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| author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2012-03-09 18:03:20 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-03-12 09:21:17 -0700 |
| commit | e06ffa1ede4146cbc261d90f5dff3d63fe2e9d7a (patch) | |
| tree | 3d8a7bccc95926aeb08c1b03e1ea8cffe722d38c /kernel/workqueue.c | |
| parent | fde7d9049e55ab85a390be7f415d74c9f62dd0f9 (diff) | |
| download | lwn-e06ffa1ede4146cbc261d90f5dff3d63fe2e9d7a.tar.gz lwn-e06ffa1ede4146cbc261d90f5dff3d63fe2e9d7a.zip | |
workqueue: use percpu allocator for cwq on UP
I notice that the commit bbddff makes percpu allocator can work on UP,
So we don't need the magic way for UP.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/workqueue.c')
| -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 bec7b5b53e03..5bbba094bfac 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -474,13 +474,8 @@ 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; @@ -2897,13 +2892,8 @@ 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; @@ -2927,13 +2917,7 @@ 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 */ |