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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2019-08-26 07:27:35 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2019-08-26 08:23:36 +0200 |
| commit | c0dc524614461e3b730b14d136138f8b05faf4db (patch) | |
| tree | 57f44ddf1f9ccc30f04a9c3625ebdb6c15a4a8fa | |
| parent | media01: Enable event recording (diff) | |
| download | rtems-libbsd-c0dc524614461e3b730b14d136138f8b05faf4db.tar.bz2 | |
SLEEPQUEUE(9): Optimize sleepq_set_timeout_sbt()
Avoid an extra ISR disable/enable in SMP configurations.
| -rw-r--r-- | freebsd/sys/kern/subr_sleepqueue.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/freebsd/sys/kern/subr_sleepqueue.c b/freebsd/sys/kern/subr_sleepqueue.c index 537206fd..1a1044ec 100644 --- a/freebsd/sys/kern/subr_sleepqueue.c +++ b/freebsd/sys/kern/subr_sleepqueue.c @@ -465,12 +465,13 @@ sleepq_set_timeout_sbt(void *wchan, sbintime_t sbt, sbintime_t pr, sbintime_t sbt_per_tick; uint64_t expire; - cpu_self = _Thread_Dispatch_disable(); + _ISR_lock_ISR_disable(&lock_context); + cpu_self = _Thread_Dispatch_disable_critical(&lock_context); executing = _Per_CPU_Get_executing(cpu_self); BSD_ASSERT(_Watchdog_Get_state(&executing->Timer.Watchdog) == WATCHDOG_INACTIVE); - _ISR_lock_ISR_disable_and_acquire(&executing->Timer.Lock, &lock_context); + _ISR_lock_Acquire(&executing->Timer.Lock, &lock_context); header = &cpu_self->Watchdog.Header[PER_CPU_WATCHDOG_TICKS]; executing->Timer.header = header; |