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| author |   Firoz Khan <firoz.khan@linaro.org> | 2018-11-14 10:56:29 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-11-18 18:52:22 -0800 |
| commit | 61257f56ada73302cce7da4887921fa634279865 (patch) | |
| tree | c111077f4efe352e30fab1b5eb576235ad79342d /arch/sparc | |
| parent | sparc: move __IGNORE* entries to non uapi header (diff) | |
| download | linux-dev-61257f56ada73302cce7da4887921fa634279865.tar.xz linux-dev-61257f56ada73302cce7da4887921fa634279865.zip | |
sparc: add __NR_syscalls along with NR_syscalls
NR_syscalls macro holds the number of system call exist
in sparc 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_sy-
scalls 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
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 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: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/asm/unistd.h | 2 | ||||
| -rw-r--r-- | arch/sparc/include/uapi/asm/unistd.h | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index 73d245478cce..5194d86ef72d 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -17,6 +17,8 @@ #include <uapi/asm/unistd.h> +#define NR_syscalls __NR_syscalls + #ifdef __32bit_syscall_numbers__ #else #define __NR_time 231 /* Linux sparc32 */ diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h index d37a1367c23d..4ae11c45981c 100644 --- a/arch/sparc/include/uapi/asm/unistd.h +++ b/arch/sparc/include/uapi/asm/unistd.h @@ -429,7 +429,9 @@ #define __NR_statx 360 #define __NR_io_pgetevents 361 -#define NR_syscalls 362 +#ifdef __KERNEL__ +#define __NR_syscalls 362 +#endif /* Bitmask values returned from kern_features system call. */ #define KERN_FEATURE_MIXED_MODE_STACK 0x00000001 |