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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-20 18:13:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-20 18:13:22 -0700
commite45836fafe157df137a837093037f741ad8f4c90 (patch)
treecba5fdef1fd2e70f3610c78dbcb56ebd1be67654
parent0d9cabdccedb79ee5f27b77ff51f29a9e7d23275 (diff)
parente06ffa1ede4146cbc261d90f5dff3d63fe2e9d7a (diff)
downloadop-kernel-dev-e45836fafe157df137a837093037f741ad8f4c90.zip
op-kernel-dev-e45836fafe157df137a837093037f741ad8f4c90.tar.gz
Merge branch 'for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue changes from Tejun Heo: "This contains only one commit which cleans up UP allocation path a bit." * 'for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: use percpu allocator for cwq on UP
-rw-r--r--kernel/workqueue.c22
1 files changed, 3 insertions, 19 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index f2c5638..5abf42f 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -476,13 +476,8 @@ static struct cpu_workqueue_struct *get_cwq(unsigned int cpu,
struct workqueue_struct *wq)
{
if (!(wq->flags & WQ_UNBOUND)) {
- if (likely(cpu < nr_cpu_ids)) {
-#ifdef CONFIG_SMP
+ if (likely(cpu < nr_cpu_ids))
return per_cpu_ptr(wq->cpu_wq.pcpu, cpu);
-#else
- return wq->cpu_wq.single;
-#endif
- }
} else if (likely(cpu == WORK_CPU_UNBOUND))
return wq->cpu_wq.single;
return NULL;
@@ -2899,13 +2894,8 @@ static int alloc_cwqs(struct workqueue_struct *wq)
const size_t size = sizeof(struct cpu_workqueue_struct);
const size_t align = max_t(size_t, 1 << WORK_STRUCT_FLAG_BITS,
__alignof__(unsigned long long));
-#ifdef CONFIG_SMP
- bool percpu = !(wq->flags & WQ_UNBOUND);
-#else
- bool percpu = false;
-#endif
- if (percpu)
+ if (!(wq->flags & WQ_UNBOUND))
wq->cpu_wq.pcpu = __alloc_percpu(size, align);
else {
void *ptr;
@@ -2929,13 +2919,7 @@ static int alloc_cwqs(struct workqueue_struct *wq)
static void free_cwqs(struct workqueue_struct *wq)
{
-#ifdef CONFIG_SMP
- bool percpu = !(wq->flags & WQ_UNBOUND);
-#else
- bool percpu = false;
-#endif
-
- if (percpu)
+ if (!(wq->flags & WQ_UNBOUND))
free_percpu(wq->cpu_wq.pcpu);
else if (wq->cpu_wq.single) {
/* the pointer to free is stored right after the cwq */
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