| From | Thomas Gleixner <> | Subject | [patch V2 17/50] posix-timers: Retrieve interval in common timer_settime() code | Date | Thu, 11 Apr 2024 00:46:41 +0200 (CEST) |
| |
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;
|