linux-kernel - Re: [PATCH 0/2] More RCU vs idle fixes

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Message-ID: <yt9dv9du7tow.fsf@linux.ibm.com>
Date:   Tue, 24 Nov 2020 14:47:27 +0100
From:   Sven Schnelle <svens@...ux.ibm.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     rafael@...nel.org, viresh.kumar@...aro.org, mingo@...nel.org,
        x86@...nel.org, mark.rutland@....com, will@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] More RCU vs idle fixes

Peter Zijlstra <peterz@...radead.org> writes:

> Both arm64 and s390 are tripping over arch_cpu_idle() RCU,tracing,lockdep
> interaction. While looking at that I also found fail in inte_idle.
>
> Please consider for this cycle.

Is anyone taking this patchset? For s390, we also need to change the
local_irq_safe/restore to the raw variants in enabled_wait() in
arch/s390/kernel/idle.c. I can make a patch and carry that via the
s390 tree, but i want to make sure the s390 change in this patchset
also reaches linus' tree.

Thanks
Sven