diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2008-07-20 13:16:46 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-07-20 14:38:21 +0100 |
| commit | 8213bbf9c1c0009872a3278aa7a83ec8f3508195 (patch) | |
| tree | 1fd6d8e006f2ddd9bcc7396eab092a12dc16eace | |
| parent | 4914ad4a9f2d484a68422700ba8493db73c7c411 (diff) | |
| download | op-kernel-dev-8213bbf9c1c0009872a3278aa7a83ec8f3508195.zip op-kernel-dev-8213bbf9c1c0009872a3278aa7a83ec8f3508195.tar.gz | |
[MIPS] Rename MIPS sys_pipe syscall entry point to something MIPS-specific.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/kernel/scall32-o32.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-64.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-n32.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-o32.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/syscall.c | 9 |
5 files changed, 12 insertions, 5 deletions
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index c058c0b..fc4fd4d 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -354,7 +354,7 @@ einval: li v0, -EINVAL sys sys_mkdir 2 sys sys_rmdir 1 /* 4040 */ sys sys_dup 1 - sys sys_pipe 0 + sys sysm_pipe 0 sys sys_times 1 sys sys_ni_syscall 0 sys sys_brk 1 /* 4045 */ diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index dc597b6..2b73fd1 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -219,7 +219,7 @@ sys_call_table: PTR sys_readv PTR sys_writev PTR sys_access /* 5020 */ - PTR sys_pipe + PTR sysm_pipe PTR sys_select PTR sys_sched_yield PTR sys_mremap diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 12940ec..2654e75 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -141,7 +141,7 @@ EXPORT(sysn32_call_table) PTR compat_sys_readv PTR compat_sys_writev PTR sys_access /* 6020 */ - PTR sys_pipe + PTR sysm_pipe PTR compat_sys_select PTR sys_sched_yield PTR sys_mremap diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 9a275ef..76167be 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -247,7 +247,7 @@ sys_call_table: PTR sys_mkdir PTR sys_rmdir /* 4040 */ PTR sys_dup - PTR sys_pipe + PTR sysm_pipe PTR compat_sys_times PTR sys_ni_syscall PTR sys_brk /* 4045 */ diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c index af1bdc8..3523c8d 100644 --- a/arch/mips/kernel/syscall.c +++ b/arch/mips/kernel/syscall.c @@ -40,7 +40,14 @@ #include <asm/sysmips.h> #include <asm/uaccess.h> -asmlinkage int sys_pipe(nabi_no_regargs volatile struct pt_regs regs) +/* + * For historic reasons the pipe(2) syscall on MIPS has an unusual calling + * convention. It returns results in registers $v0 / $v1 which means there + * is no need for it to do verify the validity of a userspace pointer + * argument. Historically that used to be expensive in Linux. These days + * the performance advantage is negligible. + */ +asmlinkage int sysm_pipe(nabi_no_regargs volatile struct pt_regs regs) { int fd[2]; int error, res; |
