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

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Message-ID: <20201124141853.GG2414@hirez.programming.kicks-ass.net>
Date:   Tue, 24 Nov 2020 15:18:53 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Sven Schnelle <svens@...ux.ibm.com>
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

On Tue, Nov 24, 2020 at 02:47:27PM +0100, Sven Schnelle wrote:
> 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?

I think I'll stuff it in x86/urgent for lack of a better place.

> 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.

Duh, I'll add that.