diff options
Diffstat (limited to 'kernel/time/hrtimer.c')
-rw-r--r-- | kernel/time/hrtimer.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index cfcf8decf102..e56805fe5d00 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -70,7 +70,6 @@ DEFINE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases) = { .lock = __RAW_SPIN_LOCK_UNLOCKED(hrtimer_bases.lock), - .seq = SEQCNT_ZERO(hrtimer_bases.seq), .clock_base = { { @@ -118,7 +117,6 @@ static const int hrtimer_clock_to_base_table[MAX_CLOCKS] = { * timer->base->cpu_base */ static struct hrtimer_cpu_base migration_cpu_base = { - .seq = SEQCNT_ZERO(migration_cpu_base), .clock_base = { { .cpu_base = &migration_cpu_base, }, }, }; @@ -1148,19 +1146,19 @@ EXPORT_SYMBOL_GPL(hrtimer_init); */ bool hrtimer_active(const struct hrtimer *timer) { - struct hrtimer_cpu_base *cpu_base; + struct hrtimer_clock_base *base; unsigned int seq; do { - cpu_base = READ_ONCE(timer->base->cpu_base); - seq = raw_read_seqcount_begin(&cpu_base->seq); + base = READ_ONCE(timer->base); + seq = raw_read_seqcount_begin(&base->seq); if (timer->state != HRTIMER_STATE_INACTIVE || - cpu_base->running == timer) + base->running == timer) return true; - } while (read_seqcount_retry(&cpu_base->seq, seq) || - cpu_base != READ_ONCE(timer->base->cpu_base)); + } while (read_seqcount_retry(&base->seq, seq) || + base != READ_ONCE(timer->base)); return false; } @@ -1194,16 +1192,16 @@ static void __run_hrtimer(struct hrtimer_cpu_base *cpu_base, lockdep_assert_held(&cpu_base->lock); debug_deactivate(timer); - cpu_base->running = timer; + base->running = timer; /* * Separate the ->running assignment from the ->state assignment. * * As with a regular write barrier, this ensures the read side in - * hrtimer_active() cannot observe cpu_base->running == NULL && + * hrtimer_active() cannot observe base->running == NULL && * timer->state == INACTIVE. */ - raw_write_seqcount_barrier(&cpu_base->seq); + raw_write_seqcount_barrier(&base->seq); __remove_hrtimer(timer, base, HRTIMER_STATE_INACTIVE, 0); fn = timer->function; @@ -1244,13 +1242,13 @@ static void __run_hrtimer(struct hrtimer_cpu_base *cpu_base, * Separate the ->running assignment from the ->state assignment. * * As with a regular write barrier, this ensures the read side in - * hrtimer_active() cannot observe cpu_base->running == NULL && + * hrtimer_active() cannot observe base->running.timer == NULL && * timer->state == INACTIVE. */ - raw_write_seqcount_barrier(&cpu_base->seq); + raw_write_seqcount_barrier(&base->seq); - WARN_ON_ONCE(cpu_base->running != timer); - cpu_base->running = NULL; + WARN_ON_ONCE(base->running != timer); + base->running = NULL; } static void __hrtimer_run_queues(struct hrtimer_cpu_base *cpu_base, ktime_t now) |