[PATCH v3 2/9] crash_core: change the prototype of function parse_crashkernel()
From: Baoquan He <hidden>
Date: 2023-09-14 03:32:57
Also in:
kexec, linux-riscv, lkml
Subsystem:
arm port, arm64 port (aarch64 architecture), kdump, linux for powerpc (32-bit and 64-bit), loongarch, mips, risc-v architecture, s390 architecture, superh, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Russell King, Catalin Marinas, Will Deacon, Andrew Morton, Baoquan He, Mike Rapoport, Pasha Tatashin, Pratyush Yadav, Madhavan Srinivasan, Michael Ellerman, Huacai Chen, Thomas Bogendoerfer, Paul Walmsley, Palmer Dabbelt, Albert Ou, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Add two parameters 'low_size' and 'high' to function parse_crashkernel(), later crashkernel=,high|low parsing will be added. Make adjustments in all call sites of parse_crashkernel() in arch. Signed-off-by: Baoquan He <redacted> Reviewed-by: Zhen Lei <redacted> --- arch/arm/kernel/setup.c | 3 ++- arch/arm64/mm/init.c | 2 +- arch/ia64/kernel/setup.c | 2 +- arch/loongarch/kernel/setup.c | 4 +++- arch/mips/kernel/setup.c | 3 ++- arch/powerpc/kernel/fadump.c | 2 +- arch/powerpc/kexec/core.c | 2 +- arch/powerpc/mm/nohash/kaslr_booke.c | 2 +- arch/riscv/mm/init.c | 2 +- arch/s390/kernel/setup.c | 4 ++-- arch/sh/kernel/machine_kexec.c | 2 +- arch/x86/kernel/setup.c | 3 ++- include/linux/crash_core.h | 3 ++- kernel/crash_core.c | 15 ++++++++++++--- 14 files changed, 32 insertions(+), 17 deletions(-)
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index c66b560562b3..e2bb7afd0683 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c@@ -1010,7 +1010,8 @@ static void __init reserve_crashkernel(void) total_mem = get_total_mem(); ret = parse_crashkernel(boot_command_line, total_mem, - &crash_size, &crash_base); + &crash_size, &crash_base, + NULL, NULL); /* invalid value specified or crashkernel=0 */ if (ret || !crash_size) return;
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 8a0f8604348b..801c59c39a8f 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c@@ -142,7 +142,7 @@ static void __init reserve_crashkernel(void) /* crashkernel=X[@offset] */ ret = parse_crashkernel(cmdline, memblock_phys_mem_size(), - &crash_size, &crash_base); + &crash_size, &crash_base, NULL, NULL); if (ret == -ENOENT) { ret = parse_crashkernel_high(cmdline, 0, &crash_size, &crash_base); if (ret || !crash_size)
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 5a55ac82c13a..4faea2d2cf07 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c@@ -277,7 +277,7 @@ static void __init setup_crashkernel(unsigned long total, int *n) int ret; ret = parse_crashkernel(boot_command_line, total, - &size, &base); + &size, &base, NULL, NULL); if (ret == 0 && size > 0) { if (!base) { sort_regions(rsvd_region, *n);
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index 7783f0a3d742..4de32b07c0dc 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c@@ -267,7 +267,9 @@ static void __init arch_parse_crashkernel(void) unsigned long long crash_base, crash_size; total_mem = memblock_phys_mem_size(); - ret = parse_crashkernel(boot_command_line, total_mem, &crash_size, &crash_base); + ret = parse_crashkernel(boot_command_line, total_mem, + &crash_size, &crash_base, + NULL, NULL); if (ret < 0 || crash_size <= 0) return;
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index cb871eb784a7..08321c945ac4 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c@@ -460,7 +460,8 @@ static void __init mips_parse_crashkernel(void) total_mem = memblock_phys_mem_size(); ret = parse_crashkernel(boot_command_line, total_mem, - &crash_size, &crash_base); + &crash_size, &crash_base, + NULL, NULL); if (ret != 0 || crash_size <= 0) return;
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 3ff2da7b120b..d14eda1e8589 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c@@ -313,7 +313,7 @@ static __init u64 fadump_calculate_reserve_size(void) * memory at a predefined offset. */ ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(), - &size, &base); + &size, &base, NULL, NULL); if (ret == 0 && size > 0) { unsigned long max_size;
diff --git a/arch/powerpc/kexec/core.c b/arch/powerpc/kexec/core.c
index de64c7962991..9346c960b296 100644
--- a/arch/powerpc/kexec/core.c
+++ b/arch/powerpc/kexec/core.c@@ -109,7 +109,7 @@ void __init reserve_crashkernel(void) total_mem_sz = memory_limit ? memory_limit : memblock_phys_mem_size(); /* use common parsing */ ret = parse_crashkernel(boot_command_line, total_mem_sz, - &crash_size, &crash_base); + &crash_size, &crash_base, NULL, NULL); if (ret == 0 && crash_size > 0) { crashk_res.start = crash_base; crashk_res.end = crash_base + crash_size - 1;
diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c
index 2fb3edafe9ab..b4f2786a7d2b 100644
--- a/arch/powerpc/mm/nohash/kaslr_booke.c
+++ b/arch/powerpc/mm/nohash/kaslr_booke.c@@ -178,7 +178,7 @@ static void __init get_crash_kernel(void *fdt, unsigned long size) int ret; ret = parse_crashkernel(boot_command_line, size, &crash_size, - &crash_base); + &crash_base, NULL, NULL); if (ret != 0 || crash_size == 0) return; if (crash_base == 0)
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 0798bd861dcb..9fe448900059 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c@@ -1388,7 +1388,7 @@ static void __init reserve_crashkernel(void) } ret = parse_crashkernel(cmdline, memblock_phys_mem_size(), - &crash_size, &crash_base); + &crash_size, &crash_base, NULL, NULL); if (ret == -ENOENT) { /* Fallback to crashkernel=X,[high,low] */ ret = parse_crashkernel_high(cmdline, 0, &crash_size, &crash_base);
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index de6ad0fb2328..e555b576d3c8 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c@@ -625,8 +625,8 @@ static void __init reserve_crashkernel(void) phys_addr_t low, high; int rc; - rc = parse_crashkernel(boot_command_line, ident_map_size, &crash_size, - &crash_base); + rc = parse_crashkernel(boot_command_line, ident_map_size, + &crash_size, &crash_base, NULL, NULL); crash_base = ALIGN(crash_base, KEXEC_CRASH_MEM_ALIGN); crash_size = ALIGN(crash_size, KEXEC_CRASH_MEM_ALIGN);
diff --git a/arch/sh/kernel/machine_kexec.c b/arch/sh/kernel/machine_kexec.c
index 223c14f44af7..fa3a7b36190a 100644
--- a/arch/sh/kernel/machine_kexec.c
+++ b/arch/sh/kernel/machine_kexec.c@@ -154,7 +154,7 @@ void __init reserve_crashkernel(void) int ret; ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(), - &crash_size, &crash_base); + &crash_size, &crash_base, NULL, NULL); if (ret == 0 && crash_size > 0) { crashk_res.start = crash_base; crashk_res.end = crash_base + crash_size - 1;
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index b9145a63da77..f945d88215b4 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c@@ -557,7 +557,8 @@ static void __init reserve_crashkernel(void) total_mem = memblock_phys_mem_size(); /* crashkernel=XM */ - ret = parse_crashkernel(boot_command_line, total_mem, &crash_size, &crash_base); + ret = parse_crashkernel(boot_command_line, total_mem, + &crash_size, &crash_base, NULL, NULL); if (ret != 0 || crash_size <= 0) { /* crashkernel=X,high */ ret = parse_crashkernel_high(boot_command_line, total_mem,
diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h
index 0c06561bf5ff..6156355ef831 100644
--- a/include/linux/crash_core.h
+++ b/include/linux/crash_core.h@@ -80,7 +80,8 @@ Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type, void final_note(Elf_Word *buf); int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, - unsigned long long *crash_size, unsigned long long *crash_base); + unsigned long long *crash_size, unsigned long long *crash_base, + unsigned long long *low_size, bool *high); int parse_crashkernel_high(char *cmdline, unsigned long long system_ram, unsigned long long *crash_size, unsigned long long *crash_base); int parse_crashkernel_low(char *cmdline, unsigned long long system_ram,
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index c9695204715d..cca1d76e8255 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c@@ -287,10 +287,19 @@ static int __init __parse_crashkernel(char *cmdline, int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, unsigned long long *crash_size, - unsigned long long *crash_base) + unsigned long long *crash_base, + unsigned long long *low_size, + bool *high) { - return __parse_crashkernel(cmdline, system_ram, crash_size, crash_base, - NULL); + int ret; + + /* crashkernel=X[@offset] */ + ret = __parse_crashkernel(cmdline, system_ram, crash_size, + crash_base, NULL); + if (!high) + return ret; + + return 0; } int __init parse_crashkernel_high(char *cmdline,
--
2.41.0
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