Hello, On Wed, Jun 22, 2016 at 05:08:29PM +0800, Roger Lu wrote: > When suspend flow is aborted because of workqueues busy, > show workqueues busy name for debug purpose. > > Signed-off-by: Roger Lu <roger...@mediatek.com> > --- > include/linux/workqueue.h | 1 + > kernel/power/process.c | 3 +++ > kernel/workqueue.c | 35 +++++++++++++++++++++++++++++++++++ > 3 files changed, 39 insertions(+) > > diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h > index ca73c50..c9f9b24 100644 > --- a/include/linux/workqueue.h > +++ b/include/linux/workqueue.h > @@ -609,6 +609,7 @@ long work_on_cpu(int cpu, long (*fn)(void *), void > *arg); > #ifdef CONFIG_FREEZER > extern void freeze_workqueues_begin(void); > extern bool freeze_workqueues_busy(void); > +extern void show_workqueues_busy(void); > extern void thaw_workqueues(void); > #endif /* CONFIG_FREEZER */ > > diff --git a/kernel/power/process.c b/kernel/power/process.c > index df058be..b538881 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_workqueues_busy();
I think it'd probably be better to call show_workqueue_state() instead so that we can get a full picture of what's going on. Thanks. -- tejun
