[PATCH 00/27] arch: syscalls: unifiy all syscalltbl.sh into scripts/syscalltbl.sh

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37 messages, 4 authors, 2021-02-15 · open the first message on its own page

[PATCH 00/27] arch: syscalls: unifiy all syscalltbl.sh into scripts/syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:54:17 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts:

  $ find arch -name syscalltbl.sh | sort
  arch/alpha/kernel/syscalls/syscalltbl.sh
  arch/arm/tools/syscalltbl.sh
  arch/ia64/kernel/syscalls/syscalltbl.sh
  arch/m68k/kernel/syscalls/syscalltbl.sh
  arch/microblaze/kernel/syscalls/syscalltbl.sh
  arch/mips/kernel/syscalls/syscalltbl.sh
  arch/parisc/kernel/syscalls/syscalltbl.sh
  arch/powerpc/kernel/syscalls/syscalltbl.sh
  arch/sh/kernel/syscalls/syscalltbl.sh
  arch/sparc/kernel/syscalls/syscalltbl.sh
  arch/x86/entry/syscalls/syscalltbl.sh
  arch/xtensa/kernel/syscalls/syscalltbl.sh

This patch set unifies all of them into a single file,
scripts/syscalltbl.sh.

The code-diff is attractive:

 51 files changed, 254 insertions(+), 674 deletions(-)
 delete mode 100644 arch/alpha/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/arm/tools/syscalltbl.sh
 delete mode 100644 arch/ia64/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/m68k/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/microblaze/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/mips/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/parisc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/powerpc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sh/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sparc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/x86/entry/syscalls/syscalltbl.sh
 delete mode 100644 arch/xtensa/kernel/syscalls/syscalltbl.sh
 create mode 100644 scripts/syscalltbl.sh

Also, this includes Makefile fixes, and some x86 fixes and cleanups.

My question is, how to merge this series.

I am touching all architectures, but the first patch is a prerequisite
of the rest of this series.

One possibility is to ask the x86 maintainers to pickup the first 5
patches for v5.12-rc1, and then send the rest for v5.13-rc1,
splitting per-arch.

I want the x86 maintainers to check the first 5 patches because
I cleaned up the x32 code.

I know x32 was considered for deprecation, but my motivation is to
clean-up scripts across the tree without changing the functionality.



Masahiro Yamada (27):
  scripts: add generic syscalltbl.sh
  x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL()
  x86/build: add missing FORCE and fix 'targets' to make if_changed work
  x86/entry/x32: rename __x32_compat_sys_* to __x64_compat_sys_*
  x86/syscalls: switch to generic syscalltbl.sh
  ARM: syscalls: switch to generic syscalltbl.sh
  alpha: add missing FORCE and fix 'targets' to make if_changed work
  alpha: syscalls: switch to generic syscalltbl.sh
  ia64: add missing FORCE and fix 'targets' to make if_changed work
  ia64: syscalls: switch to generic syscalltbl.sh
  m68k: add missing FORCE and fix 'targets' to make if_changed work
  m68k: syscalls: switch to generic syscalltbl.sh
  microblaze: add missing FORCE and fix 'targets' to make if_changed
    work
  microblaze: syscalls: switch to generic syscalltbl.sh
  mips: add missing FORCE and fix 'targets' to make if_changed work
  mips: syscalls: switch to generic syscalltbl.sh
  parisc: add missing FORCE and fix 'targets' to make if_changed work
  parisc: syscalls: switch to generic syscalltbl.sh
  sh: add missing FORCE and fix 'targets' to make if_changed work
  sh: syscalls: switch to generic syscalltbl.sh
  sparc: remove wrong comment from arch/sparc/include/asm/Kbuild
  sparc: add missing FORCE and fix 'targets' to make if_changed work
  sparc: syscalls: switch to generic syscalltbl.sh
  powerpc: add missing FORCE and fix 'targets' to make if_changed work
  powerpc: syscalls: switch to generic syscalltbl.sh
  xtensa: add missing FORCE and fix 'targets' to make if_changed work
  xtensa: syscalls: switch to generic syscalltbl.sh

 arch/alpha/kernel/syscalls/Makefile           | 18 +++----
 arch/alpha/kernel/syscalls/syscalltbl.sh      | 32 -----------
 arch/alpha/kernel/systbls.S                   |  3 +-
 arch/arm/kernel/entry-common.S                |  8 +--
 arch/arm/tools/Makefile                       |  9 ++--
 arch/arm/tools/syscalltbl.sh                  | 22 --------
 arch/ia64/kernel/entry.S                      |  3 +-
 arch/ia64/kernel/syscalls/Makefile            | 19 +++----
 arch/ia64/kernel/syscalls/syscalltbl.sh       | 32 -----------
 arch/m68k/kernel/syscalls/Makefile            | 18 +++----
 arch/m68k/kernel/syscalls/syscalltbl.sh       | 32 -----------
 arch/m68k/kernel/syscalltable.S               |  3 +-
 arch/microblaze/kernel/syscall_table.S        |  3 +-
 arch/microblaze/kernel/syscalls/Makefile      | 18 +++----
 arch/microblaze/kernel/syscalls/syscalltbl.sh | 32 -----------
 arch/mips/include/asm/Kbuild                  |  7 ++-
 arch/mips/kernel/scall32-o32.S                |  4 +-
 arch/mips/kernel/scall64-n32.S                |  3 +-
 arch/mips/kernel/scall64-n64.S                |  3 +-
 arch/mips/kernel/scall64-o32.S                |  4 +-
 arch/mips/kernel/syscalls/Makefile            | 53 ++++++++-----------
 arch/mips/kernel/syscalls/syscalltbl.sh       | 36 -------------
 arch/parisc/include/asm/Kbuild                |  1 -
 arch/parisc/kernel/syscall.S                  | 16 +++---
 arch/parisc/kernel/syscalls/Makefile          | 34 +++++-------
 arch/parisc/kernel/syscalls/syscalltbl.sh     | 36 -------------
 arch/powerpc/include/asm/Kbuild               |  1 -
 arch/powerpc/kernel/syscalls/Makefile         | 39 +++++---------
 arch/powerpc/kernel/syscalls/syscalltbl.sh    | 36 -------------
 arch/powerpc/kernel/systbl.S                  |  5 +-
 arch/powerpc/platforms/cell/spu_callbacks.c   |  2 +-
 arch/sh/kernel/syscalls/Makefile              | 18 +++----
 arch/sh/kernel/syscalls/syscalltbl.sh         | 32 -----------
 arch/sparc/include/asm/Kbuild                 |  3 --
 arch/sparc/kernel/syscalls/Makefile           | 34 +++++-------
 arch/sparc/kernel/syscalls/syscalltbl.sh      | 36 -------------
 arch/sparc/kernel/systbls_32.S                |  4 +-
 arch/sparc/kernel/systbls_64.S                |  8 +--
 arch/x86/entry/syscall_32.c                   | 12 +++--
 arch/x86/entry/syscall_64.c                   |  9 ++--
 arch/x86/entry/syscall_x32.c                  | 27 ++--------
 arch/x86/entry/syscalls/Makefile              | 33 +++++++-----
 arch/x86/entry/syscalls/syscalltbl.sh         | 46 ----------------
 arch/x86/include/asm/Kbuild                   |  1 +
 arch/x86/include/asm/syscall_wrapper.h        | 11 ++--
 arch/x86/um/sys_call_table_32.c               |  8 +--
 arch/x86/um/sys_call_table_64.c               |  9 ++--
 arch/xtensa/kernel/syscall.c                  |  3 +-
 arch/xtensa/kernel/syscalls/Makefile          | 18 +++----
 arch/xtensa/kernel/syscalls/syscalltbl.sh     | 32 -----------
 scripts/syscalltbl.sh                         | 52 ++++++++++++++++++
 51 files changed, 254 insertions(+), 674 deletions(-)
 delete mode 100644 arch/alpha/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/arm/tools/syscalltbl.sh
 delete mode 100644 arch/ia64/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/m68k/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/microblaze/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/mips/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/parisc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/powerpc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sh/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sparc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/x86/entry/syscalls/syscalltbl.sh
 delete mode 100644 arch/xtensa/kernel/syscalls/syscalltbl.sh
 create mode 100644 scripts/syscalltbl.sh

-- 
2.27.0

[PATCH 04/27] x86/entry/x32: rename __x32_compat_sys_* to __x64_compat_sys_*

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:54:54 

In arch/x86/entry/syscall_x32.c, the macros are mapped to symbols
as follows:

  __SYSCALL_COMMON(nr, sym)  -->  __x64_<sym>
  __SYSCALL_X32(nr, sym)     -->  __x32_<sym>

Originally, the syscalls in the x32 special range (512-547) were all
compat.

This assumption is now broken after the following commits:

  55db9c0e8534 ("net: remove compat_sys_{get,set}sockopt")
  5f764d624a89 ("fs: remove the compat readv/writev syscalls")
  598b3cec831f ("fs: remove compat_sys_vmsplice")
  c3973b401ef2 ("mm: remove compat_process_vm_{readv,writev}")

Those commits redefined __x32_sys_* to __x64_sys_* because there is
no stub like __x32_sys_*.

I think defining as follows is sensible and cleaner.

  __SYSCALL_COMMON(nr, sym)  -->  __x64_<sym>
  __SYSCALL_X32(nr, sym)     -->  __x64_<sym>

The ugly #define __x32_sys_* will go away.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/x86/entry/syscall_x32.c           | 16 ++--------------
 arch/x86/include/asm/syscall_wrapper.h | 10 +++++-----
 2 files changed, 7 insertions(+), 19 deletions(-)

diff --git a/arch/x86/entry/syscall_x32.c b/arch/x86/entry/syscall_x32.c
index f2fe0a33bcfd..3fea8fb9cd6a 100644
--- a/arch/x86/entry/syscall_x32.c
+++ b/arch/x86/entry/syscall_x32.c
@@ -8,27 +8,15 @@
 #include <asm/unistd.h>
 #include <asm/syscall.h>
 
-/*
- * Reuse the 64-bit entry points for the x32 versions that occupy different
- * slots in the syscall table.
- */
-#define __x32_sys_readv		__x64_sys_readv
-#define __x32_sys_writev	__x64_sys_writev
-#define __x32_sys_getsockopt	__x64_sys_getsockopt
-#define __x32_sys_setsockopt	__x64_sys_setsockopt
-#define __x32_sys_vmsplice	__x64_sys_vmsplice
-#define __x32_sys_process_vm_readv	__x64_sys_process_vm_readv
-#define __x32_sys_process_vm_writev	__x64_sys_process_vm_writev
-
 #define __SYSCALL_64(nr, sym)
 
-#define __SYSCALL_X32(nr, sym) extern long __x32_##sym(const struct pt_regs *);
+#define __SYSCALL_X32(nr, sym) extern long __x64_##sym(const struct pt_regs *);
 #define __SYSCALL_COMMON(nr, sym) extern long __x64_##sym(const struct pt_regs *);
 #include <asm/syscalls_64.h>
 #undef __SYSCALL_X32
 #undef __SYSCALL_COMMON
 
-#define __SYSCALL_X32(nr, sym) [nr] = __x32_##sym,
+#define __SYSCALL_X32(nr, sym) [nr] = __x64_##sym,
 #define __SYSCALL_COMMON(nr, sym) [nr] = __x64_##sym,
 
 asmlinkage const sys_call_ptr_t x32_sys_call_table[__NR_x32_syscall_max+1] = {
diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h
index 80c08c7d5e72..6a2827d0681f 100644
--- a/arch/x86/include/asm/syscall_wrapper.h
+++ b/arch/x86/include/asm/syscall_wrapper.h
@@ -17,7 +17,7 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs *regs);
  * __x64_sys_*()         - 64-bit native syscall
  * __ia32_sys_*()        - 32-bit native syscall or common compat syscall
  * __ia32_compat_sys_*() - 32-bit compat syscall
- * __x32_compat_sys_*()  - 64-bit X32 compat syscall
+ * __x64_compat_sys_*()  - 64-bit X32 compat syscall
  *
  * The registers are decoded according to the ABI:
  * 64-bit: RDI, RSI, RDX, R10, R8, R9
@@ -166,17 +166,17 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs *regs);
  * with x86_64 obviously do not need such care.
  */
 #define __X32_COMPAT_SYS_STUB0(name)					\
-	__SYS_STUB0(x32, compat_sys_##name)
+	__SYS_STUB0(x64, compat_sys_##name)
 
 #define __X32_COMPAT_SYS_STUBx(x, name, ...)				\
-	__SYS_STUBx(x32, compat_sys##name,				\
+	__SYS_STUBx(x64, compat_sys##name,				\
 		    SC_X86_64_REGS_TO_ARGS(x, __VA_ARGS__))
 
 #define __X32_COMPAT_COND_SYSCALL(name)					\
-	__COND_SYSCALL(x32, compat_sys_##name)
+	__COND_SYSCALL(x64, compat_sys_##name)
 
 #define __X32_COMPAT_SYS_NI(name)					\
-	__SYS_NI(x32, compat_sys_##name)
+	__SYS_NI(x64, compat_sys_##name)
 #else /* CONFIG_X86_X32 */
 #define __X32_COMPAT_SYS_STUB0(name)
 #define __X32_COMPAT_SYS_STUBx(x, name, ...)
-- 
2.27.0

[PATCH 05/27] x86/syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:54:55 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts x86 and UML to use scripts/syscalltbl.sh.

Currently, syscall_64.h mixes up x86_64 and x32 syscalls. This commit
separates syscall_64.h and syscall_x32.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/x86/entry/syscall_32.c           | 12 +++++--
 arch/x86/entry/syscall_64.c           |  9 ++----
 arch/x86/entry/syscall_x32.c          | 15 +++------
 arch/x86/entry/syscalls/Makefile      | 10 ++++--
 arch/x86/entry/syscalls/syscalltbl.sh | 46 ---------------------------
 arch/x86/include/asm/Kbuild           |  1 +
 arch/x86/um/sys_call_table_32.c       |  8 +++--
 arch/x86/um/sys_call_table_64.c       |  9 ++----
 8 files changed, 34 insertions(+), 76 deletions(-)
 delete mode 100644 arch/x86/entry/syscalls/syscalltbl.sh

diff --git a/arch/x86/entry/syscall_32.c b/arch/x86/entry/syscall_32.c
index 86eb0d89d46f..70bf46e73b1c 100644
--- a/arch/x86/entry/syscall_32.c
+++ b/arch/x86/entry/syscall_32.c
@@ -8,12 +8,18 @@
 #include <asm/unistd.h>
 #include <asm/syscall.h>
 
-#define __SYSCALL_I386(nr, sym) extern long __ia32_##sym(const struct pt_regs *);
+#ifdef CONFIG_IA32_EMULATION
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
+#else
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
+#endif
+
+#define __SYSCALL(nr, sym) extern long __ia32_##sym(const struct pt_regs *);
 
 #include <asm/syscalls_32.h>
-#undef __SYSCALL_I386
+#undef __SYSCALL
 
-#define __SYSCALL_I386(nr, sym) [nr] = __ia32_##sym,
+#define __SYSCALL(nr, sym) [nr] = __ia32_##sym,
 
 __visible const sys_call_ptr_t ia32_sys_call_table[__NR_ia32_syscall_max+1] = {
 	/*
diff --git a/arch/x86/entry/syscall_64.c b/arch/x86/entry/syscall_64.c
index 1594ec72bcbb..82670bb10931 100644
--- a/arch/x86/entry/syscall_64.c
+++ b/arch/x86/entry/syscall_64.c
@@ -8,14 +8,11 @@
 #include <asm/unistd.h>
 #include <asm/syscall.h>
 
-#define __SYSCALL_X32(nr, sym)
-#define __SYSCALL_COMMON(nr, sym) __SYSCALL_64(nr, sym)
-
-#define __SYSCALL_64(nr, sym) extern long __x64_##sym(const struct pt_regs *);
+#define __SYSCALL(nr, sym) extern long __x64_##sym(const struct pt_regs *);
 #include <asm/syscalls_64.h>
-#undef __SYSCALL_64
+#undef __SYSCALL
 
-#define __SYSCALL_64(nr, sym) [nr] = __x64_##sym,
+#define __SYSCALL(nr, sym) [nr] = __x64_##sym,
 
 asmlinkage const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = {
 	/*
diff --git a/arch/x86/entry/syscall_x32.c b/arch/x86/entry/syscall_x32.c
index 3fea8fb9cd6a..6d2ef887d7b6 100644
--- a/arch/x86/entry/syscall_x32.c
+++ b/arch/x86/entry/syscall_x32.c
@@ -8,16 +8,11 @@
 #include <asm/unistd.h>
 #include <asm/syscall.h>
 
-#define __SYSCALL_64(nr, sym)
+#define __SYSCALL(nr, sym) extern long __x64_##sym(const struct pt_regs *);
+#include <asm/syscalls_x32.h>
+#undef __SYSCALL
 
-#define __SYSCALL_X32(nr, sym) extern long __x64_##sym(const struct pt_regs *);
-#define __SYSCALL_COMMON(nr, sym) extern long __x64_##sym(const struct pt_regs *);
-#include <asm/syscalls_64.h>
-#undef __SYSCALL_X32
-#undef __SYSCALL_COMMON
-
-#define __SYSCALL_X32(nr, sym) [nr] = __x64_##sym,
-#define __SYSCALL_COMMON(nr, sym) [nr] = __x64_##sym,
+#define __SYSCALL(nr, sym) [nr] = __x64_##sym,
 
 asmlinkage const sys_call_ptr_t x32_sys_call_table[__NR_x32_syscall_max+1] = {
 	/*
@@ -25,5 +20,5 @@ asmlinkage const sys_call_ptr_t x32_sys_call_table[__NR_x32_syscall_max+1] = {
 	 * when the & below is removed.
 	 */
 	[0 ... __NR_x32_syscall_max] = &__x64_sys_ni_syscall,
-#include <asm/syscalls_64.h>
+#include <asm/syscalls_x32.h>
 };
diff --git a/arch/x86/entry/syscalls/Makefile b/arch/x86/entry/syscalls/Makefile
index e1c7ddb7546b..4409d148af1e 100644
--- a/arch/x86/entry/syscalls/Makefile
+++ b/arch/x86/entry/syscalls/Makefile
@@ -10,7 +10,7 @@ syscall32 := $(srctree)/$(src)/syscall_32.tbl
 syscall64 := $(srctree)/$(src)/syscall_64.tbl
 
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
@@ -18,7 +18,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_pfx_$(basetarget))' \
 		   '$(syshdr_offset_$(basetarget))'
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' $< $@
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ $(abis)
 
 quiet_cmd_hypercalls = HYPERCALLS $@
       cmd_hypercalls = $(CONFIG_SHELL) '$<' $@ $(filter-out $<,$^)
@@ -46,10 +46,15 @@ syshdr_pfx_unistd_64_x32 := x32_
 $(out)/unistd_64_x32.h: $(syscall64) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
+$(out)/syscalls_32.h: abis := i386
 $(out)/syscalls_32.h: $(syscall32) $(systbl) FORCE
 	$(call if_changed,systbl)
+$(out)/syscalls_64.h: abis := common,64
 $(out)/syscalls_64.h: $(syscall64) $(systbl) FORCE
 	$(call if_changed,systbl)
+$(out)/syscalls_x32.h: abis := common,x32
+$(out)/syscalls_x32.h: $(syscall64) $(systbl) FORCE
+	$(call if_changed,systbl)
 
 $(out)/xen-hypercalls.h: $(srctree)/scripts/xen-hypercalls.sh FORCE
 	$(call if_changed,hypercalls)
@@ -60,6 +65,7 @@ uapisyshdr-y			+= unistd_32.h unistd_64.h unistd_x32.h
 syshdr-y			+= syscalls_32.h
 syshdr-$(CONFIG_X86_64)		+= unistd_32_ia32.h unistd_64_x32.h
 syshdr-$(CONFIG_X86_64)		+= syscalls_64.h
+syshdr-$(CONFIG_X86_X32)	+= syscalls_x32.h
 syshdr-$(CONFIG_XEN)		+= xen-hypercalls.h
 
 uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
diff --git a/arch/x86/entry/syscalls/syscalltbl.sh b/arch/x86/entry/syscalls/syscalltbl.sh
deleted file mode 100644
index 929bde120d6b..000000000000
--- a/arch/x86/entry/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,46 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-
-syscall_macro() {
-    local abi="$1"
-    local nr="$2"
-    local entry="$3"
-
-    echo "__SYSCALL_${abi}($nr, $entry)"
-}
-
-emit() {
-    local abi="$1"
-    local nr="$2"
-    local entry="$3"
-    local compat="$4"
-
-    if [ "$abi" != "I386" -a -n "$compat" ]; then
-	echo "a compat entry ($abi: $compat) for a 64-bit syscall makes no sense" >&2
-	exit 1
-    fi
-
-    if [ -z "$compat" ]; then
-	if [ -n "$entry" ]; then
-	    syscall_macro "$abi" "$nr" "$entry"
-	fi
-    else
-	echo "#ifdef CONFIG_X86_32"
-	if [ -n "$entry" ]; then
-	    syscall_macro "$abi" "$nr" "$entry"
-	fi
-	echo "#else"
-	syscall_macro "$abi" "$nr" "$compat"
-	echo "#endif"
-    fi
-}
-
-grep '^[0-9]' "$in" | sort -n | (
-    while read nr abi name entry compat; do
-	abi=`echo "$abi" | tr '[a-z]' '[A-Z]'`
-	emit "$abi" "$nr" "$entry" "$compat"
-    done
-) > "$out"
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index b19ec8282d50..1e51650b79d7 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -3,6 +3,7 @@
 
 generated-y += syscalls_32.h
 generated-y += syscalls_64.h
+generated-y += syscalls_x32.h
 generated-y += unistd_32_ia32.h
 generated-y += unistd_64_x32.h
 generated-y += xen-hypercalls.h
diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c
index 2ed81e581755..e83619c365dc 100644
--- a/arch/x86/um/sys_call_table_32.c
+++ b/arch/x86/um/sys_call_table_32.c
@@ -26,11 +26,13 @@
 
 #define old_mmap sys_old_mmap
 
-#define __SYSCALL_I386(nr, sym) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
+
+#define __SYSCALL(nr, sym) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
 #include <asm/syscalls_32.h>
 
-#undef __SYSCALL_I386
-#define __SYSCALL_I386(nr, sym) [ nr ] = sym,
+#undef __SYSCALL
+#define __SYSCALL(nr, sym) [ nr ] = sym,
 
 extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
 
diff --git a/arch/x86/um/sys_call_table_64.c b/arch/x86/um/sys_call_table_64.c
index 2e8544dafbb0..6fb75af7cf54 100644
--- a/arch/x86/um/sys_call_table_64.c
+++ b/arch/x86/um/sys_call_table_64.c
@@ -36,14 +36,11 @@
 #define stub_execveat sys_execveat
 #define stub_rt_sigreturn sys_rt_sigreturn
 
-#define __SYSCALL_X32(nr, sym)
-#define __SYSCALL_COMMON(nr, sym) __SYSCALL_64(nr, sym)
-
-#define __SYSCALL_64(nr, sym) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
+#define __SYSCALL(nr, sym) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
 #include <asm/syscalls_64.h>
 
-#undef __SYSCALL_64
-#define __SYSCALL_64(nr, sym) [ nr ] = sym,
+#undef __SYSCALL
+#define __SYSCALL(nr, sym) [ nr ] = sym,
 
 extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
 
-- 
2.27.0

[PATCH 07/27] alpha: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:55:29 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/alpha/kernel/syscalls/Makefile | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/alpha/kernel/syscalls/Makefile b/arch/alpha/kernel/syscalls/Makefile
index 659faefdcb1d..1c42d2d2926d 100644
--- a/arch/alpha/kernel/syscalls/Makefile
+++ b/arch/alpha/kernel/syscalls/Makefile
@@ -21,18 +21,19 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_abi_$(basetarget))'		\
 		   '$(systbl_offset_$(basetarget))'
 
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-$(kapi)/syscall_table.h: $(syscall) $(systbl)
+$(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h
 kapisyshdr-y		+= syscall_table.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 03/27] x86/build: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:56:01 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/x86/entry/syscalls/Makefile | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/arch/x86/entry/syscalls/Makefile b/arch/x86/entry/syscalls/Makefile
index 6fb9b57ed5ba..e1c7ddb7546b 100644
--- a/arch/x86/entry/syscalls/Makefile
+++ b/arch/x86/entry/syscalls/Makefile
@@ -24,34 +24,34 @@ quiet_cmd_hypercalls = HYPERCALLS $@
       cmd_hypercalls = $(CONFIG_SHELL) '$<' $@ $(filter-out $<,$^)
 
 syshdr_abi_unistd_32 := i386
-$(uapi)/unistd_32.h: $(syscall32) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall32) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_abi_unistd_32_ia32 := i386
 syshdr_pfx_unistd_32_ia32 := ia32_
-$(out)/unistd_32_ia32.h: $(syscall32) $(syshdr)
+$(out)/unistd_32_ia32.h: $(syscall32) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_abi_unistd_x32 := common,x32
 syshdr_offset_unistd_x32 := __X32_SYSCALL_BIT
-$(uapi)/unistd_x32.h: $(syscall64) $(syshdr)
+$(uapi)/unistd_x32.h: $(syscall64) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_abi_unistd_64 := common,64
-$(uapi)/unistd_64.h: $(syscall64) $(syshdr)
+$(uapi)/unistd_64.h: $(syscall64) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_abi_unistd_64_x32 := x32
 syshdr_pfx_unistd_64_x32 := x32_
-$(out)/unistd_64_x32.h: $(syscall64) $(syshdr)
+$(out)/unistd_64_x32.h: $(syscall64) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-$(out)/syscalls_32.h: $(syscall32) $(systbl)
+$(out)/syscalls_32.h: $(syscall32) $(systbl) FORCE
 	$(call if_changed,systbl)
-$(out)/syscalls_64.h: $(syscall64) $(systbl)
+$(out)/syscalls_64.h: $(syscall64) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-$(out)/xen-hypercalls.h: $(srctree)/scripts/xen-hypercalls.sh
+$(out)/xen-hypercalls.h: $(srctree)/scripts/xen-hypercalls.sh FORCE
 	$(call if_changed,hypercalls)
 
 $(out)/xen-hypercalls.h: $(srctree)/include/xen/interface/xen*.h
@@ -62,9 +62,10 @@ syshdr-$(CONFIG_X86_64)		+= unistd_32_ia32.h unistd_64_x32.h
 syshdr-$(CONFIG_X86_64)		+= syscalls_64.h
 syshdr-$(CONFIG_XEN)		+= xen-hypercalls.h
 
-targets	+= $(uapisyshdr-y) $(syshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+syshdr-y	:= $(addprefix $(out)/, $(syshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(syshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(out)/,$(syshdr-y))
+all: $(uapisyshdr-y) $(syshdr-y)
 	@:
-- 
2.27.0

[PATCH 01/27] scripts: add generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:56:01 

Most of architectures generate syscall headers at the compile time
in the almost same way.

The syscall table has the same format for all architectures. Each line
has 3, 4 or 5 fields; syscall number, ABI, syscall name, native entry
point, and compat entry point. The syscall table is processed by
syscalltbl.sh script into header files.

Despite the same pattern, scripts are maintained per architecture,
which results in code duplication and bad maintainability.

As of v5.11-rc1, 12 architectures duplicate similar shell scripts:

  $ find arch -name syscalltbl.sh | sort
  arch/alpha/kernel/syscalls/syscalltbl.sh
  arch/arm/tools/syscalltbl.sh
  arch/ia64/kernel/syscalls/syscalltbl.sh
  arch/m68k/kernel/syscalls/syscalltbl.sh
  arch/microblaze/kernel/syscalls/syscalltbl.sh
  arch/mips/kernel/syscalls/syscalltbl.sh
  arch/parisc/kernel/syscalls/syscalltbl.sh
  arch/powerpc/kernel/syscalls/syscalltbl.sh
  arch/sh/kernel/syscalls/syscalltbl.sh
  arch/sparc/kernel/syscalls/syscalltbl.sh
  arch/x86/entry/syscalls/syscalltbl.sh
  arch/xtensa/kernel/syscalls/syscalltbl.sh

My goal is to unify them into a single file, scripts/syscalltbl.sh.

For example, the i386 syscall table looks like this:

  0  i386  restart_syscall  sys_restart_syscall
  1  i386  exit             sys_exit
  2  i386  fork             sys_fork
  3  i386  read             sys_read
  4  i386  write            sys_write
  5  i386  open             sys_open              compat_sys_open
  ...

scripts/syscalltbl.sh generates the following code:

  __SYSCALL(0, sys_restart_syscall)
  __SYSCALL(1, sys_exit)
  __SYSCALL(2, sys_fork)
  __SYSCALL(3, sys_read)
  __SYSCALL(4, sys_write)
  __SYSCALL_WITH_COMPAT(5, sys_open, compat_sys_open)
  ...

Then, the i386 kernel will do:

  #define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)

and the x86_64 kernel will do:

  #define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, compat)

I noticed all 32/64 bit architectures can be covered by the same
pattern. Having an arch-specific script is fine if there is a good
reason to do so, but a single generic script should work for this case.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 scripts/syscalltbl.sh | 52 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 scripts/syscalltbl.sh

diff --git a/scripts/syscalltbl.sh b/scripts/syscalltbl.sh
new file mode 100644
index 000000000000..15bf4e09f88c
--- /dev/null
+++ b/scripts/syscalltbl.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Usage:
+#  scripts/syscalltbl.sh INFILE OUTFILE [ABIS] [OFFSET]
+#
+# INFILE: input syscall table
+# OUTFILE: output file
+# ABIS (optional): specify the ABIs to handle.
+#                  If omitted, all lines are handled.
+# OFFSET (optinal): spefify the offset of the syscall numbers.
+#                   If omitted, the offset is zero.
+#
+# The syscall table format:
+# nr abi name native [compat]
+#
+# nr: syscall number
+# abi: ABI name
+# name: syscall name
+# native: native entry point
+# compat (optional): compat entry point
+
+set -e
+
+in="$1"
+out="$2"
+abis=$(echo "($3)" | tr ',' '|')
+offset="${4:-0}"
+
+nxt=$offset
+
+grep -E "^[0-9]+[[:space:]]+${abis}" "$in" | sort -n | {
+
+	while read nr abi name native compat ; do
+
+		nr=$((nr + $offset))
+
+		while [ $nxt -lt $nr ]; do
+			echo "__SYSCALL($nxt, sys_ni_syscall)"
+			nxt=$((nxt + 1))
+		done
+
+		if [ -n "$compat" ]; then
+			echo "__SYSCALL_WITH_COMPAT($nr, $native, $compat)"
+		elif [ -n "$native" ]; then
+			echo "__SYSCALL($nr, $native)"
+		else
+			echo "__SYSCALL($nr, sys_ni_syscall)"
+		fi
+		nxt=$((nr + 1))
+	done
+} > "$out"
-- 
2.27.0

Re: [PATCH 01/27] scripts: add generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:09:46 

On Thu, Jan 28, 2021 at 9:51 AM Masahiro Yamada [off-list ref] wrote:
quoted hunk
Most of architectures generate syscall headers at the compile time
in the almost same way.

The syscall table has the same format for all architectures. Each line
has 3, 4 or 5 fields; syscall number, ABI, syscall name, native entry
point, and compat entry point. The syscall table is processed by
syscalltbl.sh script into header files.

Despite the same pattern, scripts are maintained per architecture,
which results in code duplication and bad maintainability.

As of v5.11-rc1, 12 architectures duplicate similar shell scripts:

  $ find arch -name syscalltbl.sh | sort
  arch/alpha/kernel/syscalls/syscalltbl.sh
  arch/arm/tools/syscalltbl.sh
  arch/ia64/kernel/syscalls/syscalltbl.sh
  arch/m68k/kernel/syscalls/syscalltbl.sh
  arch/microblaze/kernel/syscalls/syscalltbl.sh
  arch/mips/kernel/syscalls/syscalltbl.sh
  arch/parisc/kernel/syscalls/syscalltbl.sh
  arch/powerpc/kernel/syscalls/syscalltbl.sh
  arch/sh/kernel/syscalls/syscalltbl.sh
  arch/sparc/kernel/syscalls/syscalltbl.sh
  arch/x86/entry/syscalls/syscalltbl.sh
  arch/xtensa/kernel/syscalls/syscalltbl.sh

My goal is to unify them into a single file, scripts/syscalltbl.sh.

For example, the i386 syscall table looks like this:

  0  i386  restart_syscall  sys_restart_syscall
  1  i386  exit             sys_exit
  2  i386  fork             sys_fork
  3  i386  read             sys_read
  4  i386  write            sys_write
  5  i386  open             sys_open              compat_sys_open
  ...

scripts/syscalltbl.sh generates the following code:

  __SYSCALL(0, sys_restart_syscall)
  __SYSCALL(1, sys_exit)
  __SYSCALL(2, sys_fork)
  __SYSCALL(3, sys_read)
  __SYSCALL(4, sys_write)
  __SYSCALL_WITH_COMPAT(5, sys_open, compat_sys_open)
  ...

Then, the i386 kernel will do:

  #define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)

and the x86_64 kernel will do:

  #define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, compat)

I noticed all 32/64 bit architectures can be covered by the same
pattern. Having an arch-specific script is fine if there is a good
reason to do so, but a single generic script should work for this case.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 scripts/syscalltbl.sh | 52 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 scripts/syscalltbl.sh

diff --git a/scripts/syscalltbl.sh b/scripts/syscalltbl.sh
new file mode 100644
index 000000000000..15bf4e09f88c
--- /dev/null
+++ b/scripts/syscalltbl.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Usage:
+#  scripts/syscalltbl.sh INFILE OUTFILE [ABIS] [OFFSET]
+#
+# INFILE: input syscall table
+# OUTFILE: output file
+# ABIS (optional): specify the ABIs to handle.
+#                  If omitted, all lines are handled.
+# OFFSET (optinal): spefify the offset of the syscall numbers.
+#                   If omitted, the offset is zero.
+#
+# The syscall table format:
+# nr abi name native [compat]

This line should be

 nr abi name [native] [compat]


because the native entry point is also optional.
(if it is missing, sys_ni_syscall is used)




+#
+# nr: syscall number
+# abi: ABI name
+# name: syscall name
+# native: native entry point
native (optional): native entry point


+# compat (optional): compat entry point
+
+set -e
+
+in="$1"
+out="$2"
+abis=$(echo "($3)" | tr ',' '|')
+offset="${4:-0}"
+
+nxt=$offset
+
+grep -E "^[0-9]+[[:space:]]+${abis}" "$in" | sort -n | {
+
+       while read nr abi name native compat ; do
+
+               nr=$((nr + $offset))
+
+               while [ $nxt -lt $nr ]; do
+                       echo "__SYSCALL($nxt, sys_ni_syscall)"
+                       nxt=$((nxt + 1))
+               done
+
+               if [ -n "$compat" ]; then
+                       echo "__SYSCALL_WITH_COMPAT($nr, $native, $compat)"
+               elif [ -n "$native" ]; then
+                       echo "__SYSCALL($nr, $native)"
+               else
+                       echo "__SYSCALL($nr, sys_ni_syscall)"
+               fi
+               nxt=$((nr + 1))
+       done
+} > "$out"
--
2.27.0

-- 
Best Regards
Masahiro Yamada

[PATCH 02/27] x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL()

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:56:29 

Building kernel/sys_ni.c with W=1 omits tons of -Wmissing-prototypes
warnings.

$ make W=1 kernel/sys_ni.o
  [ snip ]
  CC      kernel/sys_ni.o
In file included from kernel/sys_ni.c:10:
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_io_setup' [-Wmissing-prototypes]
   83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
      |              ^~
./arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
  100 |  __COND_SYSCALL(x64, sys_##name)
      |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
  256 |  __X64_COND_SYSCALL(name)     \
      |  ^~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
   39 | COND_SYSCALL(io_setup);
      | ^~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_io_setup' [-Wmissing-prototypes]
   83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
      |              ^~
./arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
  120 |  __COND_SYSCALL(ia32, sys_##name)
      |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
  257 |  __IA32_COND_SYSCALL(name)
      |  ^~~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
   39 | COND_SYSCALL(io_setup);
      | ^~~~~~~~~~~~
  ...

__SYS_STUB0() and __SYS_STUBx() defined a few lines above have forward
declarations. Let's do likewise for __COND_SYSCALL() to fix the
warnings.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/x86/include/asm/syscall_wrapper.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h
index a84333adeef2..80c08c7d5e72 100644
--- a/arch/x86/include/asm/syscall_wrapper.h
+++ b/arch/x86/include/asm/syscall_wrapper.h
@@ -80,6 +80,7 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs *regs);
 	}
 
 #define __COND_SYSCALL(abi, name)					\
+	__weak long __##abi##_##name(const struct pt_regs *__unused);	\
 	__weak long __##abi##_##name(const struct pt_regs *__unused)	\
 	{								\
 		return sys_ni_syscall();				\
-- 
2.27.0

Re: [PATCH 02/27] x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL()

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:03:04 

On Thu, Jan 28, 2021 at 9:52 AM Masahiro Yamada [off-list ref] wrote:
Building kernel/sys_ni.c with W=1 omits tons of -Wmissing-prototypes

This is a typo.  "omits" -> "emits"
quoted hunk
warnings.

$ make W=1 kernel/sys_ni.o
  [ snip ]
  CC      kernel/sys_ni.o
In file included from kernel/sys_ni.c:10:
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_io_setup' [-Wmissing-prototypes]
   83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
      |              ^~
./arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
  100 |  __COND_SYSCALL(x64, sys_##name)
      |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
  256 |  __X64_COND_SYSCALL(name)     \
      |  ^~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
   39 | COND_SYSCALL(io_setup);
      | ^~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_io_setup' [-Wmissing-prototypes]
   83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
      |              ^~
./arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
  120 |  __COND_SYSCALL(ia32, sys_##name)
      |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
  257 |  __IA32_COND_SYSCALL(name)
      |  ^~~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
   39 | COND_SYSCALL(io_setup);
      | ^~~~~~~~~~~~
  ...

__SYS_STUB0() and __SYS_STUBx() defined a few lines above have forward
declarations. Let's do likewise for __COND_SYSCALL() to fix the
warnings.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/x86/include/asm/syscall_wrapper.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h
index a84333adeef2..80c08c7d5e72 100644
--- a/arch/x86/include/asm/syscall_wrapper.h
+++ b/arch/x86/include/asm/syscall_wrapper.h
@@ -80,6 +80,7 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs *regs);
        }

 #define __COND_SYSCALL(abi, name)                                      \
+       __weak long __##abi##_##name(const struct pt_regs *__unused);   \
        __weak long __##abi##_##name(const struct pt_regs *__unused)    \
        {                                                               \
                return sys_ni_syscall();                                \
--
2.27.0

-- 
Best Regards
Masahiro Yamada

Re: [PATCH 02/27] x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL()

From: Sergei Shtylyov <hidden>
Date: 2021-01-28 08:04:27 

Hello!

On 28.01.2021 3:50, Masahiro Yamada wrote:

Building kernel/sys_ni.c with W=1 omits tons of -Wmissing-prototypes
    Emits?
quoted hunk
warnings.

$ make W=1 kernel/sys_ni.o
   [ snip ]
   CC      kernel/sys_ni.o
In file included from kernel/sys_ni.c:10:
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_io_setup' [-Wmissing-prototypes]
    83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
       |              ^~
./arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
   100 |  __COND_SYSCALL(x64, sys_##name)
       |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
   256 |  __X64_COND_SYSCALL(name)     \
       |  ^~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
    39 | COND_SYSCALL(io_setup);
       | ^~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_io_setup' [-Wmissing-prototypes]
    83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
       |              ^~
./arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
   120 |  __COND_SYSCALL(ia32, sys_##name)
       |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
   257 |  __IA32_COND_SYSCALL(name)
       |  ^~~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
    39 | COND_SYSCALL(io_setup);
       | ^~~~~~~~~~~~
   ...

__SYS_STUB0() and __SYS_STUBx() defined a few lines above have forward
declarations. Let's do likewise for __COND_SYSCALL() to fix the
warnings.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

  arch/x86/include/asm/syscall_wrapper.h | 1 +
  1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h
index a84333adeef2..80c08c7d5e72 100644
--- a/arch/x86/include/asm/syscall_wrapper.h
+++ b/arch/x86/include/asm/syscall_wrapper.h
@@ -80,6 +80,7 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs *regs);
  	}
  
  #define __COND_SYSCALL(abi, name)					\
+	__weak long __##abi##_##name(const struct pt_regs *__unused);	\
  	__weak long __##abi##_##name(const struct pt_regs *__unused)	\
    Aren't these two lines identical?

[...]

MBR, Sergei

Re: [PATCH 02/27] x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL()

From: Sergei Shtylyov <hidden>
Date: 2021-01-28 08:05:34 

On 28.01.2021 10:59, Sergei Shtylyov wrote:

[...]
quoted
Building kernel/sys_ni.c with W=1 omits tons of -Wmissing-prototypes
    Emits?
quoted
warnings.

$ make W=1 kernel/sys_ni.o
   [ snip ]
   CC      kernel/sys_ni.o
In file included from kernel/sys_ni.c:10:
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous 
prototype for '__x64_sys_io_setup' [-Wmissing-prototypes]
    83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
       |              ^~
./arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro 
'__COND_SYSCALL'
   100 |  __COND_SYSCALL(x64, sys_##name)
       |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro 
'__X64_COND_SYSCALL'
   256 |  __X64_COND_SYSCALL(name)     \
       |  ^~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
    39 | COND_SYSCALL(io_setup);
       | ^~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous 
prototype for '__ia32_sys_io_setup' [-Wmissing-prototypes]
    83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
       |              ^~
./arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro 
'__COND_SYSCALL'
   120 |  __COND_SYSCALL(ia32, sys_##name)
       |  ^~~~~~~~~~~~~~
./arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro 
'__IA32_COND_SYSCALL'
   257 |  __IA32_COND_SYSCALL(name)
       |  ^~~~~~~~~~~~~~~~~~~
kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL'
    39 | COND_SYSCALL(io_setup);
       | ^~~~~~~~~~~~
   ...

__SYS_STUB0() and __SYS_STUBx() defined a few lines above have forward
declarations. Let's do likewise for __COND_SYSCALL() to fix the
warnings.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

  arch/x86/include/asm/syscall_wrapper.h | 1 +
  1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/syscall_wrapper.h 
b/arch/x86/include/asm/syscall_wrapper.h
index a84333adeef2..80c08c7d5e72 100644
--- a/arch/x86/include/asm/syscall_wrapper.h
+++ b/arch/x86/include/asm/syscall_wrapper.h
@@ -80,6 +80,7 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs 
*regs);
      }
  #define __COND_SYSCALL(abi, name)                    \
+    __weak long __##abi##_##name(const struct pt_regs *__unused);    \
      __weak long __##abi##_##name(const struct pt_regs *__unused)    \
    Aren't these two lines identical?
     Ah, got it! :-)

[...]

MBR, Sergei

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH 06/27] ARM: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:56:31 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts ARM to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/arm/kernel/entry-common.S |  8 ++++----
 arch/arm/tools/Makefile        |  9 ++++-----
 arch/arm/tools/syscalltbl.sh   | 22 ----------------------
 3 files changed, 8 insertions(+), 31 deletions(-)
 delete mode 100644 arch/arm/tools/syscalltbl.sh

diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index e0d7833a1827..7f0b7aba1498 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -344,20 +344,19 @@ ENTRY(\sym)
 	.size	\sym, . - \sym
 	.endm
 
-#define NATIVE(nr, func) syscall nr, func
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
+#define __SYSCALL(nr, func) syscall nr, func
 
 /*
  * This is the syscall table declaration for native ABI syscalls.
  * With EABI a couple syscalls are obsolete and defined as sys_ni_syscall.
  */
 	syscall_table_start sys_call_table
-#define COMPAT(nr, native, compat) syscall nr, native
 #ifdef CONFIG_AEABI
 #include <calls-eabi.S>
 #else
 #include <calls-oabi.S>
 #endif
-#undef COMPAT
 	syscall_table_end sys_call_table
 
 /*============================================================================
@@ -455,7 +454,8 @@ ENDPROC(sys_oabi_readahead)
  * using the compatibility syscall entries.
  */
 	syscall_table_start sys_oabi_call_table
-#define COMPAT(nr, native, compat) syscall nr, compat
+#undef __SYSCALL_WITH_COMPAT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
 #include <calls-oabi.S>
 	syscall_table_end sys_oabi_call_table
 
diff --git a/arch/arm/tools/Makefile b/arch/arm/tools/Makefile
index 27d8beb7c941..c331cfe92b3c 100644
--- a/arch/arm/tools/Makefile
+++ b/arch/arm/tools/Makefile
@@ -10,7 +10,7 @@ kapi := $(gen)/asm
 uapi := $(gen)/uapi/asm
 syshdr := $(srctree)/$(src)/syscallhdr.sh
 sysnr := $(srctree)/$(src)/syscallnr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 syscall := $(srctree)/$(src)/syscall.tbl
 
 gen-y := $(gen)/calls-oabi.S
@@ -47,8 +47,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '__NR_SYSCALL_BASE'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
-		   '$(systbl_abi_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ $(abis)
 
 quiet_cmd_sysnr  = SYSNR   $@
       cmd_sysnr  = $(CONFIG_SHELL) '$(sysnr)' '$<' '$@' \
@@ -70,10 +69,10 @@ sysnr_abi_unistd-nr := common,oabi,eabi,compat
 $(kapi)/unistd-nr.h: $(syscall) $(sysnr) FORCE
 	$(call if_changed,sysnr)
 
-systbl_abi_calls-oabi := common,oabi
+$(gen)/calls-oabi.S: abis := common,oabi
 $(gen)/calls-oabi.S: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abi_calls-eabi := common,eabi
+$(gen)/calls-eabi.S: abis := common,eabi
 $(gen)/calls-eabi.S: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
diff --git a/arch/arm/tools/syscalltbl.sh b/arch/arm/tools/syscalltbl.sh
deleted file mode 100644
index ae7e93cfbfd3..000000000000
--- a/arch/arm/tools/syscalltbl.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-    while read nr abi name entry compat; do
-        if [ "$abi" = "eabi" -a -n "$compat" ]; then
-            echo "$in: error: a compat entry for an EABI syscall ($name) makes no sense" >&2
-            exit 1
-        fi
-
-	if [ -n "$entry" ]; then
-            if [ -z "$compat" ]; then
-                echo "NATIVE($nr, $entry)"
-            else
-                echo "COMPAT($nr, $entry, $compat)"
-            fi
-        fi
-    done
-) > "$out"
-- 
2.27.0

[PATCH 09/27] ia64: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:57:34 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/ia64/kernel/syscalls/Makefile | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/ia64/kernel/syscalls/Makefile b/arch/ia64/kernel/syscalls/Makefile
index 813a58cba39c..b9bfd186295f 100644
--- a/arch/ia64/kernel/syscalls/Makefile
+++ b/arch/ia64/kernel/syscalls/Makefile
@@ -22,19 +22,20 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_offset_$(basetarget))'
 
 syshdr_offset_unistd_64 := __NR_Linux
-$(uapi)/unistd_64.h: $(syscall) $(syshdr)
+$(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 systbl_offset_syscall_table := 1024
-$(kapi)/syscall_table.h: $(syscall) $(systbl)
+$(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_64.h
 kapisyshdr-y		+= syscall_table.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 23/27] sparc: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:57:34 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts sparc to use scripts/syscalltbl.sh. This also
unifies syscall_table_64.h and syscall_table_c32.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/sparc/include/asm/Kbuild            |  1 -
 arch/sparc/kernel/syscalls/Makefile      | 19 ++++---------
 arch/sparc/kernel/syscalls/syscalltbl.sh | 36 ------------------------
 arch/sparc/kernel/systbls_32.S           |  4 +--
 arch/sparc/kernel/systbls_64.S           |  8 ++++--
 5 files changed, 12 insertions(+), 56 deletions(-)
 delete mode 100644 arch/sparc/kernel/syscalls/syscalltbl.sh

diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
index aec20406145e..0b9d98ced34a 100644
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 generated-y += syscall_table_32.h
 generated-y += syscall_table_64.h
-generated-y += syscall_table_c32.h
 generic-y += export.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
diff --git a/arch/sparc/kernel/syscalls/Makefile b/arch/sparc/kernel/syscalls/Makefile
index 556fe30a6c8f..77fea5beb9be 100644
--- a/arch/sparc/kernel/syscalls/Makefile
+++ b/arch/sparc/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ $(abis)
 
 syshdr_abis_unistd_32 := common,32
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
@@ -29,23 +26,17 @@ syshdr_abis_unistd_64 := common,64
 $(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-systbl_abis_syscall_table_32 := common,32
+$(kapi)/syscall_table_32.h: abis := common,32
 $(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abis_syscall_table_64 := common,64
+$(kapi)/syscall_table_64.h: abis := common,64
 $(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abis_syscall_table_c32 := common,32
-systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
-	$(call if_changed,systbl)
-
 uapisyshdr-y		+= unistd_32.h unistd_64.h
 kapisyshdr-y		+= syscall_table_32.h		\
-			   syscall_table_64.h		\
-			   syscall_table_c32.h
+			   syscall_table_64.h
 
 uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
 kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
diff --git a/arch/sparc/kernel/syscalls/syscalltbl.sh b/arch/sparc/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 77cf0143ba19..000000000000
--- a/arch/sparc/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_nis_syscall, )\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry compat ; do
-		if [ "$my_abi" = "c32" ] && [ ! -z "$compat" ]; then
-			emit $((nxt+offset)) $((nr+offset)) $compat
-		else
-			emit $((nxt+offset)) $((nr+offset)) $entry
-		fi
-		nxt=$((nr+1))
-	done
-) > "$out"
diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
index ab9e4d57685a..3aaffa017706 100644
--- a/arch/sparc/kernel/systbls_32.S
+++ b/arch/sparc/kernel/systbls_32.S
@@ -9,10 +9,10 @@
  * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
  */
 
-#define __SYSCALL(nr, entry, nargs) .long entry
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
+#define __SYSCALL(nr, entry) .long entry
 	.data
 	.align 4
 	.globl sys_call_table
 sys_call_table:
 #include <asm/syscall_table_32.h>	/* 32-bit native syscalls */
-#undef __SYSCALL
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
index a27394bf7d7f..398fe449dd34 100644
--- a/arch/sparc/kernel/systbls_64.S
+++ b/arch/sparc/kernel/systbls_64.S
@@ -10,18 +10,20 @@
  * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
  */
 
-#define __SYSCALL(nr, entry, nargs) .word entry
+#define __SYSCALL(nr, entry) .word entry
 	.text
 	.align	4
 #ifdef CONFIG_COMPAT
 	.globl sys_call_table32
 sys_call_table32:
-#include <asm/syscall_table_c32.h>	/* Compat syscalls */
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
+#include <asm/syscall_table_32.h>	/* Compat syscalls */
+#undef __SYSCALL_WITH_COMPAT
 #endif /* CONFIG_COMPAT */
 
 	.align	4
 	.globl sys_call_table64, sys_call_table
 sys_call_table64:
 sys_call_table:
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
 #include <asm/syscall_table_64.h>	/* 64-bit native syscalls */
-#undef __SYSCALL
-- 
2.27.0

[PATCH 10/27] ia64: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:57:55 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts ia64 to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/ia64/kernel/entry.S                |  3 +--
 arch/ia64/kernel/syscalls/Makefile      |  8 ++-----
 arch/ia64/kernel/syscalls/syscalltbl.sh | 32 -------------------------
 3 files changed, 3 insertions(+), 40 deletions(-)
 delete mode 100644 arch/ia64/kernel/syscalls/syscalltbl.sh

diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index e98e3dafffd8..5eba3fb2e311 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1420,10 +1420,9 @@ END(ftrace_stub)
 
 #endif /* CONFIG_FUNCTION_TRACER */
 
-#define __SYSCALL(nr, entry, nargs) data8 entry
+#define __SYSCALL(nr, entry) data8 entry
 	.rodata
 	.align 8
 	.globl sys_call_table
 sys_call_table:
 #include <asm/syscall_table.h>
-#undef __SYSCALL
diff --git a/arch/ia64/kernel/syscalls/Makefile b/arch/ia64/kernel/syscalls/Makefile
index b9bfd186295f..3f7e0bfae7e3 100644
--- a/arch/ia64/kernel/syscalls/Makefile
+++ b/arch/ia64/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,16 +16,12 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ "" 1024
 
 syshdr_offset_unistd_64 := __NR_Linux
 $(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-systbl_offset_syscall_table := 1024
 $(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
diff --git a/arch/ia64/kernel/syscalls/syscalltbl.sh b/arch/ia64/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 85d78d9309ad..000000000000
--- a/arch/ia64/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry ; do
-		emit $((nxt+offset)) $((nr+offset)) $entry
-		nxt=$((nr+1))
-	done
-) > "$out"
-- 
2.27.0

[PATCH 27/27] xtensa: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:58:19 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts xtensa to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/xtensa/kernel/syscall.c              |  3 +--
 arch/xtensa/kernel/syscalls/Makefile      |  7 ++---
 arch/xtensa/kernel/syscalls/syscalltbl.sh | 32 -----------------------
 3 files changed, 3 insertions(+), 39 deletions(-)
 delete mode 100644 arch/xtensa/kernel/syscalls/syscalltbl.sh

diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c
index 2c415fce6801..a453d17f0da8 100644
--- a/arch/xtensa/kernel/syscall.c
+++ b/arch/xtensa/kernel/syscall.c
@@ -31,9 +31,8 @@
 syscall_t sys_call_table[__NR_syscalls] /* FIXME __cacheline_aligned */= {
 	[0 ... __NR_syscalls - 1] = (syscall_t)&sys_ni_syscall,
 
-#define __SYSCALL(nr, entry, nargs)[nr] = (syscall_t)entry,
+#define __SYSCALL(nr, entry)[nr] = (syscall_t)entry,
 #include <asm/syscall_table.h>
-#undef __SYSCALL
 };
 
 #define COLOUR_ALIGN(addr, pgoff) \
diff --git a/arch/xtensa/kernel/syscalls/Makefile b/arch/xtensa/kernel/syscalls/Makefile
index 1c42d2d2926d..6610130c67bc 100644
--- a/arch/xtensa/kernel/syscalls/Makefile
+++ b/arch/xtensa/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@
 
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
diff --git a/arch/xtensa/kernel/syscalls/syscalltbl.sh b/arch/xtensa/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 85d78d9309ad..000000000000
--- a/arch/xtensa/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry ; do
-		emit $((nxt+offset)) $((nr+offset)) $entry
-		nxt=$((nr+1))
-	done
-) > "$out"
-- 
2.27.0

[PATCH 08/27] alpha: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:58:43 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts alpha to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/alpha/kernel/syscalls/Makefile      |  7 ++----
 arch/alpha/kernel/syscalls/syscalltbl.sh | 32 ------------------------
 arch/alpha/kernel/systbls.S              |  3 +--
 3 files changed, 3 insertions(+), 39 deletions(-)
 delete mode 100644 arch/alpha/kernel/syscalls/syscalltbl.sh

diff --git a/arch/alpha/kernel/syscalls/Makefile b/arch/alpha/kernel/syscalls/Makefile
index 1c42d2d2926d..6610130c67bc 100644
--- a/arch/alpha/kernel/syscalls/Makefile
+++ b/arch/alpha/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@
 
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
diff --git a/arch/alpha/kernel/syscalls/syscalltbl.sh b/arch/alpha/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 85d78d9309ad..000000000000
--- a/arch/alpha/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry ; do
-		emit $((nxt+offset)) $((nr+offset)) $entry
-		nxt=$((nr+1))
-	done
-) > "$out"
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 9704f22ed5e3..68f3e4f329eb 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -7,10 +7,9 @@
 
 #include <asm/unistd.h>
 
-#define __SYSCALL(nr, entry, nargs) .quad entry
+#define __SYSCALL(nr, entry) .quad entry
 	.data
 	.align 3
 	.globl sys_call_table
 sys_call_table:
 #include <asm/syscall_table.h>
-#undef __SYSCALL
-- 
2.27.0

[PATCH 12/27] m68k: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:58:58 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts m68k to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/m68k/kernel/syscalls/Makefile      |  7 ++----
 arch/m68k/kernel/syscalls/syscalltbl.sh | 32 -------------------------
 arch/m68k/kernel/syscalltable.S         |  3 +--
 3 files changed, 3 insertions(+), 39 deletions(-)
 delete mode 100644 arch/m68k/kernel/syscalls/syscalltbl.sh

diff --git a/arch/m68k/kernel/syscalls/Makefile b/arch/m68k/kernel/syscalls/Makefile
index 1c42d2d2926d..6610130c67bc 100644
--- a/arch/m68k/kernel/syscalls/Makefile
+++ b/arch/m68k/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@
 
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
diff --git a/arch/m68k/kernel/syscalls/syscalltbl.sh b/arch/m68k/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 85d78d9309ad..000000000000
--- a/arch/m68k/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry ; do
-		emit $((nxt+offset)) $((nr+offset)) $entry
-		nxt=$((nr+1))
-	done
-) > "$out"
diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S
index d329cc7b481c..e25ef4a9df30 100644
--- a/arch/m68k/kernel/syscalltable.S
+++ b/arch/m68k/kernel/syscalltable.S
@@ -18,9 +18,8 @@
 #define sys_mmap2	sys_mmap_pgoff
 #endif
 
-#define __SYSCALL(nr, entry, nargs) .long entry
+#define __SYSCALL(nr, entry) .long entry
 	.section .rodata
 ALIGN
 ENTRY(sys_call_table)
 #include <asm/syscall_table.h>
-#undef __SYSCALL
-- 
2.27.0

Re: [PATCH 12/27] m68k: syscalls: switch to generic syscalltbl.sh

From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2021-01-28 08:18:40 

Hi Yamada-san,

On Thu, Jan 28, 2021 at 1:54 AM Masahiro Yamada [off-list ref] wrote:
As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts m68k to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Thanks a lot!

Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[PATCH 17/27] parisc: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:59:24 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/parisc/kernel/syscalls/Makefile | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/arch/parisc/kernel/syscalls/Makefile b/arch/parisc/kernel/syscalls/Makefile
index c22a21c39f30..556fe30a6c8f 100644
--- a/arch/parisc/kernel/syscalls/Makefile
+++ b/arch/parisc/kernel/syscalls/Makefile
@@ -22,24 +22,24 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_offset_$(basetarget))'
 
 syshdr_abis_unistd_32 := common,32
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_abis_unistd_64 := common,64
-$(uapi)/unistd_64.h: $(syscall) $(syshdr)
+$(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 systbl_abis_syscall_table_32 := common,32
-$(kapi)/syscall_table_32.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abis_syscall_table_64 := common,64
-$(kapi)/syscall_table_64.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abis_syscall_table_c32 := common,32
 systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h unistd_64.h
@@ -47,9 +47,10 @@ kapisyshdr-y		+= syscall_table_32.h		\
 			   syscall_table_64.h		\
 			   syscall_table_c32.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 11/27] m68k: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 00:59:31 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/m68k/kernel/syscalls/Makefile | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/m68k/kernel/syscalls/Makefile b/arch/m68k/kernel/syscalls/Makefile
index 659faefdcb1d..1c42d2d2926d 100644
--- a/arch/m68k/kernel/syscalls/Makefile
+++ b/arch/m68k/kernel/syscalls/Makefile
@@ -21,18 +21,19 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_abi_$(basetarget))'		\
 		   '$(systbl_offset_$(basetarget))'
 
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-$(kapi)/syscall_table.h: $(syscall) $(systbl)
+$(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h
 kapisyshdr-y		+= syscall_table.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

Re: [PATCH 11/27] m68k: add missing FORCE and fix 'targets' to make if_changed work

From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2021-01-28 08:03:43 

On Thu, Jan 28, 2021 at 1:54 AM Masahiro Yamada [off-list ref] wrote:
The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[PATCH 24/27] powerpc: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:00:34 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/powerpc/kernel/syscalls/Makefile | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/arch/powerpc/kernel/syscalls/Makefile b/arch/powerpc/kernel/syscalls/Makefile
index 27b48954808d..d609f0040b2a 100644
--- a/arch/powerpc/kernel/syscalls/Makefile
+++ b/arch/powerpc/kernel/syscalls/Makefile
@@ -22,31 +22,31 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_offset_$(basetarget))'
 
 syshdr_abis_unistd_32 := common,nospu,32
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_abis_unistd_64 := common,nospu,64
-$(uapi)/unistd_64.h: $(syscall) $(syshdr)
+$(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 systbl_abis_syscall_table_32 := common,nospu,32
 systbl_abi_syscall_table_32 := 32
-$(kapi)/syscall_table_32.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abis_syscall_table_64 := common,nospu,64
 systbl_abi_syscall_table_64 := 64
-$(kapi)/syscall_table_64.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abis_syscall_table_c32 := common,nospu,32
 systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abis_syscall_table_spu := common,spu
 systbl_abi_syscall_table_spu := spu
-$(kapi)/syscall_table_spu.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_spu.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h unistd_64.h
@@ -55,9 +55,10 @@ kapisyshdr-y		+= syscall_table_32.h		\
 			   syscall_table_c32.h		\
 			   syscall_table_spu.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 16/27] mips: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:00:57 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts mips to use scripts/syscalltbl.sh. This also
unifies syscall_table_32_o32.h and syscall_table_64_o32.h into
syscall_table_o32.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/mips/include/asm/Kbuild            |  7 +++--
 arch/mips/kernel/scall32-o32.S          |  4 +--
 arch/mips/kernel/scall64-n32.S          |  3 +--
 arch/mips/kernel/scall64-n64.S          |  3 +--
 arch/mips/kernel/scall64-o32.S          |  4 +--
 arch/mips/kernel/syscalls/Makefile      | 34 ++++++++---------------
 arch/mips/kernel/syscalls/syscalltbl.sh | 36 -------------------------
 7 files changed, 20 insertions(+), 71 deletions(-)
 delete mode 100644 arch/mips/kernel/syscalls/syscalltbl.sh

diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild
index 95b4fa7bd0d1..70b15857369d 100644
--- a/arch/mips/include/asm/Kbuild
+++ b/arch/mips/include/asm/Kbuild
@@ -1,9 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 # MIPS headers
-generated-y += syscall_table_32_o32.h
-generated-y += syscall_table_64_n32.h
-generated-y += syscall_table_64_n64.h
-generated-y += syscall_table_64_o32.h
+generated-y += syscall_table_n32.h
+generated-y += syscall_table_n64.h
+generated-y += syscall_table_o32.h
 generic-y += export.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index b449b68662a9..84e8624e83a2 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -217,9 +217,9 @@ einval: li	v0, -ENOSYS
 #define sys_sched_getaffinity	mipsmt_sys_sched_getaffinity
 #endif /* CONFIG_MIPS_MT_FPAFF */
 
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
 #define __SYSCALL(nr, entry) 	PTR entry
 	.align	2
 	.type	sys_call_table, @object
 EXPORT(sys_call_table)
-#include <asm/syscall_table_32_o32.h>
-#undef __SYSCALL
+#include <asm/syscall_table_o32.h>
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 35d8c86b160e..f650c55a17dc 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -104,5 +104,4 @@ not_n32_scall:
 #define __SYSCALL(nr, entry)	PTR entry
 	.type	sysn32_call_table, @object
 EXPORT(sysn32_call_table)
-#include <asm/syscall_table_64_n32.h>
-#undef __SYSCALL
+#include <asm/syscall_table_n32.h>
diff --git a/arch/mips/kernel/scall64-n64.S b/arch/mips/kernel/scall64-n64.S
index 23b2e2b1609c..c71c13f9fcbc 100644
--- a/arch/mips/kernel/scall64-n64.S
+++ b/arch/mips/kernel/scall64-n64.S
@@ -113,5 +113,4 @@ illegal_syscall:
 	.align	3
 	.type	sys_call_table, @object
 EXPORT(sys_call_table)
-#include <asm/syscall_table_64_n64.h>
-#undef __SYSCALL
+#include <asm/syscall_table_n64.h>
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 50c9a57e0d3a..cedc8bd88804 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -213,9 +213,9 @@ einval: li	v0, -ENOSYS
 	jr	ra
 	END(sys32_syscall)
 
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
 #define __SYSCALL(nr, entry)	PTR entry
 	.align	3
 	.type	sys32_call_table,@object
 EXPORT(sys32_call_table)
-#include <asm/syscall_table_64_o32.h>
-#undef __SYSCALL
+#include <asm/syscall_table_o32.h>
diff --git a/arch/mips/kernel/syscalls/Makefile b/arch/mips/kernel/syscalls/Makefile
index f15842bda464..265dab4253ab 100644
--- a/arch/mips/kernel/syscalls/Makefile
+++ b/arch/mips/kernel/syscalls/Makefile
@@ -10,7 +10,7 @@ syscalln64 := $(srctree)/$(src)/syscall_n64.tbl
 syscallo32 := $(srctree)/$(src)/syscall_o32.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
 sysnr := $(srctree)/$(src)/syscallnr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -25,10 +25,7 @@ quiet_cmd_sysnr = SYSNR   $@
 		  '$(sysnr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ "" $(offset)
 
 syshdr_offset_unistd_n32 := __NR_Linux
 $(uapi)/unistd_n32.h: $(syscalln32) $(syshdr) FORCE
@@ -57,24 +54,16 @@ sysnr_offset_unistd_nr_o32 := 4000
 $(uapi)/unistd_nr_o32.h: $(syscallo32) $(sysnr) FORCE
 	$(call if_changed,sysnr)
 
-systbl_abi_syscall_table_32_o32 := 32_o32
-systbl_offset_syscall_table_32_o32 := 4000
-$(kapi)/syscall_table_32_o32.h: $(syscallo32) $(systbl) FORCE
+$(kapi)/syscall_table_n32.h: offset := 6000
+$(kapi)/syscall_table_n32.h: $(syscalln32) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abi_syscall_table_64_n32 := 64_n32
-systbl_offset_syscall_table_64_n32 := 6000
-$(kapi)/syscall_table_64_n32.h: $(syscalln32) $(systbl) FORCE
+$(kapi)/syscall_table_n64.h: offset := 5000
+$(kapi)/syscall_table_n64.h: $(syscalln64) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abi_syscall_table_64_n64 := 64_n64
-systbl_offset_syscall_table_64_n64 := 5000
-$(kapi)/syscall_table_64_n64.h: $(syscalln64) $(systbl) FORCE
-	$(call if_changed,systbl)
-
-systbl_abi_syscall_table_64_o32 := 64_o32
-systbl_offset_syscall_table_64_o32 := 4000
-$(kapi)/syscall_table_64_o32.h: $(syscallo32) $(systbl) FORCE
+$(kapi)/syscall_table_o32.h: offset := 4000
+$(kapi)/syscall_table_o32.h: $(syscallo32) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_n32.h			\
@@ -83,10 +72,9 @@ uapisyshdr-y		+= unistd_n32.h			\
 			   unistd_nr_n32.h		\
 			   unistd_nr_n64.h		\
 			   unistd_nr_o32.h
-kapisyshdr-y		+= syscall_table_32_o32.h	\
-			   syscall_table_64_n32.h	\
-			   syscall_table_64_n64.h	\
-			   syscall_table_64_o32.h
+kapisyshdr-y		+= syscall_table_n32.h		\
+			   syscall_table_n64.h		\
+			   syscall_table_o32.h
 
 uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
 kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
diff --git a/arch/mips/kernel/syscalls/syscalltbl.sh b/arch/mips/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 1e2570740c20..000000000000
--- a/arch/mips/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry compat ; do
-		if [ "$my_abi" = "64_o32" ] && [ ! -z "$compat" ]; then
-			emit $((nxt+offset)) $((nr+offset)) $compat
-		else
-			emit $((nxt+offset)) $((nr+offset)) $entry
-		fi
-		nxt=$((nr+1))
-	done
-) > "$out"
-- 
2.27.0

[PATCH 20/27] sh: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:01:24 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts sh to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/sh/kernel/syscalls/Makefile      |  7 ++----
 arch/sh/kernel/syscalls/syscalltbl.sh | 32 ---------------------------
 2 files changed, 2 insertions(+), 37 deletions(-)
 delete mode 100644 arch/sh/kernel/syscalls/syscalltbl.sh

diff --git a/arch/sh/kernel/syscalls/Makefile b/arch/sh/kernel/syscalls/Makefile
index 1c42d2d2926d..6610130c67bc 100644
--- a/arch/sh/kernel/syscalls/Makefile
+++ b/arch/sh/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@
 
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
diff --git a/arch/sh/kernel/syscalls/syscalltbl.sh b/arch/sh/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 904b8e6e625d..000000000000
--- a/arch/sh/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry ; do
-		emit $((nxt+offset)) $((nr+offset)) $entry
-		nxt=$((nr+1))
-	done
-) > "$out"
-- 
2.27.0

[PATCH 15/27] mips: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:01:33 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/mips/kernel/syscalls/Makefile | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/arch/mips/kernel/syscalls/Makefile b/arch/mips/kernel/syscalls/Makefile
index 6efb2f6889a7..f15842bda464 100644
--- a/arch/mips/kernel/syscalls/Makefile
+++ b/arch/mips/kernel/syscalls/Makefile
@@ -31,50 +31,50 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_offset_$(basetarget))'
 
 syshdr_offset_unistd_n32 := __NR_Linux
-$(uapi)/unistd_n32.h: $(syscalln32) $(syshdr)
+$(uapi)/unistd_n32.h: $(syscalln32) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_offset_unistd_n64 := __NR_Linux
-$(uapi)/unistd_n64.h: $(syscalln64) $(syshdr)
+$(uapi)/unistd_n64.h: $(syscalln64) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_offset_unistd_o32 := __NR_Linux
-$(uapi)/unistd_o32.h: $(syscallo32) $(syshdr)
+$(uapi)/unistd_o32.h: $(syscallo32) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 sysnr_pfx_unistd_nr_n32 := N32
 sysnr_offset_unistd_nr_n32 := 6000
-$(uapi)/unistd_nr_n32.h: $(syscalln32) $(sysnr)
+$(uapi)/unistd_nr_n32.h: $(syscalln32) $(sysnr) FORCE
 	$(call if_changed,sysnr)
 
 sysnr_pfx_unistd_nr_n64 := 64
 sysnr_offset_unistd_nr_n64 := 5000
-$(uapi)/unistd_nr_n64.h: $(syscalln64) $(sysnr)
+$(uapi)/unistd_nr_n64.h: $(syscalln64) $(sysnr) FORCE
 	$(call if_changed,sysnr)
 
 sysnr_pfx_unistd_nr_o32 := O32
 sysnr_offset_unistd_nr_o32 := 4000
-$(uapi)/unistd_nr_o32.h: $(syscallo32) $(sysnr)
+$(uapi)/unistd_nr_o32.h: $(syscallo32) $(sysnr) FORCE
 	$(call if_changed,sysnr)
 
 systbl_abi_syscall_table_32_o32 := 32_o32
 systbl_offset_syscall_table_32_o32 := 4000
-$(kapi)/syscall_table_32_o32.h: $(syscallo32) $(systbl)
+$(kapi)/syscall_table_32_o32.h: $(syscallo32) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abi_syscall_table_64_n32 := 64_n32
 systbl_offset_syscall_table_64_n32 := 6000
-$(kapi)/syscall_table_64_n32.h: $(syscalln32) $(systbl)
+$(kapi)/syscall_table_64_n32.h: $(syscalln32) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abi_syscall_table_64_n64 := 64_n64
 systbl_offset_syscall_table_64_n64 := 5000
-$(kapi)/syscall_table_64_n64.h: $(syscalln64) $(systbl)
+$(kapi)/syscall_table_64_n64.h: $(syscalln64) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abi_syscall_table_64_o32 := 64_o32
 systbl_offset_syscall_table_64_o32 := 4000
-$(kapi)/syscall_table_64_o32.h: $(syscallo32) $(systbl)
+$(kapi)/syscall_table_64_o32.h: $(syscallo32) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_n32.h			\
@@ -88,9 +88,10 @@ kapisyshdr-y		+= syscall_table_32_o32.h	\
 			   syscall_table_64_n64.h	\
 			   syscall_table_64_o32.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 25/27] powerpc: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:02:44 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts powerpc to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/powerpc/include/asm/Kbuild             |  1 -
 arch/powerpc/kernel/syscalls/Makefile       | 22 +++----------
 arch/powerpc/kernel/syscalls/syscalltbl.sh  | 36 ---------------------
 arch/powerpc/kernel/systbl.S                |  5 ++-
 arch/powerpc/platforms/cell/spu_callbacks.c |  2 +-
 5 files changed, 10 insertions(+), 56 deletions(-)
 delete mode 100644 arch/powerpc/kernel/syscalls/syscalltbl.sh

diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild
index e1f9b4ea1c53..bcf95ce0964f 100644
--- a/arch/powerpc/include/asm/Kbuild
+++ b/arch/powerpc/include/asm/Kbuild
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 generated-y += syscall_table_32.h
 generated-y += syscall_table_64.h
-generated-y += syscall_table_c32.h
 generated-y += syscall_table_spu.h
 generic-y += export.h
 generic-y += kvm_types.h
diff --git a/arch/powerpc/kernel/syscalls/Makefile b/arch/powerpc/kernel/syscalls/Makefile
index d609f0040b2a..ecf1474f8ea5 100644
--- a/arch/powerpc/kernel/syscalls/Makefile
+++ b/arch/powerpc/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ $(abis)
 
 syshdr_abis_unistd_32 := common,nospu,32
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
@@ -29,30 +26,21 @@ syshdr_abis_unistd_64 := common,nospu,64
 $(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-systbl_abis_syscall_table_32 := common,nospu,32
-systbl_abi_syscall_table_32 := 32
+$(kapi)/syscall_table_32.h: abis := common,nospu,32
 $(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abis_syscall_table_64 := common,nospu,64
-systbl_abi_syscall_table_64 := 64
+$(kapi)/syscall_table_64.h: abis := common,nospu,64
 $(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abis_syscall_table_c32 := common,nospu,32
-systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
-	$(call if_changed,systbl)
-
-systbl_abis_syscall_table_spu := common,spu
-systbl_abi_syscall_table_spu := spu
+$(kapi)/syscall_table_spu.h: abis := common,spu
 $(kapi)/syscall_table_spu.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h unistd_64.h
 kapisyshdr-y		+= syscall_table_32.h		\
 			   syscall_table_64.h		\
-			   syscall_table_c32.h		\
 			   syscall_table_spu.h
 
 uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
diff --git a/arch/powerpc/kernel/syscalls/syscalltbl.sh b/arch/powerpc/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index f7393a7b18aa..000000000000
--- a/arch/powerpc/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry compat ; do
-		if [ "$my_abi" = "c32" ] && [ ! -z "$compat" ]; then
-			emit $((nxt+offset)) $((nr+offset)) $compat
-		else
-			emit $((nxt+offset)) $((nr+offset)) $entry
-		fi
-		nxt=$((nr+1))
-	done
-) > "$out"
diff --git a/arch/powerpc/kernel/systbl.S b/arch/powerpc/kernel/systbl.S
index d34276f3c495..cb3358886203 100644
--- a/arch/powerpc/kernel/systbl.S
+++ b/arch/powerpc/kernel/systbl.S
@@ -21,6 +21,7 @@
 #define __SYSCALL(nr, entry)	.long entry
 #endif
 
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
 .globl sys_call_table
 sys_call_table:
 #ifdef CONFIG_PPC64
@@ -30,8 +31,10 @@ sys_call_table:
 #endif
 
 #ifdef CONFIG_COMPAT
+#undef __SYSCALL_WITH_COMPAT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
 .globl compat_sys_call_table
 compat_sys_call_table:
 #define compat_sys_sigsuspend	sys_sigsuspend
-#include <asm/syscall_table_c32.h>
+#include <asm/syscall_table_32.h>
 #endif
diff --git a/arch/powerpc/platforms/cell/spu_callbacks.c b/arch/powerpc/platforms/cell/spu_callbacks.c
index abdef9bcf432..fe0d8797a00a 100644
--- a/arch/powerpc/platforms/cell/spu_callbacks.c
+++ b/arch/powerpc/platforms/cell/spu_callbacks.c
@@ -35,9 +35,9 @@
  */
 
 static void *spu_syscall_table[] = {
+#define __SYSCALL_WITH_COMPAT(nr, entry, compat) __SYSCALL(nr, entry)
 #define __SYSCALL(nr, entry) [nr] = entry,
 #include <asm/syscall_table_spu.h>
-#undef __SYSCALL
 };
 
 long spu_sys_callback(struct spu_syscall_block *s)
-- 
2.27.0

[PATCH 26/27] xtensa: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:03:02 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/xtensa/kernel/syscalls/Makefile | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/xtensa/kernel/syscalls/Makefile b/arch/xtensa/kernel/syscalls/Makefile
index 659faefdcb1d..1c42d2d2926d 100644
--- a/arch/xtensa/kernel/syscalls/Makefile
+++ b/arch/xtensa/kernel/syscalls/Makefile
@@ -21,18 +21,19 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_abi_$(basetarget))'		\
 		   '$(systbl_offset_$(basetarget))'
 
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-$(kapi)/syscall_table.h: $(syscall) $(systbl)
+$(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h
 kapisyshdr-y		+= syscall_table.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 22/27] sparc: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:03:31 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/sparc/kernel/syscalls/Makefile | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/arch/sparc/kernel/syscalls/Makefile b/arch/sparc/kernel/syscalls/Makefile
index c22a21c39f30..556fe30a6c8f 100644
--- a/arch/sparc/kernel/syscalls/Makefile
+++ b/arch/sparc/kernel/syscalls/Makefile
@@ -22,24 +22,24 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_offset_$(basetarget))'
 
 syshdr_abis_unistd_32 := common,32
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 syshdr_abis_unistd_64 := common,64
-$(uapi)/unistd_64.h: $(syscall) $(syshdr)
+$(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
 systbl_abis_syscall_table_32 := common,32
-$(kapi)/syscall_table_32.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abis_syscall_table_64 := common,64
-$(kapi)/syscall_table_64.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 systbl_abis_syscall_table_c32 := common,32
 systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl)
+$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h unistd_64.h
@@ -47,9 +47,10 @@ kapisyshdr-y		+= syscall_table_32.h		\
 			   syscall_table_64.h		\
 			   syscall_table_c32.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 13/27] microblaze: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:04:09 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/microblaze/kernel/syscalls/Makefile | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/microblaze/kernel/syscalls/Makefile b/arch/microblaze/kernel/syscalls/Makefile
index 659faefdcb1d..1c42d2d2926d 100644
--- a/arch/microblaze/kernel/syscalls/Makefile
+++ b/arch/microblaze/kernel/syscalls/Makefile
@@ -21,18 +21,19 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_abi_$(basetarget))'		\
 		   '$(systbl_offset_$(basetarget))'
 
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-$(kapi)/syscall_table.h: $(syscall) $(systbl)
+$(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h
 kapisyshdr-y		+= syscall_table.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 14/27] microblaze: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:06:22 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts microblaze to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/microblaze/kernel/syscall_table.S        |  3 +-
 arch/microblaze/kernel/syscalls/Makefile      |  7 ++--
 arch/microblaze/kernel/syscalls/syscalltbl.sh | 32 -------------------
 3 files changed, 3 insertions(+), 39 deletions(-)
 delete mode 100644 arch/microblaze/kernel/syscalls/syscalltbl.sh

diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
index ce006646f741..3bc60a2b159e 100644
--- a/arch/microblaze/kernel/syscall_table.S
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 
-#define __SYSCALL(nr, entry, nargs) .long entry
+#define __SYSCALL(nr, entry) .long entry
 ENTRY(sys_call_table)
 #include <asm/syscall_table.h>
-#undef __SYSCALL
diff --git a/arch/microblaze/kernel/syscalls/Makefile b/arch/microblaze/kernel/syscalls/Makefile
index 1c42d2d2926d..6610130c67bc 100644
--- a/arch/microblaze/kernel/syscalls/Makefile
+++ b/arch/microblaze/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@
 
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
diff --git a/arch/microblaze/kernel/syscalls/syscalltbl.sh b/arch/microblaze/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index 85d78d9309ad..000000000000
--- a/arch/microblaze/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry ; do
-		emit $((nxt+offset)) $((nr+offset)) $entry
-		nxt=$((nr+1))
-	done
-) > "$out"
-- 
2.27.0

[PATCH 21/27] sparc: remove wrong comment from arch/sparc/include/asm/Kbuild

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:07:27 

These are NOT exported to userspace.

The headers listed in arch/sparc/include/uapi/asm/Kbuild are exported.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/sparc/include/asm/Kbuild | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
index 3688fdae50e4..aec20406145e 100644
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -1,6 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
-# User exported sparc header files
-
 generated-y += syscall_table_32.h
 generated-y += syscall_table_64.h
 generated-y += syscall_table_c32.h
-- 
2.27.0

Re: [PATCH 21/27] sparc: remove wrong comment from arch/sparc/include/asm/Kbuild

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-02-14 17:02:42 

On Thu, Jan 28, 2021 at 9:52 AM Masahiro Yamada [off-list ref] wrote:
These are NOT exported to userspace.

The headers listed in arch/sparc/include/uapi/asm/Kbuild are exported.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Applied to linux-kbuild/fixes.
quoted hunk
---

 arch/sparc/include/asm/Kbuild | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
index 3688fdae50e4..aec20406145e 100644
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -1,6 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
-# User exported sparc header files
-
 generated-y += syscall_table_32.h
 generated-y += syscall_table_64.h
 generated-y += syscall_table_c32.h
--
2.27.0

-- 
Best Regards
Masahiro Yamada

[PATCH 19/27] sh: add missing FORCE and fix 'targets' to make if_changed work

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:07:27 

The rules in this Makefile cannot detect the command line change because
the prerequisite 'FORCE' is missing.

Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' addition is also wrong; the file paths in
'targets' must be relative to the current Makefile.

Fix all of them so the if_changed rules work correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/sh/kernel/syscalls/Makefile | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/sh/kernel/syscalls/Makefile b/arch/sh/kernel/syscalls/Makefile
index 659faefdcb1d..1c42d2d2926d 100644
--- a/arch/sh/kernel/syscalls/Makefile
+++ b/arch/sh/kernel/syscalls/Makefile
@@ -21,18 +21,19 @@ quiet_cmd_systbl = SYSTBL  $@
 		   '$(systbl_abi_$(basetarget))'		\
 		   '$(systbl_offset_$(basetarget))'
 
-$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-$(kapi)/syscall_table.h: $(syscall) $(systbl)
+$(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
 uapisyshdr-y		+= unistd_32.h
 kapisyshdr-y		+= syscall_table.h
 
-targets	+= $(uapisyshdr-y) $(kapisyshdr-y)
+uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
+kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
+targets		+= $(addprefix ../../../../, $(uapisyshdr-y) $(kapisyshdr-y))
 
 PHONY += all
-all: $(addprefix $(uapi)/,$(uapisyshdr-y))
-all: $(addprefix $(kapi)/,$(kapisyshdr-y))
+all: $(uapisyshdr-y) $(kapisyshdr-y)
 	@:
-- 
2.27.0

[PATCH 18/27] parisc: syscalls: switch to generic syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-01-28 01:08:00 

As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts parisc to use scripts/syscalltbl.sh. This also
unifies syscall_table_64.h and syscall_table_c32.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 arch/parisc/include/asm/Kbuild            |  1 -
 arch/parisc/kernel/syscall.S              | 16 +++++-----
 arch/parisc/kernel/syscalls/Makefile      | 19 ++++--------
 arch/parisc/kernel/syscalls/syscalltbl.sh | 36 -----------------------
 4 files changed, 12 insertions(+), 60 deletions(-)
 delete mode 100644 arch/parisc/kernel/syscalls/syscalltbl.sh

diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index 4406475a2304..e6e7f74c8ac9 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 generated-y += syscall_table_32.h
 generated-y += syscall_table_64.h
-generated-y += syscall_table_c32.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
 generic-y += user.h
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 322503780db6..3f24a0af1e04 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -919,24 +919,24 @@ ENTRY(lws_table)
 END(lws_table)
 	/* End of lws table */
 
+#ifdef CONFIG_64BIT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
+#else
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
+#endif
 #define __SYSCALL(nr, entry)	ASM_ULONG_INSN entry
 	.align 8
 ENTRY(sys_call_table)
 	.export sys_call_table,data
-#ifdef CONFIG_64BIT
-#include <asm/syscall_table_c32.h>   /* Compat syscalls */
-#else
-#include <asm/syscall_table_32.h>    /* 32-bit native syscalls */
-#endif
+#include <asm/syscall_table_32.h>    /* 32-bit syscalls */
 END(sys_call_table)
 
 #ifdef CONFIG_64BIT
 	.align 8
 ENTRY(sys_call_table64)
-#include <asm/syscall_table_64.h>    /* 64-bit native syscalls */
+#include <asm/syscall_table_64.h>    /* 64-bit syscalls */
 END(sys_call_table64)
 #endif
-#undef __SYSCALL
 
 	/*
 		All light-weight-syscall atomic operations 
@@ -961,5 +961,3 @@ END(lws_lock_start)
 	.previous
 
 .end
-
-
diff --git a/arch/parisc/kernel/syscalls/Makefile b/arch/parisc/kernel/syscalls/Makefile
index 556fe30a6c8f..77fea5beb9be 100644
--- a/arch/parisc/kernel/syscalls/Makefile
+++ b/arch/parisc/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\
 
 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 
 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ $(abis)
 
 syshdr_abis_unistd_32 := common,32
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
@@ -29,23 +26,17 @@ syshdr_abis_unistd_64 := common,64
 $(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-systbl_abis_syscall_table_32 := common,32
+$(kapi)/syscall_table_32.h: abis := common,32
 $(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abis_syscall_table_64 := common,64
+$(kapi)/syscall_table_64.h: abis := common,64
 $(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abis_syscall_table_c32 := common,32
-systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
-	$(call if_changed,systbl)
-
 uapisyshdr-y		+= unistd_32.h unistd_64.h
 kapisyshdr-y		+= syscall_table_32.h		\
-			   syscall_table_64.h		\
-			   syscall_table_c32.h
+			   syscall_table_64.h
 
 uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
 kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
diff --git a/arch/parisc/kernel/syscalls/syscalltbl.sh b/arch/parisc/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index f7393a7b18aa..000000000000
--- a/arch/parisc/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry compat ; do
-		if [ "$my_abi" = "c32" ] && [ ! -z "$compat" ]; then
-			emit $((nxt+offset)) $((nr+offset)) $compat
-		else
-			emit $((nxt+offset)) $((nr+offset)) $entry
-		fi
-		nxt=$((nr+1))
-	done
-) > "$out"
-- 
2.27.0

Re: [PATCH 18/27] parisc: syscalls: switch to generic syscalltbl.sh

From: Helge Deller <deller@gmx.de>
Date: 2021-01-28 18:54:57 

On 1/28/21 1:51 AM, Masahiro Yamada wrote:
As of v5.11-rc1, 12 architectures duplicate similar shell scripts in
order to generate syscall table headers. My goal is to unify them into
the single scripts/syscalltbl.sh.

This commit converts parisc to use scripts/syscalltbl.sh. This also
unifies syscall_table_64.h and syscall_table_c32.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Thanks for the cleanup!

You may add:
Acked-by: Helge Deller <deller@gmx.de> # parisc

Helge
quoted hunk
---

 arch/parisc/include/asm/Kbuild            |  1 -
 arch/parisc/kernel/syscall.S              | 16 +++++-----
 arch/parisc/kernel/syscalls/Makefile      | 19 ++++--------
 arch/parisc/kernel/syscalls/syscalltbl.sh | 36 -----------------------
 4 files changed, 12 insertions(+), 60 deletions(-)
 delete mode 100644 arch/parisc/kernel/syscalls/syscalltbl.sh

diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index 4406475a2304..e6e7f74c8ac9 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 generated-y += syscall_table_32.h
 generated-y += syscall_table_64.h
-generated-y += syscall_table_c32.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
 generic-y += user.h
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 322503780db6..3f24a0af1e04 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -919,24 +919,24 @@ ENTRY(lws_table)
 END(lws_table)
 	/* End of lws table */

+#ifdef CONFIG_64BIT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
+#else
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
+#endif
 #define __SYSCALL(nr, entry)	ASM_ULONG_INSN entry
 	.align 8
 ENTRY(sys_call_table)
 	.export sys_call_table,data
-#ifdef CONFIG_64BIT
-#include <asm/syscall_table_c32.h>   /* Compat syscalls */
-#else
-#include <asm/syscall_table_32.h>    /* 32-bit native syscalls */
-#endif
+#include <asm/syscall_table_32.h>    /* 32-bit syscalls */
 END(sys_call_table)

 #ifdef CONFIG_64BIT
 	.align 8
 ENTRY(sys_call_table64)
-#include <asm/syscall_table_64.h>    /* 64-bit native syscalls */
+#include <asm/syscall_table_64.h>    /* 64-bit syscalls */
 END(sys_call_table64)
 #endif
-#undef __SYSCALL

 	/*
 		All light-weight-syscall atomic operations
@@ -961,5 +961,3 @@ END(lws_lock_start)
 	.previous

 .end
-
-
diff --git a/arch/parisc/kernel/syscalls/Makefile b/arch/parisc/kernel/syscalls/Makefile
index 556fe30a6c8f..77fea5beb9be 100644
--- a/arch/parisc/kernel/syscalls/Makefile
+++ b/arch/parisc/kernel/syscalls/Makefile
@@ -7,7 +7,7 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')	\

 syscall := $(srctree)/$(src)/syscall.tbl
 syshdr := $(srctree)/$(src)/syscallhdr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh

 quiet_cmd_syshdr = SYSHDR  $@
       cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'	\
@@ -16,10 +16,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '$(syshdr_offset_$(basetarget))'

 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'	\
-		   '$(systbl_abis_$(basetarget))'		\
-		   '$(systbl_abi_$(basetarget))'		\
-		   '$(systbl_offset_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@ $(abis)

 syshdr_abis_unistd_32 := common,32
 $(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
@@ -29,23 +26,17 @@ syshdr_abis_unistd_64 := common,64
 $(uapi)/unistd_64.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)

-systbl_abis_syscall_table_32 := common,32
+$(kapi)/syscall_table_32.h: abis := common,32
 $(kapi)/syscall_table_32.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)

-systbl_abis_syscall_table_64 := common,64
+$(kapi)/syscall_table_64.h: abis := common,64
 $(kapi)/syscall_table_64.h: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)

-systbl_abis_syscall_table_c32 := common,32
-systbl_abi_syscall_table_c32 := c32
-$(kapi)/syscall_table_c32.h: $(syscall) $(systbl) FORCE
-	$(call if_changed,systbl)
-
 uapisyshdr-y		+= unistd_32.h unistd_64.h
 kapisyshdr-y		+= syscall_table_32.h		\
-			   syscall_table_64.h		\
-			   syscall_table_c32.h
+			   syscall_table_64.h

 uapisyshdr-y	:= $(addprefix $(uapi)/, $(uapisyshdr-y))
 kapisyshdr-y	:= $(addprefix $(kapi)/, $(kapisyshdr-y))
diff --git a/arch/parisc/kernel/syscalls/syscalltbl.sh b/arch/parisc/kernel/syscalls/syscalltbl.sh
deleted file mode 100644
index f7393a7b18aa..000000000000
--- a/arch/parisc/kernel/syscalls/syscalltbl.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-my_abi="$4"
-offset="$5"
-
-emit() {
-	t_nxt="$1"
-	t_nr="$2"
-	t_entry="$3"
-
-	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
-		t_nxt=$((t_nxt+1))
-	done
-	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
-}
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-	nxt=0
-	if [ -z "$offset" ]; then
-		offset=0
-	fi
-
-	while read nr abi name entry compat ; do
-		if [ "$my_abi" = "c32" ] && [ ! -z "$compat" ]; then
-			emit $((nxt+offset)) $((nr+offset)) $compat
-		else
-			emit $((nxt+offset)) $((nr+offset)) $entry
-		fi
-		nxt=$((nr+1))
-	done
-) > "$out"

Re: [PATCH 00/27] arch: syscalls: unifiy all syscalltbl.sh into scripts/syscalltbl.sh

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-02-15 12:06:07 

On Thu, Jan 28, 2021 at 9:51 AM Masahiro Yamada [off-list ref] wrote:

As of v5.11-rc1, 12 architectures duplicate similar shell scripts:

  $ find arch -name syscalltbl.sh | sort
  arch/alpha/kernel/syscalls/syscalltbl.sh
  arch/arm/tools/syscalltbl.sh
  arch/ia64/kernel/syscalls/syscalltbl.sh
  arch/m68k/kernel/syscalls/syscalltbl.sh
  arch/microblaze/kernel/syscalls/syscalltbl.sh
  arch/mips/kernel/syscalls/syscalltbl.sh
  arch/parisc/kernel/syscalls/syscalltbl.sh
  arch/powerpc/kernel/syscalls/syscalltbl.sh
  arch/sh/kernel/syscalls/syscalltbl.sh
  arch/sparc/kernel/syscalls/syscalltbl.sh
  arch/x86/entry/syscalls/syscalltbl.sh
  arch/xtensa/kernel/syscalls/syscalltbl.sh

This patch set unifies all of them into a single file,
scripts/syscalltbl.sh.

The code-diff is attractive:

 51 files changed, 254 insertions(+), 674 deletions(-)
 delete mode 100644 arch/alpha/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/arm/tools/syscalltbl.sh
 delete mode 100644 arch/ia64/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/m68k/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/microblaze/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/mips/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/parisc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/powerpc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sh/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sparc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/x86/entry/syscalls/syscalltbl.sh
 delete mode 100644 arch/xtensa/kernel/syscalls/syscalltbl.sh
 create mode 100644 scripts/syscalltbl.sh

Also, this includes Makefile fixes, and some x86 fixes and cleanups.

My question is, how to merge this series.

I am touching all architectures, but the first patch is a prerequisite
of the rest of this series.

One possibility is to ask the x86 maintainers to pickup the first 5
patches for v5.12-rc1, and then send the rest for v5.13-rc1,
splitting per-arch.

I want the x86 maintainers to check the first 5 patches because
I cleaned up the x32 code.

Never mind.

Sending too big patch set tends to fail.

I will apply the generic script parts to my tree,
then split the rest per arch in the next development cycle
(aim for v5.13-rc1)









I know x32 was considered for deprecation, but my motivation is to
clean-up scripts across the tree without changing the functionality.



Masahiro Yamada (27):
  scripts: add generic syscalltbl.sh
  x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL()
  x86/build: add missing FORCE and fix 'targets' to make if_changed work
  x86/entry/x32: rename __x32_compat_sys_* to __x64_compat_sys_*
  x86/syscalls: switch to generic syscalltbl.sh
  ARM: syscalls: switch to generic syscalltbl.sh
  alpha: add missing FORCE and fix 'targets' to make if_changed work
  alpha: syscalls: switch to generic syscalltbl.sh
  ia64: add missing FORCE and fix 'targets' to make if_changed work
  ia64: syscalls: switch to generic syscalltbl.sh
  m68k: add missing FORCE and fix 'targets' to make if_changed work
  m68k: syscalls: switch to generic syscalltbl.sh
  microblaze: add missing FORCE and fix 'targets' to make if_changed
    work
  microblaze: syscalls: switch to generic syscalltbl.sh
  mips: add missing FORCE and fix 'targets' to make if_changed work
  mips: syscalls: switch to generic syscalltbl.sh
  parisc: add missing FORCE and fix 'targets' to make if_changed work
  parisc: syscalls: switch to generic syscalltbl.sh
  sh: add missing FORCE and fix 'targets' to make if_changed work
  sh: syscalls: switch to generic syscalltbl.sh
  sparc: remove wrong comment from arch/sparc/include/asm/Kbuild
  sparc: add missing FORCE and fix 'targets' to make if_changed work
  sparc: syscalls: switch to generic syscalltbl.sh
  powerpc: add missing FORCE and fix 'targets' to make if_changed work
  powerpc: syscalls: switch to generic syscalltbl.sh
  xtensa: add missing FORCE and fix 'targets' to make if_changed work
  xtensa: syscalls: switch to generic syscalltbl.sh

 arch/alpha/kernel/syscalls/Makefile           | 18 +++----
 arch/alpha/kernel/syscalls/syscalltbl.sh      | 32 -----------
 arch/alpha/kernel/systbls.S                   |  3 +-
 arch/arm/kernel/entry-common.S                |  8 +--
 arch/arm/tools/Makefile                       |  9 ++--
 arch/arm/tools/syscalltbl.sh                  | 22 --------
 arch/ia64/kernel/entry.S                      |  3 +-
 arch/ia64/kernel/syscalls/Makefile            | 19 +++----
 arch/ia64/kernel/syscalls/syscalltbl.sh       | 32 -----------
 arch/m68k/kernel/syscalls/Makefile            | 18 +++----
 arch/m68k/kernel/syscalls/syscalltbl.sh       | 32 -----------
 arch/m68k/kernel/syscalltable.S               |  3 +-
 arch/microblaze/kernel/syscall_table.S        |  3 +-
 arch/microblaze/kernel/syscalls/Makefile      | 18 +++----
 arch/microblaze/kernel/syscalls/syscalltbl.sh | 32 -----------
 arch/mips/include/asm/Kbuild                  |  7 ++-
 arch/mips/kernel/scall32-o32.S                |  4 +-
 arch/mips/kernel/scall64-n32.S                |  3 +-
 arch/mips/kernel/scall64-n64.S                |  3 +-
 arch/mips/kernel/scall64-o32.S                |  4 +-
 arch/mips/kernel/syscalls/Makefile            | 53 ++++++++-----------
 arch/mips/kernel/syscalls/syscalltbl.sh       | 36 -------------
 arch/parisc/include/asm/Kbuild                |  1 -
 arch/parisc/kernel/syscall.S                  | 16 +++---
 arch/parisc/kernel/syscalls/Makefile          | 34 +++++-------
 arch/parisc/kernel/syscalls/syscalltbl.sh     | 36 -------------
 arch/powerpc/include/asm/Kbuild               |  1 -
 arch/powerpc/kernel/syscalls/Makefile         | 39 +++++---------
 arch/powerpc/kernel/syscalls/syscalltbl.sh    | 36 -------------
 arch/powerpc/kernel/systbl.S                  |  5 +-
 arch/powerpc/platforms/cell/spu_callbacks.c   |  2 +-
 arch/sh/kernel/syscalls/Makefile              | 18 +++----
 arch/sh/kernel/syscalls/syscalltbl.sh         | 32 -----------
 arch/sparc/include/asm/Kbuild                 |  3 --
 arch/sparc/kernel/syscalls/Makefile           | 34 +++++-------
 arch/sparc/kernel/syscalls/syscalltbl.sh      | 36 -------------
 arch/sparc/kernel/systbls_32.S                |  4 +-
 arch/sparc/kernel/systbls_64.S                |  8 +--
 arch/x86/entry/syscall_32.c                   | 12 +++--
 arch/x86/entry/syscall_64.c                   |  9 ++--
 arch/x86/entry/syscall_x32.c                  | 27 ++--------
 arch/x86/entry/syscalls/Makefile              | 33 +++++++-----
 arch/x86/entry/syscalls/syscalltbl.sh         | 46 ----------------
 arch/x86/include/asm/Kbuild                   |  1 +
 arch/x86/include/asm/syscall_wrapper.h        | 11 ++--
 arch/x86/um/sys_call_table_32.c               |  8 +--
 arch/x86/um/sys_call_table_64.c               |  9 ++--
 arch/xtensa/kernel/syscall.c                  |  3 +-
 arch/xtensa/kernel/syscalls/Makefile          | 18 +++----
 arch/xtensa/kernel/syscalls/syscalltbl.sh     | 32 -----------
 scripts/syscalltbl.sh                         | 52 ++++++++++++++++++
 51 files changed, 254 insertions(+), 674 deletions(-)
 delete mode 100644 arch/alpha/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/arm/tools/syscalltbl.sh
 delete mode 100644 arch/ia64/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/m68k/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/microblaze/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/mips/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/parisc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/powerpc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sh/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/sparc/kernel/syscalls/syscalltbl.sh
 delete mode 100644 arch/x86/entry/syscalls/syscalltbl.sh
 delete mode 100644 arch/xtensa/kernel/syscalls/syscalltbl.sh
 create mode 100644 scripts/syscalltbl.sh

--
2.27.0

-- 
Best Regards
Masahiro Yamada
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