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| author | Firoz Khan <firoz.khan@linaro.org> | 2018-11-13 09:00:27 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2018-12-04 11:47:48 +0300 |
| commit | d2cc708775f89e5ae12e00c026136828c20298f5 (patch) | |
| tree | 142147b0892ec291fd57c94ed03e04f8b94d31ce /arch/m68k/include | |
| parent | 616d4cf8ea1c370198f548a7e84f1fe90b09921b (diff) | |
| download | linux-d2cc708775f89e5ae12e00c026136828c20298f5.tar.xz | |
m68k: Add __NR_syscalls along with NR_syscalls
NR_syscalls macro holds the number of system call
exist in m68k 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
counting the no.of system calls. No need to up-
date NR_syscalls until we either add a new sys-
tem call or delete existing system call.
2. We can keep this feature it above mentioned sc-
ript, that will count the number of syscalls and
keep it in a generated file. In this case we
don't need to explicitly update NR_syscalls in
asm/unistd.h file.
The 2nd option will be the recommended one. For that,
I added the __NR_syscalls macro in uapi/asm/unistd.h
along with NR_syscalls asm/unistd.h. The macro __NR-
_syscalls also added for making the name convention
same across all architecture. While __NR_syscalls
isn't strictly part of the uapi, having it as part
of the generated header to simplifies the implement-
ation. 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: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/include')
| -rw-r--r-- | arch/m68k/include/asm/unistd.h | 3 | ||||
| -rw-r--r-- | arch/m68k/include/uapi/asm/unistd.h | 4 |
2 files changed, 5 insertions, 2 deletions
diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h index e680031bda7b..49d5de18646b 100644 --- a/arch/m68k/include/asm/unistd.h +++ b/arch/m68k/include/asm/unistd.h @@ -4,8 +4,7 @@ #include <uapi/asm/unistd.h> - -#define NR_syscalls 380 +#define NR_syscalls __NR_syscalls #define __ARCH_WANT_NEW_STAT #define __ARCH_WANT_OLD_READDIR diff --git a/arch/m68k/include/uapi/asm/unistd.h b/arch/m68k/include/uapi/asm/unistd.h index de3054f8a681..ba4176aa6efc 100644 --- a/arch/m68k/include/uapi/asm/unistd.h +++ b/arch/m68k/include/uapi/asm/unistd.h @@ -387,4 +387,8 @@ #define __NR_pwritev2 378 #define __NR_statx 379 +#ifdef __KERNEL__ +#define __NR_syscalls 380 +#endif + #endif /* _UAPI_ASM_M68K_UNISTD_H_ */ |