From 6ba1b91213e81aa92b5cf7539f7d2a94ff54947c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 9 Jan 2006 20:52:36 -0800 Subject: [PATCH] [PATCH] hrtimer: switch sys_nanosleep to hrtimer convert sys_nanosleep() to use hrtimer_nanosleep() Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/hrtimer.c | 14 ++++++++++++ kernel/timer.c | 56 ------------------------------------------------ 2 files changed, 14 insertions(+), 56 deletions(-) diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 64d37a3c5948..11fde0caee56 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -707,6 +707,20 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp, return -ERESTART_RESTARTBLOCK; } +asmlinkage long +sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp) +{ + struct timespec tu; + + if (copy_from_user(&tu, rqtp, sizeof(tu))) + return -EFAULT; + + if (!timespec_valid(&tu)) + return -EINVAL; + + return hrtimer_nanosleep(&tu, rmtp, HRTIMER_REL, CLOCK_MONOTONIC); +} + /* * Functions related to boot-time initialization: */ diff --git a/kernel/timer.c b/kernel/timer.c index 80bf2acf6b08..4f1cb0ab5251 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1120,62 +1120,6 @@ asmlinkage long sys_gettid(void) return current->pid; } -static long __sched nanosleep_restart(struct restart_block *restart) -{ - unsigned long expire = restart->arg0, now = jiffies; - struct timespec __user *rmtp = (struct timespec __user *) restart->arg1; - long ret; - - /* Did it expire while we handled signals? */ - if (!time_after(expire, now)) - return 0; - - expire = schedule_timeout_interruptible(expire - now); - - ret = 0; - if (expire) { - struct timespec t; - jiffies_to_timespec(expire, &t); - - ret = -ERESTART_RESTARTBLOCK; - if (rmtp && copy_to_user(rmtp, &t, sizeof(t))) - ret = -EFAULT; - /* The 'restart' block is already filled in */ - } - return ret; -} - -asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp) -{ - struct timespec t; - unsigned long expire; - long ret; - - if (copy_from_user(&t, rqtp, sizeof(t))) - return -EFAULT; - - if ((t.tv_nsec >= 1000000000L) || (t.tv_nsec < 0) || (t.tv_sec < 0)) - return -EINVAL; - - expire = timespec_to_jiffies(&t) + (t.tv_sec || t.tv_nsec); - expire = schedule_timeout_interruptible(expire); - - ret = 0; - if (expire) { - struct restart_block *restart; - jiffies_to_timespec(expire, &t); - if (rmtp && copy_to_user(rmtp, &t, sizeof(t))) - return -EFAULT; - - restart = ¤t_thread_info()->restart_block; - restart->fn = nanosleep_restart; - restart->arg0 = jiffies + expire; - restart->arg1 = (unsigned long) rmtp; - ret = -ERESTART_RESTARTBLOCK; - } - return ret; -} - /* * sys_sysinfo - fill in sysinfo struct */ -- 2.39.5