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-rw-r--r--kernel/kthread.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 96cff2f..8e7a7ce 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -13,6 +13,7 @@
#include <linux/file.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <trace/sched.h>
#define KTHREAD_NICE_LEVEL (-5)
@@ -171,12 +172,11 @@ EXPORT_SYMBOL(kthread_create);
*/
void kthread_bind(struct task_struct *k, unsigned int cpu)
{
- if (k->state != TASK_UNINTERRUPTIBLE) {
+ /* Must have done schedule() in kthread() before we set_task_cpu */
+ if (!wait_task_inactive(k, TASK_UNINTERRUPTIBLE)) {
WARN_ON(1);
return;
}
- /* Must have done schedule() in kthread() before we set_task_cpu */
- wait_task_inactive(k, 0);
set_task_cpu(k, cpu);
k->cpus_allowed = cpumask_of_cpu(cpu);
k->rt.nr_cpus_allowed = 1;
@@ -206,6 +206,8 @@ int kthread_stop(struct task_struct *k)
/* It could exit after stop_info.k set, but before wake_up_process. */
get_task_struct(k);
+ trace_sched_kthread_stop(k);
+
/* Must init completion *before* thread sees kthread_stop_info.k */
init_completion(&kthread_stop_info.done);
smp_wmb();
@@ -221,6 +223,8 @@ int kthread_stop(struct task_struct *k)
ret = kthread_stop_info.err;
mutex_unlock(&kthread_stop_lock);
+ trace_sched_kthread_stop_ret(ret);
+
return ret;
}
EXPORT_SYMBOL(kthread_stop);
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