tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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

Peter Zijlstra (Intel) 5d88e424 97015376

+1 -1
+1 -1
kernel/sched/fair.c
··· 5530 5530 * validating it and just reschedule. 5531 5531 */ 5532 5532 if (queued) { 5533 - resched_curr_lazy(rq_of(cfs_rq)); 5533 + resched_curr(rq_of(cfs_rq)); 5534 5534 return; 5535 5535 } 5536 5536 #endif