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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2016-03-14 15:33:57 -0800 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2016-08-28 19:15:19 -0800 |
| commit | 3939d5b7321dcd548d093126bbc568318bb9ee10 (patch) | |
| tree | 02a4050b8927ebdbb3df427ed3fc043afa85089b | |
| parent | 26031fdf96022ec685b53daf4c1fc3981f8f0d25 (diff) | |
workqueue: context_is_freezable()
| -rw-r--r-- | include/linux/workqueue.h | 3 | ||||
| -rw-r--r-- | kernel/workqueue.c | 22 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index ca73c503b92a..b853f6d1a458 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -358,6 +358,9 @@ extern struct workqueue_struct *system_freezable_wq; extern struct workqueue_struct *system_power_efficient_wq; extern struct workqueue_struct *system_freezable_power_efficient_wq; +bool context_is_freezable(void); +const char *context_name(void); + extern struct workqueue_struct * __alloc_workqueue_key(const char *fmt, unsigned int flags, int max_active, struct lock_class_key *key, const char *lock_name, ...) __printf(1, 6); diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 2db41ecca2c4..8e6a3a44d088 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -521,6 +521,28 @@ static inline void debug_work_activate(struct work_struct *work) { } static inline void debug_work_deactivate(struct work_struct *work) { } #endif +bool context_is_freezable(void) +{ + struct worker *worker; + + worker = current_wq_worker(); + if (worker) + return worker->current_pwq->wq->flags & WQ_FREEZABLE; + else + return !(current->flags & PF_NOFREEZE); +} + +const char *context_name(void) +{ + struct worker *worker; + + worker = current_wq_worker(); + if (worker) + return worker->current_pwq->wq->name; + else + return current->comm; +} + /** * worker_pool_assign_id - allocate ID and assing it to @pool * @pool: the pool pointer of interest |