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To: Nicholas Piggin <npiggin@gmail.com>, linuxppc-dev@lists.ozlabs.org
From: Michael Ellerman <patch-notifications@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>, Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [1/6] powerpc: NMI IPI improve lock primitive
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Date: Thu, 10 Aug 2017 22:07:11 +1000 (AEST)
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On Wed, 2017-08-09 at 12:41:21 UTC, Nicholas Piggin wrote:
> When the NMI IPI lock is contended, spin at low SMT priority, using
> loads only, and with interrupts enabled (where possible). This
> improves behaviour under high contention (e.g., a system crash when
> a number of CPUs are trying to enter the debugger).
> 
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

Series applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/0459ddfdb31e7d812b555a2530ecba

cheers