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-rw-r--r--kernel/hrtimer.c14
-rw-r--r--kernel/timer.c56
2 files changed, 14 insertions, 56 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 64d37a3..11fde0c 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 80bf2ac..4f1cb0a 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 = &current_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
*/
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