workqueue: declare system_highpri_wq
system_highpri_wq is exported to modules via EXPORT_SYMBOL_GPL(),
but it was forgotten to be declared in workqueue.h. So we add the declaration
and a short description for it.
tj: Minor comment tweak.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index d93d28b..b263b29 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -340,6 +340,9 @@
* short queue flush time. Don't queue works which can run for too
* long.
*
+ * system_highpri_wq is similar to system_wq but for work items which
+ * require WQ_HIGHPRI.
+ *
* system_long_wq is similar to system_wq but may host long running
* works. Queue flushing might take relatively long.
*
@@ -358,6 +361,7 @@
* 'wq_power_efficient' is disabled. See WQ_POWER_EFFICIENT for more info.
*/
extern struct workqueue_struct *system_wq;
+extern struct workqueue_struct *system_highpri_wq;
extern struct workqueue_struct *system_long_wq;
extern struct workqueue_struct *system_unbound_wq;
extern struct workqueue_struct *system_freezable_wq;