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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-20 18:13:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-20 18:13:22 -0700 |
| commit | e45836fafe157df137a837093037f741ad8f4c90 (patch) | |
| tree | cba5fdef1fd2e70f3610c78dbcb56ebd1be67654 /kernel | |
| parent | 0d9cabdccedb79ee5f27b77ff51f29a9e7d23275 (diff) | |
| parent | e06ffa1ede4146cbc261d90f5dff3d63fe2e9d7a (diff) | |
| download | kernel-common-e45836fafe157df137a837093037f741ad8f4c90.tar.gz kernel-common-e45836fafe157df137a837093037f741ad8f4c90.tar.bz2 kernel-common-e45836fafe157df137a837093037f741ad8f4c90.zip | |
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
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/workqueue.c | 22 |
1 files changed, 3 insertions, 19 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index f2c5638bb5ab..5abf42f63c08 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 */ |