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| author | Roger Lu <roger.lu@mediatek.com> | 2016-07-01 11:05:02 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-07-02 01:42:48 +0200 |
| commit | 7b776af66dc462caa7e839cc5c950a61db1f8551 (patch) | |
| tree | a9a32ede061fe88dd885e93bcbca748427cd4a18 | |
| parent | ea00f4f4f00cc2bc3b63ad512a4e6df3b20832b9 (diff) | |
| download | linux-stable-7b776af66dc462caa7e839cc5c950a61db1f8551.tar.gz linux-stable-7b776af66dc462caa7e839cc5c950a61db1f8551.tar.bz2 linux-stable-7b776af66dc462caa7e839cc5c950a61db1f8551.zip | |
PM / suspend: show workqueue state in suspend flow
If freezable workqueue aborts suspend flow, show
workqueue state for debug purpose.
Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | kernel/power/process.c | 3 | ||||
| -rw-r--r-- | kernel/workqueue.c | 4 |
2 files changed, 5 insertions, 2 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c index df058bed53ce..6eef250a5705 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -89,6 +89,9 @@ static int try_to_freeze_tasks(bool user_only) elapsed_msecs / 1000, elapsed_msecs % 1000, todo - wq_busy, wq_busy); + if (wq_busy) + show_workqueue_state(); + if (!wakeup) { read_lock(&tasklist_lock); for_each_process_thread(g, p) { diff --git a/kernel/workqueue.c b/kernel/workqueue.c index e1c0e996b5ae..619e80ce4a59 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -4369,8 +4369,8 @@ static void show_pwq(struct pool_workqueue *pwq) /** * show_workqueue_state - dump workqueue state * - * Called from a sysrq handler and prints out all busy workqueues and - * pools. + * Called from a sysrq handler or try_to_freeze_tasks() and prints out + * all busy workqueues and pools. */ void show_workqueue_state(void) { |