stop_machine: Move local variable closer to the usage site in cpu_stop_cpu_callback()

This addresses the following compiler warning:

 kernel/stop_machine.c: In function 'cpu_stop_cpu_callback':
 kernel/stop_machine.c:297: warning: unused variable 'work'

Cc: Tejun Heo <tj@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <tip-3fc1f1e27a5b807791d72e5d992aa33b668a6626@git.kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index ef51d1f..b4e7431 100644 (file)
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -294,7 +294,6 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb,
        struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 };
        unsigned int cpu = (unsigned long)hcpu;
        struct cpu_stopper *stopper = &per_cpu(cpu_stopper, cpu);
-       struct cpu_stop_work *work;
        struct task_struct *p;
 
        switch (action & ~CPU_TASKS_FROZEN) {
@@ -323,6 +322,9 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb,
 #ifdef CONFIG_HOTPLUG_CPU
        case CPU_UP_CANCELED:
        case CPU_DEAD:
+       {
+               struct cpu_stop_work *work;
+
                /* kill the stopper */
                kthread_stop(stopper->thread);
                /* drain remaining works */
@@ -335,6 +337,7 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb,
                put_task_struct(stopper->thread);
                stopper->thread = NULL;
                break;
+       }
 #endif
        }