From 1711ef3866b0360e102327389fe4b76c849bbe83 Mon Sep 17 00:00:00 2001 From: Toyo Abe Date: Fri, 29 Sep 2006 02:00:28 -0700 Subject: [PATCH] posix-timers: Fix clock_nanosleep() doesn't return the remaining time in compatibility mode The clock_nanosleep() function does not return the time remaining when the sleep is interrupted by a signal. This patch creates a new call out, compat_clock_nanosleep_restart(), which handles returning the remaining time after a sleep is interrupted. This patch revives clock_nanosleep_restart(). It is now accessed via the new call out. The compat_clock_nanosleep_restart() is used for compatibility access. Since this is implemented in compatibility mode the normal path is virtually unaffected - no real performance impact. Signed-off-by: Toyo Abe Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Roland McGrath Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/hrtimer.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'kernel/hrtimer.c') diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 21c38a7e666..d0ba190dfeb 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -693,7 +693,7 @@ static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mod return t->task == NULL; } -static long __sched nanosleep_restart(struct restart_block *restart) +long __sched hrtimer_nanosleep_restart(struct restart_block *restart) { struct hrtimer_sleeper t; struct timespec __user *rmtp; @@ -702,13 +702,13 @@ static long __sched nanosleep_restart(struct restart_block *restart) restart->fn = do_no_restart_syscall; - hrtimer_init(&t.timer, restart->arg3, HRTIMER_ABS); - t.timer.expires.tv64 = ((u64)restart->arg1 << 32) | (u64) restart->arg0; + hrtimer_init(&t.timer, restart->arg0, HRTIMER_ABS); + t.timer.expires.tv64 = ((u64)restart->arg3 << 32) | (u64) restart->arg2; if (do_nanosleep(&t, HRTIMER_ABS)) return 0; - rmtp = (struct timespec __user *) restart->arg2; + rmtp = (struct timespec __user *) restart->arg1; if (rmtp) { time = ktime_sub(t.timer.expires, t.timer.base->get_time()); if (time.tv64 <= 0) @@ -718,7 +718,7 @@ static long __sched nanosleep_restart(struct restart_block *restart) return -EFAULT; } - restart->fn = nanosleep_restart; + restart->fn = hrtimer_nanosleep_restart; /* The other values in restart are already filled in */ return -ERESTART_RESTARTBLOCK; @@ -751,11 +751,11 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp, } restart = ¤t_thread_info()->restart_block; - restart->fn = nanosleep_restart; - restart->arg0 = t.timer.expires.tv64 & 0xFFFFFFFF; - restart->arg1 = t.timer.expires.tv64 >> 32; - restart->arg2 = (unsigned long) rmtp; - restart->arg3 = (unsigned long) t.timer.base->index; + restart->fn = hrtimer_nanosleep_restart; + restart->arg0 = (unsigned long) t.timer.base->index; + restart->arg1 = (unsigned long) rmtp; + restart->arg2 = t.timer.expires.tv64 & 0xFFFFFFFF; + restart->arg3 = t.timer.expires.tv64 >> 32; return -ERESTART_RESTARTBLOCK; } -- cgit v1.2.3