Re: [PATCH -fixes] drivers: perf: Fix smp_processor_id() use in preemptible code

[Alexandre Ghiti]

On 26/08/2024 19:31, Nam Cao wrote:
> On Mon, Aug 26, 2024 at 06:52:10PM +0200, Alexandre Ghiti wrote:
> > As reported in [1], the use of smp_processor_id() in
> > pmu_sbi_device_probe() must be protected by disabling the preemption, so
> > simple use get_cpu()/put_cpu() instead.
> >
> > Reported-by: Nam Cao <namcao@xxxxxxxxxxxxx>
> > Closes: https://lore.kernel.org/linux-riscv/20240820074925.ReMKUPP3@xxxxxxxxxxxxx/ [1]
> > Signed-off-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
> Tested-by: Nam Cao <namcao@xxxxxxxxxxxxx>
>
> I think this also needs:
> Fixes: a8625217a054 ("drivers/perf: riscv: Implement SBI PMU snapshot function")


Indeed, thanks for the tag!


> Best regards,
> Nam
>
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