* [BUG] sleeping function called from invalid context in perf_pmu_register()
[not found] <20171229085904.GC18393@Red>
@ 2018-01-10 10:52 ` Jiri Olsa
0 siblings, 0 replies; only message in thread
From: Jiri Olsa @ 2018-01-10 10:52 UTC (permalink / raw)
To: linux-arm-kernel
On Fri, Dec 29, 2017 at 09:59:04AM +0100, Corentin Labbe wrote:
SNIP
> [ 1.494884] Exception stack(0xee845fb0 to 0xee845ff8)
> [ 1.499933] 5fa0: 00000000 00000000 00000000 00000000
> [ 1.508100] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 1.516267] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
> [ 1.522871] r5:c06c2528 r4:00000000
>
> This is due to get_cpu() in cci_pmu_probe() in drivers/bus/arm-cci.c which disable preemption.
> But now I do not know how to fix it.
> My .config is below.
yep, looks like cci_pmu_probe needs to be fixed.. can't
call perf_pmu_register with preemption disabled
jirka
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[not found] <20171229085904.GC18393@Red>
2018-01-10 10:52 ` [BUG] sleeping function called from invalid context in perf_pmu_register() Jiri Olsa
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