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>
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index bec7b5b..5bbba09 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -474,13 +474,8 @@
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 @@
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 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 */
