On 2021-08-04 12:25:41 [-0400], Steven Rostedt wrote: > On Wed, 4 Aug 2021 18:22:31 +0200 > Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote: > > > no preemption happens here with NEED_RESCHED set. > > But if interrupts were disabled, how would NEED_RESCHED be set? As soon > as you enable interrupts, the interrupt that sets NEED_RESCHED would > trigger the preemption. CPU-local wake-ups just set NEED_RESCHED and wait for preempt_enable() to do the magic. Just because the code not perform wake_up() now does not mean it will not do so in the future. Also it is here as an example which might be copied somewhere else. > -- Steve Sebastian
