From: Peter Zijlstra <peterz@infradead.org>
To: Luming Yu <luming.yu@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Len Brown <lenb@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>, tglx <tglx@linutronix.de>
Subject: Re: [PATCH] a patch to fix the cpu-offline-online problem caused by pm_idle
Date: Mon, 31 Jan 2011 15:17:47 +0100 [thread overview]
Message-ID: <1296483467.26581.26.camel@laptop> (raw)
In-Reply-To: <AANLkTikwPq+vJEGyOrbS3hbPk6ygsmC8cxGun9-KGA6a@mail.gmail.com>
On Mon, 2011-01-31 at 09:10 -0500, Luming Yu wrote:
>
> My understanding is if the heart of the problem is triggered by some
> hardware defects.
> And we could have no other clean option than a solution I proposed
> here.
Well, a cleaner option is to limit NHM-EX hardware to C1 and simply
dis-allow anything deeper on it.
> Yes, I agree before say yes to a "workaround", we need to understand
> exactly what those side effects are. I will try to do research on all
> side effects caused by the ipi and c3 latency to tickless and highres
> kernel after one week vacation starting from Feb 1st.
>
OK, great! and enjoy your time away from the computer ;-)
next prev parent reply other threads:[~2011-01-31 14:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-24 7:34 [PATCH] a patch to fix the cpu-offline-online problem caused by pm_idle Luming Yu
2011-01-24 18:41 ` Peter Zijlstra
2011-01-25 1:59 ` Luming Yu
2011-01-25 9:12 ` Peter Zijlstra
2011-01-26 6:42 ` Luming Yu
2011-01-28 10:30 ` Peter Zijlstra
2011-01-29 5:44 ` Luming Yu
2011-01-30 16:36 ` Peter Zijlstra
2011-01-31 3:26 ` Luming Yu
2011-01-31 10:16 ` Peter Zijlstra
2011-01-31 14:10 ` Luming Yu
2011-01-31 14:17 ` Peter Zijlstra [this message]
2011-01-31 10:48 ` Peter Zijlstra
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