From ecb49d1a639acbacfc3771cae5ec07bed5df3847 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 17 Nov 2009 16:36:54 +0100 Subject: hrtimers: Convert to raw_spinlocks Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks. Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Acked-by: Ingo Molnar --- kernel/time/timer_list.c | 6 +++--- kernel/time/timer_stats.c | 17 +++++++++-------- 2 files changed, 12 insertions(+), 11 deletions(-) (limited to 'kernel/time') diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c index 9d80db4747d..28265636b6c 100644 --- a/kernel/time/timer_list.c +++ b/kernel/time/timer_list.c @@ -84,7 +84,7 @@ print_active_timers(struct seq_file *m, struct hrtimer_clock_base *base, next_one: i = 0; - spin_lock_irqsave(&base->cpu_base->lock, flags); + raw_spin_lock_irqsave(&base->cpu_base->lock, flags); curr = base->first; /* @@ -100,13 +100,13 @@ next_one: timer = rb_entry(curr, struct hrtimer, node); tmp = *timer; - spin_unlock_irqrestore(&base->cpu_base->lock, flags); + raw_spin_unlock_irqrestore(&base->cpu_base->lock, flags); print_timer(m, timer, &tmp, i, now); next++; goto next_one; } - spin_unlock_irqrestore(&base->cpu_base->lock, flags); + raw_spin_unlock_irqrestore(&base->cpu_base->lock, flags); } static void diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c index 63b117e9eba..2f3b585b8d7 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) -- cgit v1.2.3-70-g09d2