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| author | Ingo Molnar <mingo@elte.hu> | 2012-01-08 12:31:24 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-01-08 12:31:24 +0100 |
| commit | 636f0c70f2557e0819b50c74e31b4a027327015e (patch) | |
| tree | 3a259ef26659dac92782651440091b9f5ab1a7f7 /kernel/hung_task.c | |
| parent | 675eef66e3edcab8065533edfefbcbbacb9a30d3 (diff) | |
| parent | 2e885057b7f75035f0b85e02f737891482815a81 (diff) | |
| download | op-kernel-dev-636f0c70f2557e0819b50c74e31b4a027327015e.zip op-kernel-dev-636f0c70f2557e0819b50c74e31b4a027327015e.tar.gz | |
Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core
Diffstat (limited to 'kernel/hung_task.c')
| -rw-r--r-- | kernel/hung_task.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/kernel/hung_task.c b/kernel/hung_task.c index 8b1748d..2e48ec0 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -74,11 +74,17 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) /* * Ensure the task is not frozen. - * Also, when a freshly created task is scheduled once, changes - * its state to TASK_UNINTERRUPTIBLE without having ever been - * switched out once, it musn't be checked. + * Also, skip vfork and any other user process that freezer should skip. */ - if (unlikely(t->flags & PF_FROZEN || !switch_count)) + if (unlikely(t->flags & (PF_FROZEN | PF_FREEZER_SKIP))) + return; + + /* + * When a freshly created task is scheduled once, changes its state to + * TASK_UNINTERRUPTIBLE without having ever been switched out once, it + * musn't be checked. + */ + if (unlikely(!switch_count)) return; if (switch_count != t->last_switch_count) { |
