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-rw-r--r--arch/mips/kernel/linux32.c17
-rw-r--r--arch/mips/kernel/scall32-o32.S2
-rw-r--r--arch/mips/kernel/scall64-64.S2
-rw-r--r--arch/mips/kernel/scall64-n32.S2
-rw-r--r--arch/mips/kernel/scall64-o32.S2
-rw-r--r--arch/mips/kernel/syscall.c9
6 files changed, 12 insertions, 22 deletions
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 65af3cc90ab..c266211ed65 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -129,23 +129,6 @@ out:
return error;
}
-
-asmlinkage int sys_truncate64(const char __user *path, unsigned int high,
- unsigned int low)
-{
- if ((int)high < 0)
- return -EINVAL;
- return sys_truncate(path, ((long) high << 32) | low);
-}
-
-asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high,
- unsigned int low)
-{
- if ((int)high < 0)
- return -EINVAL;
- return sys_ftruncate(fd, ((long) high << 32) | low);
-}
-
/*
* sys_execve() executes a new program.
*/
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index c058c0b61a2..fc4fd4d705e 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 dc597b600c6..2b73fd1e452 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 12940eca789..2654e75d2fe 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 9a275efb4f0..76167bea5a7 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 af1bdc89748..3523c8d12ed 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;