This patch splits out the guts of the timer_gettime syscall and changes the
timer_gettime syscall implementation to prepare the converting to 64bit methods
for the timer_gettime syscall function in posix-timers.c file.
Signed-off-by: Baolin Wang <baolin.w...@linaro.org>
---
kernel/time/posix-timers.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 31ea01f..9df664a 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -766,11 +766,8 @@ common_timer_get(struct k_itimer *timr, struct itimerspec
*cur_setting)
cur_setting->it_value = ktime_to_timespec(remaining);
}
-/* Get the time remaining on a POSIX.1b interval timer. */
-SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
- struct itimerspec __user *, setting)
+static int __timer_gettime(timer_t timer_id, struct itimerspec *cur_setting)
{
- struct itimerspec cur_setting;
struct k_itimer *timr;
struct k_clock *kc;
unsigned long flags;
@@ -784,9 +781,18 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
if (WARN_ON_ONCE(!kc || !kc->timer_get))
ret = -EINVAL;
else
- kc->timer_get(timr, &cur_setting);
+ kc->timer_get(timr, cur_setting);
unlock_timer(timr, flags);
+ return ret;
+}
+
+/* Get the time remaining on a POSIX.1b interval timer. */
+SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
+ struct itimerspec __user *, setting)
+{
+ struct itimerspec cur_setting;
+ int ret = __timer_gettime(timer_id, &cur_setting);
if (!ret && copy_to_user(setting, &cur_setting, sizeof (cur_setting)))
return -EFAULT;
--
1.7.9.5
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