Messages in this thread | | | From | Kurt Kanzenbach <> | Subject | Re: [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting | Date | Thu, 30 Jul 2020 09:23:44 +0200 |
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Hi Vladimir,
On Wed Jul 29 2020, Vladimir Oltean wrote: > For more context, here is my original report of the issue: > https://lkml.org/lkml/2020/6/4/1062 > > Just like you, I could not reproduce the RCU stalls and system hang on a > 5.6-rt kernel, just on mainline and derivatives, using the plain > defconfig. > > The issue is not specific to Layerscape or i.MX8, but rather I was able > to see the same behavior on Marvell Armada 37xx as well as Qualcomm > MSM8976. > > So, while of course I agree that disabling IRQ time accounting for arm64 > isn't a real solution, it isn't by far an exaggerated proposal either. > Nonetheless, the patch is just a RFC and should be treated as such. We > are at a loss when it comes to debugging this any further and we would > appreciate some pointers.
Yeah, sure. I'll try to reproduce this issue first. So it triggers with:
* arm64 * mainline, not -rt kernel * opened serial console * irq accounting enabled
Anything else?
Thanks, Kurt [unhandled content-type:application/pgp-signature] | |