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| author | Thomas Gleixner <tglx@linutronix.de> | 2009-11-17 16:36:54 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2009-12-14 23:55:34 +0100 |
| commit | ecb49d1a639acbacfc3771cae5ec07bed5df3847 (patch) | |
| tree | 19c8fa91d1f9b1c965cd60653e16d1eb60cd9d3a /kernel/time/timer_stats.c | |
| parent | 239007b8440abff689632f50cdf0f2b9e895b534 (diff) | |
| download | linux-ecb49d1a639acbacfc3771cae5ec07bed5df3847.tar.gz linux-ecb49d1a639acbacfc3771cae5ec07bed5df3847.tar.bz2 linux-ecb49d1a639acbacfc3771cae5ec07bed5df3847.zip | |
hrtimers: Convert to raw_spinlocks
Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time/timer_stats.c')
| -rw-r--r-- | kernel/time/timer_stats.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c index 63b117e9eba1..2f3b585b8d7d 100644 --- a/kernel/time/timer_stats.c +++ b/kernel/time/timer_stats.c @@ -86,7 +86,7 @@ static DEFINE_SPINLOCK(table_lock); /* * Per-CPU lookup locks for fast hash lookup: */ -static DEFINE_PER_CPU(spinlock_t, tstats_lookup_lock); +static DEFINE_PER_CPU(raw_spinlock_t, tstats_lookup_lock); /* * Mutex to serialize state changes with show-stats activities: @@ -238,7 +238,7 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf, /* * It doesnt matter which lock we take: */ - spinlock_t *lock; + raw_spinlock_t *lock; struct entry *entry, input; unsigned long flags; @@ -253,7 +253,7 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf, input.pid = pid; input.timer_flag = timer_flag; - spin_lock_irqsave(lock, flags); + raw_spin_lock_irqsave(lock, flags); if (!timer_stats_active) goto out_unlock; @@ -264,7 +264,7 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf, atomic_inc(&overflow_count); out_unlock: - spin_unlock_irqrestore(lock, flags); + raw_spin_unlock_irqrestore(lock, flags); } static void print_name_offset(struct seq_file *m, unsigned long addr) @@ -348,10 +348,11 @@ static void sync_access(void) int cpu; for_each_online_cpu(cpu) { - spinlock_t *lock = &per_cpu(tstats_lookup_lock, cpu); - spin_lock_irqsave(lock, flags); + raw_spinlock_t *lock = &per_cpu(tstats_lookup_lock, cpu); + + raw_spin_lock_irqsave(lock, flags); /* nothing */ - spin_unlock_irqrestore(lock, flags); + raw_spin_unlock_irqrestore(lock, flags); } } @@ -409,7 +410,7 @@ void __init init_timer_stats(void) int cpu; for_each_possible_cpu(cpu) - spin_lock_init(&per_cpu(tstats_lookup_lock, cpu)); + raw_spin_lock_init(&per_cpu(tstats_lookup_lock, cpu)); } static int __init init_tstats_procfs(void) |