No point in doing this all over the place.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
V2: Removed the timer_gettime() part - Frederic
---
kernel/time/posix-cpu-timers.c | 10 ++--------
kernel/time/posix-timers.c | 5 ++++-
2 files changed, 6 insertions(+), 9 deletions(-)
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -622,8 +622,8 @@ static int posix_cpu_timer_set(struct k_
{
bool sigev_none = timer->it_sigev_notify == SIGEV_NONE;
clockid_t clkid = CPUCLOCK_WHICH(timer->it_clock);
- u64 old_expires, new_expires, old_incr, now;
struct cpu_timer *ctmr = &timer->it.cpu;
+ u64 old_expires, new_expires, now;
struct sighand_struct *sighand;
struct task_struct *p;
unsigned long flags;
@@ -660,10 +660,7 @@ static int posix_cpu_timer_set(struct k_
return -ESRCH;
}
- /*
- * Disarm any old timer after extracting its expiry time.
- */
- old_incr = timer->it_interval;
+ /* Retrieve the current expiry time before disarming the timer */
old_expires = cpu_timer_getexpires(ctmr);
if (unlikely(timer->it.cpu.firing)) {
@@ -742,9 +739,6 @@ static int posix_cpu_timer_set(struct k_
cpu_timer_fire(timer);
out:
rcu_read_unlock();
- if (old)
- old->it_interval = ns_to_timespec64(old_incr);
-
return ret;
}
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -904,7 +904,7 @@ static int do_timer_settime(timer_t time
const struct k_clock *kc;
struct k_itimer *timr;
unsigned long flags;
- int error = 0;
+ int error;
if (!timespec64_valid(&new_spec64->it_interval) ||
!timespec64_valid(&new_spec64->it_value))
@@ -918,6 +918,9 @@ static int do_timer_settime(timer_t time
if (!timr)
return -EINVAL;
+ if (old_spec64)
+ old_spec64->it_interval = ktime_to_timespec64(timr->it_interval);
+
kc = timr->kclock;
if (WARN_ON_ONCE(!kc || !kc->timer_set))
error = -EINVAL;