linux-kernel - Re: [PATCH 0/5] Arch-generic sched_clock NMI safety and optimizations for -tip

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Message-ID: <20150317175559.GJ23123@twins.programming.kicks-ass.net>
Date:	Tue, 17 Mar 2015 18:55:59 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Daniel Thompson <daniel.thompson@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	Will Deacon <will.deacon@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 0/5] Arch-generic sched_clock NMI safety and
 optimizations for -tip

On Tue, Mar 17, 2015 at 10:38:21AM -0700, John Stultz wrote:
> Daniel Thompson (5):
>   sched_clock: Match scope of read and write seqcounts
>   sched_clock: Optimize cache line usage
>   sched_clock: Remove suspend from clock_read_data
>   sched_clock: Remove redundant notrace from update function
>   sched_clock: Avoid deadlock during read from NMI
> 
>  kernel/time/sched_clock.c | 195 ++++++++++++++++++++++++++++++++--------------
>  1 file changed, 138 insertions(+), 57 deletions(-)

Looks sane; makes one wonder if there's more code to share between this
and the core timekeeping; there's some strong resemblance ;-)

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
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