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| author | Firoz Khan <firoz.khan@linaro.org> | 2018-11-13 09:04:32 +0300 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2018-11-16 10:24:33 +0300 |
| commit | c0b2826aa02a0747c3016457b9c1917ba14d0655 (patch) | |
| tree | a33ff2dd5af44077fcfcb1755dc90688cd84109e /arch/microblaze/include/uapi | |
| parent | 68a385c6c75090798996db42d440db119056a10d (diff) | |
| download | linux-c0b2826aa02a0747c3016457b9c1917ba14d0655.tar.xz | |
microblaze: move __NR_syscalls macro from asm/unistd.h
__NR_syscalls holds the number of system call exist in
microblaze architecture. We have to change the value of
__NR_syscalls, if we add or delete a system call.
One of the patch in this patch series has a script which
will generate a uapi header based on syscall.tbl file.
The syscall.tbl file contains the total number of system
calls information. So we have two option to update __NR-
_syscalls value.
1. Update __NR_syscalls in asm/unistd.h manually by count-
ing the no.of system calls. No need to update NR_sys-
calls until we either add a new system call or delete
existing system call.
2. We can keep this feature it above mentioned script,
that will count the number of syscalls and keep it in
a generated file. In this case we don't need to expli-
citly update __NR_syscalls in asm/unistd.h file.
The 2nd option will be the recommended one. For that, I
moved the __NR_syscalls macro from asm/unistd.h to uapi-
/asm/unistd.h. While __NR_syscalls isn't strictly part of
the uapi, having it as part of the generated header to
simplifies the implementation. We also need to enclose
this macro with #ifdef __KERNEL__ to avoid side effects.
Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/microblaze/include/uapi')
| -rw-r--r-- | arch/microblaze/include/uapi/asm/unistd.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/microblaze/include/uapi/asm/unistd.h b/arch/microblaze/include/uapi/asm/unistd.h index 7a9f16a76413..1c3f867b6448 100644 --- a/arch/microblaze/include/uapi/asm/unistd.h +++ b/arch/microblaze/include/uapi/asm/unistd.h @@ -418,4 +418,8 @@ #define __NR_io_pgetevents 399 #define __NR_rseq 400 +#ifdef __KERNEL__ +#define __NR_syscalls 401 +#endif + #endif /* _UAPI_ASM_MICROBLAZE_UNISTD_H */ |