diff options
Diffstat (limited to 'kernel/cpu.c')
-rw-r--r-- | kernel/cpu.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index c77bc3a1c722..787d3f4f7a63 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -192,7 +192,6 @@ static int __ref take_cpu_down(void *_param) static int __ref _cpu_down(unsigned int cpu, int tasks_frozen) { int err, nr_calls = 0; - struct task_struct *p; cpumask_t old_allowed, tmp; void *hcpu = (void *)(long)cpu; unsigned long mod = tasks_frozen ? CPU_TASKS_FROZEN : 0; @@ -226,19 +225,15 @@ static int __ref _cpu_down(unsigned int cpu, int tasks_frozen) cpu_clear(cpu, tmp); set_cpus_allowed_ptr(current, &tmp); - p = __stop_machine_run(take_cpu_down, &tcd_param, cpu); + err = __stop_machine_run(take_cpu_down, &tcd_param, cpu); - if (IS_ERR(p) || cpu_online(cpu)) { + if (err || cpu_online(cpu)) { /* CPU didn't die: tell everyone. Can't complain. */ if (raw_notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED | mod, hcpu) == NOTIFY_BAD) BUG(); - if (IS_ERR(p)) { - err = PTR_ERR(p); - goto out_allowed; - } - goto out_thread; + goto out_allowed; } /* Wait for it to sleep (leaving idle task). */ @@ -255,8 +250,6 @@ static int __ref _cpu_down(unsigned int cpu, int tasks_frozen) check_for_tasks(cpu); -out_thread: - err = kthread_stop(p); out_allowed: set_cpus_allowed_ptr(current, &old_allowed); out_release: @@ -277,6 +270,7 @@ int __ref cpu_down(unsigned int cpu) cpu_maps_update_done(); return err; } +EXPORT_SYMBOL(cpu_down); #endif /*CONFIG_HOTPLUG_CPU*/ /* Requires cpu_add_remove_lock to be held */ |