Hi Arnd,

On Tue, Feb 19, 2019 at 3:34 AM Arnd Bergmann [off-list ref] wrote:

We don't want new architectures to even provide the old 32-bit time_t
based system calls any more, or define the syscall number macros.

Add a new __ARCH_WANT_TIME32_SYSCALLS macro that gets enabled for all
existing 32-bit architectures so we don't change any current behavior.

... (only) 32-bit architectures using the generic syscall list, right?

Since this symbol is evaluated in user space as well, we cannot use
a Kconfig CONFIG_* macro but have to define it in uapi/asm/unistd.h.

On 64-bit architectures, the same system call numbers mostly refer to
the system calls we want to keep, as they already pass 64-bit time_t.

As new architectures no longer provide these, we need new exceptions
in checksyscalls.sh.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arc/include/uapi/asm/unistd.h       |  1 +
 arch/arm64/include/uapi/asm/unistd.h     |  1 +
 arch/c6x/include/uapi/asm/unistd.h       |  1 +
 arch/csky/include/uapi/asm/unistd.h      |  1 +
 arch/h8300/include/uapi/asm/unistd.h     |  1 +
 arch/hexagon/include/uapi/asm/unistd.h   |  1 +
 arch/nds32/include/uapi/asm/unistd.h     |  1 +
 arch/nios2/include/uapi/asm/unistd.h     |  1 +
 arch/openrisc/include/uapi/asm/unistd.h  |  1 +
 arch/riscv/include/uapi/asm/unistd.h     |  3 ++
 arch/unicore32/include/uapi/asm/unistd.h |  1 +
 include/uapi/asm-generic/unistd.h        | 36 ++++++++++++++++++++++++
 scripts/checksyscalls.sh                 |  7 +++++
 13 files changed, 56 insertions(+)

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
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