[linux-yocto] [PATCH 0/2]Yocto-linux-rt: Run irq-work under softirq context in rt on ARM/PowerPC

[Bruce Ashfield]

On 13-04-24 04:00 AM, Xufeng Zhang wrote:
> These two patches were created to fix one kernel warning in rt kernel.
>
> This "sleeping function called from invalid context" warning could be
> reproduced easily by running "perf top" command on ARM or PowerPC platforms
> after CONFIG_DEBUG_ATOMIC_SLEEP is enabled.
>
> Since x86 has already fixed this problem by handling the pending perf events
> under softirq context, we can do the same way on ARM and PowerPC to avoid
> this bug.
>
> This bug was recorded in Yocto bugzilla as Bug #4406.

Thanks. I've staged the patches here, they'll be pushed out in the
next few days.

Cheers,

Bruce

>
>
> Thanks,
> Xufeng
> ===================================================
> Xufeng Zhang (2):
>        arm/perf: run irq-work under softirq context in rt
>        powerpc/perf: run irq-work under softirq context in rt
>
>   arch/arm/kernel/perf_event_v6.c     |    2 ++
>   arch/arm/kernel/perf_event_v7.c     |    2 ++
>   arch/arm/kernel/perf_event_xscale.c |    4 ++++
>   arch/powerpc/kernel/time.c          |    2 ++
>   4 files changed, 10 insertions(+), 0 deletions(-)
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