On 2019-08-15 11:12:35 [-0400], Paul Thomas wrote: > > so it seems to works but I *think* that at 610.156813 shouldn't be there > > and it should switch to cyclictest. But if it is the broken irq-exit > > path then this should fix it: > > > > diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S > > index 63c6960262861..27a16c2711981 100644 > > --- a/arch/arm64/kernel/entry.S > > +++ b/arch/arm64/kernel/entry.S > > @@ -649,13 +649,7 @@ alternative_if ARM64_HAS_IRQ_PRIO_MASKING > > alternative_else_nop_endif > > > > cbz x24, 1f // (need_resched + count) == 0 > > - cbnz w24, 2f // count != 0 > > - > > - ldr w24, [tsk, #TSK_TI_PREEMPT_LAZY] // get preempt lazy count > > - cbnz w24, 2f // preempt lazy count != 0 > > - > > - ldr x0, [tsk, #TSK_TI_FLAGS] // get flags > > - tbz x0, #TIF_NEED_RESCHED_LAZY, 2f // needs rescheduling? > > + b 2f // count != 0 > > 1: > > bl preempt_schedule_irq // irq en/disable is done inside > > 2: > This doesn't look like it's against 5.2.y-rt or 5.0.y-rt? I don't see > a (need_resched + count) == 0 line? That was the previous patch I've sent you. > -Paul Sebastian
