- Restore dropping the priority of syncer down to PPAUSE when it is idle.

  This was lost when it was converted to using a condition variable instead
  of lbolt.
- Drop the priority of flowtable down to PPAUSE when it is idle as well
  since it is a similar background task.

MFC after:	2 weeks

1 files changed, 5 insertions, 0 deletions

diff --git a/sys/net/flowtable.c b/sys/net/flowtable.c
index 1ba07f9..198c4c3 100644
--- a/sys/net/flowtable.c
+++ b/sys/net/flowtable.c
@@ -1549,9 +1549,11 @@ static void
 flowtable_cleaner(void)
 {
 	VNET_ITERATOR_DECL(vnet_iter);
+	struct thread *td;
 
 	if (bootverbose)
 		log(LOG_INFO, "flowtable cleaner started\n");
+	td = curthread;
 	while (1) {
 		VNET_LIST_RLOCK();
 		VNET_FOREACH(vnet_iter) {
@@ -1566,6 +1568,9 @@ flowtable_cleaner(void)
 		 * is arbitrary
 		 */
 		mtx_lock(&flowclean_lock);
+		thread_lock(td);
+		sched_prio(td, PPAUSE);
+		thread_unlock(td);
 		flowclean_cycles++;
 		cv_broadcast(&flowclean_f_cv);
 		cv_timedwait(&flowclean_c_cv, &flowclean_lock, flowclean_freq);