Commit-ID: fe841226bd954fba4fd79f037a876053fe9c3217
Gitweb: http://git.kernel.org/tip/fe841226bd954fba4fd79f037a876053fe9c3217
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Tue, 17 Nov 2009 17:59:15 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 14 Dec 2009 23:55:33 +0100
sched: Convert cpupri lock to raw_spinlock
Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Acked-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
---
kernel/sched_cpupri.c | 10 +++++-----
kernel/sched_cpupri.h | 2 +-
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c
index 0f052fc..597b330 100644
--- a/kernel/sched_cpupri.c
+++ b/kernel/sched_cpupri.c
@@ -135,26 +135,26 @@ void cpupri_set(struct cpupri *cp, int cpu, int newpri)
if (likely(newpri != CPUPRI_INVALID)) {
struct cpupri_vec *vec = &cp->pri_to_cpu[newpri];
- spin_lock_irqsave(&vec->lock, flags);
+ raw_spin_lock_irqsave(&vec->lock, flags);
cpumask_set_cpu(cpu, vec->mask);
vec->count++;
if (vec->count == 1)
set_bit(newpri, cp->pri_active);
- spin_unlock_irqrestore(&vec->lock, flags);
+ raw_spin_unlock_irqrestore(&vec->lock, flags);
}
if (likely(oldpri != CPUPRI_INVALID)) {
struct cpupri_vec *vec = &cp->pri_to_cpu[oldpri];
- spin_lock_irqsave(&vec->lock, flags);
+ raw_spin_lock_irqsave(&vec->lock, flags);
vec->count--;
if (!vec->count)
clear_bit(oldpri, cp->pri_active);
cpumask_clear_cpu(cpu, vec->mask);
- spin_unlock_irqrestore(&vec->lock, flags);
+ raw_spin_unlock_irqrestore(&vec->lock, flags);
}
*currpri = newpri;
@@ -180,7 +180,7 @@ int cpupri_init(struct cpupri *cp, bool bootmem)
for (i = 0; i < CPUPRI_NR_PRIORITIES; i++) {
struct cpupri_vec *vec = &cp->pri_to_cpu[i];
- spin_lock_init(&vec->lock);
+ raw_spin_lock_init(&vec->lock);
vec->count = 0;
if (!zalloc_cpumask_var(&vec->mask, gfp))
goto cleanup;
diff --git a/kernel/sched_cpupri.h b/kernel/sched_cpupri.h
index 9a7e859..7cb5bb6 100644
--- a/kernel/sched_cpupri.h
+++ b/kernel/sched_cpupri.h
@@ -12,7 +12,7 @@
/* values 2-101 are RT priorities 0-99 */
struct cpupri_vec {
- spinlock_t lock;
+ raw_spinlock_t lock;
int count;
cpumask_var_t mask;
};
--
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