The following commit has been merged into the sched/core branch of tip:
Commit-ID: 22368fe1f9bbf39db2b5b52859589883273e80ce Gitweb: https://git.kernel.org/tip/22368fe1f9bbf39db2b5b52859589883273e80ce Author: Juri Lelli juri.lelli@redhat.com AuthorDate: Wed, 27 Nov 2024 07:37:40 +01:00 Committer: Peter Zijlstra peterz@infradead.org CommitterDate: Mon, 02 Dec 2024 12:01:27 +01:00
sched/deadline: Fix replenish_dl_new_period dl_server condition
The condition in replenish_dl_new_period() that checks if a reservation (dl_server) is deferred and is not handling a starvation case is obviously wrong.
Fix it.
Fixes: a110a81c52a9 ("sched/deadline: Deferrable dl server") Signed-off-by: Juri Lelli juri.lelli@redhat.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20241127063740.8278-1-juri.lelli@redhat.com --- kernel/sched/deadline.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index d9d5a70..206691d 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -781,7 +781,7 @@ static inline void replenish_dl_new_period(struct sched_dl_entity *dl_se, * If it is a deferred reservation, and the server * is not handling an starvation case, defer it. */ - if (dl_se->dl_defer & !dl_se->dl_defer_running) { + if (dl_se->dl_defer && !dl_se->dl_defer_running) { dl_se->dl_throttled = 1; dl_se->dl_defer_armed = 1; }