summaryrefslogtreecommitdiffstats
path: root/kernel/stop_machine.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/stop_machine.c')
-rw-r--r--kernel/stop_machine.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 4a1ca5f6da7e..082e71f17a58 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -126,6 +126,11 @@ int stop_one_cpu(unsigned int cpu, cpu_stop_fn_t fn, void *arg)
cpu_stop_init_done(&done, 1);
if (!cpu_stop_queue_work(cpu, &work))
return -ENOENT;
+ /*
+ * In case @cpu == smp_proccessor_id() we can avoid a sleep+wakeup
+ * cycle by doing a preemption:
+ */
+ cond_resched();
wait_for_completion(&done.completion);
return done.ret;
}