diff options
Diffstat (limited to 'kernel/workqueue.c')
-rw-r--r-- | kernel/workqueue.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 044b4eee760b..d78935e4fb5d 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -5065,8 +5065,7 @@ next_pool: /** * show_all_workqueues - dump workqueue state * - * Called from a sysrq handler or try_to_freeze_tasks() and prints out - * all busy workqueues and pools. + * Called from a sysrq handler and prints out all busy workqueues and pools. */ void show_all_workqueues(void) { @@ -5087,6 +5086,29 @@ void show_all_workqueues(void) rcu_read_unlock(); } +/** + * show_freezable_workqueues - dump freezable workqueue state + * + * Called from try_to_freeze_tasks() and prints out all freezable workqueues + * still busy. + */ +void show_freezable_workqueues(void) +{ + struct workqueue_struct *wq; + + rcu_read_lock(); + + pr_info("Showing freezable workqueues that are still busy:\n"); + + list_for_each_entry_rcu(wq, &workqueues, list) { + if (!(wq->flags & WQ_FREEZABLE)) + continue; + show_one_workqueue(wq); + } + + rcu_read_unlock(); +} + /* used to show worker information through /proc/PID/{comm,stat,status} */ void wq_worker_comm(char *buf, size_t size, struct task_struct *task) { |