Commit 3270476a6c0ce322354df8679652f060d66526dc ('workqueue: reimplement
WQ_HIGHPRI using a separate worker_pool') introduce separate worker pool
for HIGHPRI. When we handle busyworkers for gcwq, it can be normal worker
or highpri worker. But, we don't consider this difference in rebind_workers(),
we use just system_wq for highpri worker. It makes mismatch between
cwq->pool and worker->pool.
It doesn't make error in current implementation, but possible in the future.
Now, we introduce system_highpri_wq to use proper cwq for highpri workers
in rebind_workers(). Following patch fix this issue properly.
Signed-off-by: Joonsoo Kim <js1...@gmail.com>
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index bc5c5e1..f69f094 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -269,12 +269,14 @@ struct workqueue_struct {
};
struct workqueue_struct *system_wq __read_mostly;
+struct workqueue_struct *system_highpri_wq __read_mostly;
struct workqueue_struct *system_long_wq __read_mostly;
struct workqueue_struct *system_nrt_wq __read_mostly;
struct workqueue_struct *system_unbound_wq __read_mostly;
struct workqueue_struct *system_freezable_wq __read_mostly;
struct workqueue_struct *system_nrt_freezable_wq __read_mostly;
EXPORT_SYMBOL_GPL(system_wq);
+EXPORT_SYMBOL_GPL(system_highpri_wq);
EXPORT_SYMBOL_GPL(system_long_wq);
EXPORT_SYMBOL_GPL(system_nrt_wq);
EXPORT_SYMBOL_GPL(system_unbound_wq);
@@ -3749,6 +3751,7 @@ static int __init init_workqueues(void)
}
system_wq = alloc_workqueue("events", 0, 0);
+ system_highpri_wq = alloc_workqueue("events_highpri", 0, 0);
system_long_wq = alloc_workqueue("events_long", 0, 0);
system_nrt_wq = alloc_workqueue("events_nrt", WQ_NON_REENTRANT, 0);
system_unbound_wq = alloc_workqueue("events_unbound", WQ_UNBOUND,
@@ -3757,8 +3760,8 @@ static int __init init_workqueues(void)
WQ_FREEZABLE, 0);
system_nrt_freezable_wq = alloc_workqueue("events_nrt_freezable",
WQ_NON_REENTRANT | WQ_FREEZABLE, 0);
- BUG_ON(!system_wq || !system_long_wq || !system_nrt_wq ||
- !system_unbound_wq || !system_freezable_wq ||
+ BUG_ON(!system_wq || !system_highpri_wq || !system_long_wq ||
+ !system_nrt_wq || !system_unbound_wq || !system_freezable_wq ||
!system_nrt_freezable_wq);
return 0;
}
--
1.7.9.5
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