diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2007-02-16 12:27:52 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-16 19:13:58 +0300 |
| commit | 5cfb6de7cd7c8f04655c9d23533ca506647beace (patch) | |
| tree | 43a43dc7eb95d28befe233080b42a5aceeee5032 | |
| parent | 303e967ff90a9d19ad3f8c9028ccbfa7f408fbb3 (diff) | |
| download | linux-5cfb6de7cd7c8f04655c9d23533ca506647beace.tar.xz | |
[PATCH] hrtimers: clean up callback tracking
Reintroduce ktimers feature "optimized away" by the ktimers review process:
remove the curr_timer pointer from the cpu-base and use the hrtimer state.
No functional changes.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/hrtimer.h | 1 | ||||
| -rw-r--r-- | kernel/hrtimer.c | 10 |
2 files changed, 1 insertions, 10 deletions
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index d8cdac2d28d6..9041405d0b71 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -136,7 +136,6 @@ struct hrtimer_cpu_base { spinlock_t lock; struct lock_class_key lock_key; struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES]; - struct hrtimer *curr_timer; }; /* diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index fee18b27252f..eca0f5593a75 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -172,8 +172,6 @@ static inline int hrtimer_callback_running(struct hrtimer *timer) */ #ifdef CONFIG_SMP -#define set_curr_timer(b, t) do { (b)->curr_timer = (t); } while (0) - /* * We are using hashed locking: holding per_cpu(hrtimer_bases)[n].lock * means that all timers which are tied to this base via timer->base are @@ -227,7 +225,7 @@ switch_hrtimer_base(struct hrtimer *timer, struct hrtimer_clock_base *base) * completed. There is no conflict as we hold the lock until * the timer is enqueued. */ - if (unlikely(base->cpu_base->curr_timer == timer)) + if (unlikely(timer->state & HRTIMER_STATE_CALLBACK)) return base; /* See the comment in lock_timer_base() */ @@ -241,8 +239,6 @@ switch_hrtimer_base(struct hrtimer *timer, struct hrtimer_clock_base *base) #else /* CONFIG_SMP */ -#define set_curr_timer(b, t) do { } while (0) - static inline struct hrtimer_clock_base * lock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags) { @@ -670,7 +666,6 @@ static inline void run_hrtimer_queue(struct hrtimer_cpu_base *cpu_base, break; fn = timer->function; - set_curr_timer(cpu_base, timer); __remove_hrtimer(timer, base, HRTIMER_STATE_CALLBACK); spin_unlock_irq(&cpu_base->lock); @@ -684,7 +679,6 @@ static inline void run_hrtimer_queue(struct hrtimer_cpu_base *cpu_base, enqueue_hrtimer(timer, base); } } - set_curr_timer(cpu_base, NULL); spin_unlock_irq(&cpu_base->lock); } @@ -871,8 +865,6 @@ static void migrate_hrtimers(int cpu) spin_lock(&old_base->lock); for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) { - BUG_ON(old_base->curr_timer); - migrate_hrtimer_list(&old_base->clock_base[i], &new_base->clock_base[i]); } |