diff options
Diffstat (limited to '')
| -rw-r--r-- | kernel/sched/ext.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index 60a7eb7d8a9e..9efb54172495 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -2726,17 +2726,19 @@ static void set_next_task_scx(struct rq *rq, struct task_struct *p, bool first) static void process_ddsp_deferred_locals(struct rq *rq) { - struct task_struct *p, *tmp; + struct task_struct *p; lockdep_assert_rq_held(rq); /* * Now that @rq can be unlocked, execute the deferred enqueueing of * tasks directly dispatched to the local DSQs of other CPUs. See - * direct_dispatch(). + * direct_dispatch(). Keep popping from the head instead of using + * list_for_each_entry_safe() as dispatch_local_dsq() may unlock @rq + * temporarily. */ - list_for_each_entry_safe(p, tmp, &rq->scx.ddsp_deferred_locals, - scx.dsq_list.node) { + while ((p = list_first_entry_or_null(&rq->scx.ddsp_deferred_locals, + struct task_struct, scx.dsq_list.node))) { s32 ret; list_del_init(&p->scx.dsq_list.node); |