From: Peter Zijlstra <peterz@infradead.org>
To: Don Zickus <dzickus@redhat.com>
Cc: mingo@redhat.com, hpa@zytor.com, ying.huang@intel.com,
linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@elte.hu,
linux-tip-commits@vger.kernel.org
Subject: Re: [tip:perf/core] x86, NMI: Rewrite NMI handler
Date: Sun, 17 Oct 2010 12:42:43 +0200 [thread overview]
Message-ID: <1287312163.1998.158.camel@laptop> (raw)
In-Reply-To: <20101017004641.GB4140@redhat.com>
On Sat, 2010-10-16 at 20:46 -0400, Don Zickus wrote:
> Hmm, well to his defense, he isn't adding DIE_NMI_IPI. That code is
> already there. He is just re-arranging it, making it look painfully
> obvious the die_chain probably isn't as efficient as it should be.
>
> I think a bunch of us agree that we need to revamp the NMI notifier to
> make it less wasteful. I was hoping we could do that in a separate patch
> that would be layered on top of Huangs.
>
> Would you object to at least consider having this patch series in a
> work-in-progress git branch that we can build on top of, with the final
> outcome containing an nmi notifier that meets your expectations?
What's the point of keeping it in a git tree? Its just a few patches.
We've spend more time talking about this than it would take to actually
do the patch that kills DIE_NMI_IPI.
next prev parent reply other threads:[~2010-10-17 10:43 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-16 2:22 [PATCH 0/5] x86, NMI: give NMI handler a face-lift Don Zickus
2010-10-16 2:22 ` [PATCH 1/5] x86, NMI: Add NMI symbol constants and rename memory parity to PCI SERR Don Zickus
2010-10-16 16:36 ` [tip:perf/core] " tip-bot for Huang Ying
2010-10-16 2:22 ` [PATCH 2/5] x86, NMI: Add touch_nmi_watchdog to io_check_error delay Don Zickus
2010-10-16 16:36 ` [tip:perf/core] " tip-bot for Huang Ying
2010-10-16 2:22 ` [PATCH 3/5] x86, NMI: Rewrite NMI handler Don Zickus
2010-10-16 16:36 ` [tip:perf/core] " tip-bot for Huang Ying
2010-10-16 17:29 ` Peter Zijlstra
2010-10-16 18:20 ` Ingo Molnar
2010-10-16 18:40 ` Anca Emanuel
2010-10-17 0:46 ` Don Zickus
2010-10-17 10:42 ` Peter Zijlstra [this message]
2010-10-18 3:06 ` Huang Ying
2010-10-18 8:24 ` Peter Zijlstra
2010-10-16 2:22 ` [PATCH 4/5] x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU Don Zickus
2010-10-16 16:37 ` [tip:perf/core] " tip-bot for Huang Ying
2010-10-19 15:07 ` [PATCH 4/5] " Robert Richter
2010-10-19 16:25 ` Robert Richter
2010-10-19 18:37 ` Don Zickus
2010-10-20 0:23 ` Huang Ying
2010-10-20 10:03 ` Robert Richter
2010-10-21 0:46 ` Huang Ying
2010-10-20 14:27 ` Don Zickus
2010-10-21 0:40 ` Huang Ying
2010-10-21 1:18 ` Don Zickus
2010-10-21 1:25 ` Huang Ying
2010-10-21 2:37 ` Don Zickus
2010-10-21 2:53 ` Huang Ying
2010-10-16 2:22 ` [PATCH 5/5] x86, NMI: Remove do_nmi_callback logic Don Zickus
2010-10-16 16:37 ` [tip:perf/core] " tip-bot for Huang Ying
2010-10-19 15:03 ` [PATCH 5/5] " Robert Richter
2010-10-19 16:01 ` Don Zickus
2010-10-19 16:23 ` Robert Richter
2010-10-19 15:01 ` [PATCH 0/5] x86, NMI: give NMI handler a face-lift Robert Richter
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