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kernel/: convert cpu notifier to return encapsulate errno value

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By the previous modification, the cpu notifier can return encapsulate
errno value.  This converts the cpu notifiers for kernel/*.c

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2010-05-26 14:43:32 -07:00 • committed by Linus Torvalds
parent ad84bb5b98
commit 80b5184cc5
7 changed files with 17 additions and 13 deletions
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9
kernel/workqueue.c
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@ -1110,7 +1110,7 @@ static int __devinit workqueue_cpu_callback(struct notifier_block *nfb,
unsigned int cpu = (unsigned long)hcpu;
struct cpu_workqueue_struct *cwq;
struct workqueue_struct *wq;
int ret = NOTIFY_OK;
int err = 0;
action &= ~CPU_TASKS_FROZEN;
@ -1124,12 +1124,13 @@ undo:
switch (action) {
case CPU_UP_PREPARE:
if (!create_workqueue_thread(cwq, cpu))
err = create_workqueue_thread(cwq, cpu);
if (!err)
break;
printk(KERN_ERR "workqueue [%s] for %i failed\n",
wq->name, cpu);
action = CPU_UP_CANCELED;
ret = NOTIFY_BAD;
err = -ENOMEM;
goto undo;
case CPU_ONLINE:
@ -1150,7 +1151,7 @@ undo:
cpumask_clear_cpu(cpu, cpu_populated_map);
}
return ret;
return notifier_from_errno(err);
}
#ifdef CONFIG_SMP