| Message ID | 1467342302-16129-1-git-send-email-roger.lu@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Jul 01, 2016 at 11:05:02AM +0800, Roger Lu wrote: > 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> Rafael, can you please pick this on up? Thanks.
On Friday, July 01, 2016 11:09:42 AM Tejun Heo wrote: > On Fri, Jul 01, 2016 at 11:05:02AM +0800, Roger Lu wrote: > > 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> > > Rafael, can you please pick this on up? I will. Thanks, Rafael
diff --git a/kernel/power/process.c b/kernel/power/process.c index df058be..6eef250 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 e1c0e99..619e80c 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) {
If freezable workqueue aborts suspend flow, show workqueue state for debug purpose. Signed-off-by: Roger Lu <roger.lu@mediatek.com> --- Changes in v2: - remove prints in show_workqueue_state(). --- kernel/power/process.c | 3 +++ kernel/workqueue.c | 4 ++-- 2 files changed, 5 insertions(+), 2 deletions(-)