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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2012-10-26 17:17:44 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-02-21 08:50:17 +0100
commita53efe5ff88d0283bae8a2c2fa066d0fff31dc91 (patch)
tree8b500f9df4ad79e7159ad08ec8231278166eb499 /kernel
parent56f15e518cfdc732bd4e4da90e0c9cf2fc4e7c1b (diff)
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sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm
The finish_arch_post_lock_switch is called at the end of the task switch after all locks have been released. In concept it is paired with the switch_mm function, but the current code only does the call in finish_task_switch. Add the call to idle_task_exit and use_mm. One use case for the additional calls is s390 which will use finish_arch_post_lock_switch to wait for the completion of TLB flush operations. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched/core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b46131e..4b0739c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4692,8 +4692,10 @@ void idle_task_exit(void)
BUG_ON(cpu_online(smp_processor_id()));
- if (mm != &init_mm)
+ if (mm != &init_mm) {
switch_mm(mm, &init_mm, current);
+ finish_arch_post_lock_switch();
+ }
mmdrop(mm);
}
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