From: "H. Peter Anvin" <hpa@zytor.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>, Len Brown <lenb@kernel.org>,
x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, Len Brown <len.brown@intel.com>,
stable@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Mike Galbraith <efault@gmx.de>, Borislav Petkov <bp@alien8.de>
Subject: Re: [PATCH] x86 idle: repair large-server 50-watt idle-power regression
Date: Thu, 19 Dec 2013 08:50:06 -0800 [thread overview]
Message-ID: <52B323BE.7090108@zytor.com> (raw)
In-Reply-To: <20131219162136.GM16438@laptop.programming.kicks-ass.net>
On 12/19/2013 08:21 AM, Peter Zijlstra wrote:
>
> What's that mb for?
>
It already exists in mwait_idle_with_hints(); I just moved it into this
common function. It is a bit odd, I have to admit; it seems like it
should be *before* the monitor (and possibly we should have one after
the CLFLUSH as well?)
> Also, can you please merge:
>
> http://marc.info/?l=linux-kernel&m=138685838420632
>
> Thomas said he would pick up that series, but seems to have gone missing
> the past week or so.
>
We need to get the immediate regression fixed.
next prev parent reply other threads:[~2013-12-19 16:50 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-18 21:44 [PATCH] x86 idle: repair large-server 50-watt idle-power regression Len Brown
2013-12-19 12:22 ` Ingo Molnar
2013-12-19 14:40 ` H. Peter Anvin
2013-12-19 15:45 ` Borislav Petkov
2013-12-19 15:55 ` H. Peter Anvin
2013-12-19 16:02 ` Ingo Molnar
2013-12-19 16:09 ` H. Peter Anvin
2013-12-19 16:13 ` H. Peter Anvin
2013-12-19 16:21 ` Peter Zijlstra
2013-12-19 16:50 ` H. Peter Anvin [this message]
2013-12-19 17:07 ` Ingo Molnar
2013-12-19 17:25 ` Peter Zijlstra
2013-12-19 17:36 ` Peter Zijlstra
2013-12-19 18:05 ` H. Peter Anvin
2013-12-19 18:14 ` Ingo Molnar
2013-12-19 17:50 ` Peter Zijlstra
2013-12-19 18:18 ` Ingo Molnar
2013-12-19 21:05 ` H. Peter Anvin
2013-12-19 21:17 ` Ingo Molnar
2013-12-19 18:10 ` Ingo Molnar
2013-12-19 18:09 ` H. Peter Anvin
2013-12-19 18:19 ` H. Peter Anvin
2013-12-19 18:23 ` Ingo Molnar
[not found] ` <CA+55aFzGxcML7j8CEvQPYzh0W81uVoAAVmGctMOUZ7CZ1yYd2A@mail.gmail.com>
2013-12-19 18:43 ` Ingo Molnar
2013-12-19 18:19 ` Ingo Molnar
2013-12-19 19:22 ` H. Peter Anvin
2013-12-19 19:27 ` Peter Zijlstra
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