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authorAkinobu Mita <akinobu.mita@gmail.com>2010-10-26 14:22:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 16:52:15 -0700
commit4ce6494dbd8909718840bb88d5a699ef6ce5c212 (patch)
tree7803fc3f194969a736ae3a12b51e2cada7b98fbd /kernel
parentca51c5a76345b28c6f1b742f9f5f0a6fc9afd9ca (diff)
stop_machine: convert cpu notifier to return encapsulate errno value
In commit e6bde73b07edeb703d4c89c1daabc09c303de11f ("cpu-hotplug: return better errno on cpu hotplug failure"), the cpu notifier can return an encapsulated errno value. This converts the cpu notifier to return an encapsulated errno value for stop_machine(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/stop_machine.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 3cb4a9a8ae1c..2df820b03beb 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -304,7 +304,7 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb,
p = kthread_create(cpu_stopper_thread, stopper, "migration/%d",
cpu);
if (IS_ERR(p))
- return NOTIFY_BAD;
+ return notifier_from_errno(PTR_ERR(p));
get_task_struct(p);
kthread_bind(p, cpu);
sched_set_stop_task(cpu, p);
@@ -372,7 +372,7 @@ static int __init cpu_stop_init(void)
/* start one for the boot cpu */
err = cpu_stop_cpu_callback(&cpu_stop_cpu_notifier, CPU_UP_PREPARE,
bcpu);
- BUG_ON(err == NOTIFY_BAD);
+ BUG_ON(err != NOTIFY_OK);
cpu_stop_cpu_callback(&cpu_stop_cpu_notifier, CPU_ONLINE, bcpu);
register_cpu_notifier(&cpu_stop_cpu_notifier);

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