Merge branch 'timers/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / kernel / stop_machine.c

diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 0101aee..ba9b205 100644 (file)
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -62,8 +62,7 @@ static int stopmachine(void *cpu)
                 * help our sisters onto their CPUs. */
                if (!prepared && !irqs_disabled)
                        yield();
-               else
-                       cpu_relax();
+               cpu_relax();
        }
 
        /* Ack: we are exiting. */
@@ -106,8 +105,10 @@ static int stop_machine(void)
        }
 
        /* Wait for them all to come to life. */
-       while (atomic_read(&stopmachine_thread_ack) != stopmachine_num_threads)
+       while (atomic_read(&stopmachine_thread_ack) != stopmachine_num_threads) {
                yield();
+               cpu_relax();
+       }
 
        /* If some failed, kill them all. */
        if (ret < 0) {
@@ -186,7 +187,7 @@ struct task_struct *__stop_machine_run(int (*fn)(void *), void *data,
                struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
 
                /* One high-prio thread per cpu.  We'll do this one. */
-               sched_setscheduler(p, SCHED_FIFO, &param);
+               sched_setscheduler_nocheck(p, SCHED_FIFO, &param);
                kthread_bind(p, cpu);
                wake_up_process(p);
                wait_for_completion(&smdata.done);