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[PATCH] list: use list_replace_init() instead of list_splice_init()

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list_splice_init(list, head) does unneeded job if it is known that
list_empty(head) == 1.  We can use list_replace_init() instead.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Oleg Nesterov 2006-06-23 02:05:55 -07:00 • committed by Linus Torvalds
parent 54e7377035
commit 626ab0e69d
7 changed files with 19 additions and 21 deletions
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4
kernel/workqueue.c
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@ -531,11 +531,11 @@ int current_is_keventd(void)
static void take_over_work(struct workqueue_struct *wq, unsigned int cpu)
{
struct cpu_workqueue_struct *cwq = per_cpu_ptr(wq->cpu_wq, cpu);
LIST_HEAD(list);
struct list_head list;
struct work_struct *work;
spin_lock_irq(&cwq->lock);
list_splice_init(&cwq->worklist, &list);
list_replace_init(&cwq->worklist, &list);
while (!list_empty(&list)) {
printk("Taking work for %s\n", wq->name);