Messages in this thread | | | Date | Tue, 11 Jun 2019 06:54:29 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH HACK RFC] cpu: Prevent late-arriving interrupts from disrupting offline |
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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, > > [...] > > >>>And it looks like the reason I dropped it was that I didn't get any > >>>response from the maintainer. I sent a message to this effect to > >>>linux-arm-kernel@lists.infradead.org and linux@arm.linux.org.uk on May > >>>21, 2015. > >>> > >>>So here it is again. ;-) > >>> > >>>I have queued this locally. Left to myself, I add the two of you on its > >>>Cc: list and run it through my normal process. But given the history, > >>>I would still want either an ack from the maintainer or, better, for > >>>the maintainer to take the patch. > >>> > >>>Or is there a better way for us to proceed on this? > >> > >>You could send this patch also to > >>linux-arm-kernel@lists.infradead.org and cc rmk to get his opinion > >>on the patch. > > > >OK, please let me know how the testing goes. My thought is to send the > >patch as you suggest with your Tested-by. > > 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?
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.
Thanx, Paul
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