Messages in this thread | | | Subject | Re: [PATCH HACK RFC] cpu: Prevent late-arriving interrupts from disrupting offline | From | Dietmar Eggemann <> | Date | Tue, 11 Jun 2019 16:39:34 +0200 |
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On 6/11/19 3:54 PM, Paul E. McKenney wrote: > On Tue, Jun 11, 2019 at 03:14:54PM +0200, Dietmar Eggemann wrote: >> On 6/8/19 6:41 PM, Paul E. McKenney wrote: >>> On Tue, Jun 04, 2019 at 03:29:32PM +0200, Dietmar Eggemann wrote: >>>> On 6/4/19 9:45 AM, Paul E. McKenney wrote: >>>>> On Mon, Jun 03, 2019 at 03:39:18PM +0200, Dietmar Eggemann wrote: >>>>>> On 6/3/19 1:44 PM, Mark Rutland wrote: >>>>>>> On Mon, Jun 03, 2019 at 10:38:48AM +0200, Peter Zijlstra wrote: >>>>>>>> On Sat, Jun 01, 2019 at 06:12:53PM -0700, Paul E. McKenney wrote: >>>>>>>>> Scheduling-clock interrupts can arrive late in the CPU-offline process,
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>> Tested your patch on top of v5.2-rc4* on Arm TC2 (32bit) and CPU >> hotplug stress test. W/o your patch, the test fails within seconds >> since CPUs are not coming up again. W/ your patch, the test runs for >> hours just fine. >> >> You can add my: >> >> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> > > Thank you!!! > >> * just for the record: one additional unrelated patch (to disable >> the NOR flash) is necessary on Arm TC2: >> https://patchwork.kernel.org/patch/10968391 . > > Is this progressing, or does it also need help getting to mainline?
This is an unrelated specific issue w/ the TC2 platform which will progress independently. Other Arm32 platforms should profit from your patch independently of that. I just wanted to mention it here in case people try to recreate the test on this specific platform. > Left to myself, I will push my patch and assume that the NOR flash patch > will make it in its own good time -- or, alternatively, that there is > someone better positioned than me to push it.
IMHO, the best thing is you push your patch.
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