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authorAnton Blanchard <anton@samba.org>2006-01-07 00:49:49 +1100
committerPaul Mackerras <paulus@samba.org>2006-01-09 15:47:13 +1100
commit002ec58eb57bac2380f0ed5a4e88121b4bdb32ec (patch)
treef8ee3f3028e6c316b5e49f296b9283c1f79f42da
parentaed9c6ccb87d96c333bd6ae631d9e90f3b6d7271 (diff)
[PATCH] ppc64: fix time syscall
ppc64 has its own version of sys_time. It looks pretty scary, touching a whole bunch of variables without any locking or memory ordering. In fact, a recent bugreport has shown it can actually go backwards. Time to remove it and just use the generic sys_time, which is implemented on top of do_gettimeofday. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/kernel/syscalls.c28
-rw-r--r--arch/powerpc/kernel/systbl.S2
2 files changed, 1 insertions, 29 deletions
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index 91b93d917b6..ad895c99813 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -43,9 +43,6 @@
#include <asm/time.h>
#include <asm/unistd.h>
-extern unsigned long wall_jiffies;
-
-
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls..
*
@@ -311,31 +308,6 @@ int sys_olduname(struct oldold_utsname __user *name)
return error? -EFAULT: 0;
}
-#ifdef CONFIG_PPC64
-time_t sys64_time(time_t __user * tloc)
-{
- time_t secs;
- time_t usecs;
-
- long tb_delta = tb_ticks_since(tb_last_stamp);
- tb_delta += (jiffies - wall_jiffies) * tb_ticks_per_jiffy;
-
- secs = xtime.tv_sec;
- usecs = (xtime.tv_nsec/1000) + tb_delta / tb_ticks_per_usec;
- while (usecs >= USEC_PER_SEC) {
- ++secs;
- usecs -= USEC_PER_SEC;
- }
-
- if (tloc) {
- if (put_user(secs,tloc))
- secs = -EFAULT;
- }
-
- return secs;
-}
-#endif
-
long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
u32 len_high, u32 len_low)
{
diff --git a/arch/powerpc/kernel/systbl.S b/arch/powerpc/kernel/systbl.S
index 989f6286991..65463a1076e 100644
--- a/arch/powerpc/kernel/systbl.S
+++ b/arch/powerpc/kernel/systbl.S
@@ -54,7 +54,7 @@ SYSCALL(link)
SYSCALL(unlink)
COMPAT_SYS(execve)
SYSCALL(chdir)
-SYSX(sys64_time,compat_sys_time,sys_time)
+COMPAT_SYS(time)
SYSCALL(mknod)
SYSCALL(chmod)
SYSCALL(lchown)