sched/fair: Make hrtick resched hard

Since the tick causes hard preemption, the hrtick should too.

Letting the hrtick do lazy preemption completely defeats the purpose, since
it will then still be delayed until a old tick and be dependent on
CONFIG_HZ.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260224163428.933894105@kernel.org

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 0b6ce88f8e54fc1b271ecb87ea3e7c0933f36060..e9e5fe4c07350cc75725ef595dfa842a669650fb 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5530,7 +5530,7 @@ entity_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr, int queued)
         * validating it and just reschedule.
         */
        if (queued) {
-               resched_curr_lazy(rq_of(cfs_rq));
+               resched_curr(rq_of(cfs_rq));
                return;
        }
 #endif