From: "H. Peter Anvin" <hpa@zytor.com>
To: David Daney <ddaney.cavm@gmail.com>
Cc: Venkatesh Pallipadi <venki@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Suresh Siddha <suresh.b.siddha@intel.com>,
Aaron Durbin <adurbin@google.com>, Paul Turner <pjt@google.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] Extend mwait idle to optimize away IPIs when possible
Date: Mon, 06 Feb 2012 17:45:39 -0800 [thread overview]
Message-ID: <4F308243.8030003@zytor.com> (raw)
In-Reply-To: <4F307FB3.4030700@gmail.com>
On 02/06/2012 05:34 PM, David Daney wrote:
>
> Well I don't know that part. The gist of my comment was to get rid of an
> unneeded new config variable.
>
> If this works just as well for 32-bit, then by all means do it there too.
>
> In any event, I think you want the kernel to automatically do it if the
> CPU is capable, and not have a manual config setting you have to fiddle
> with.
>
If this is a transitional thing then it might justify it.
-hpa
next prev parent reply other threads:[~2012-02-07 1:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-06 20:42 [RFC] Extend mwait idle to optimize away IPIs when possible Venkatesh Pallipadi
2012-02-06 21:02 ` Peter Zijlstra
2012-02-06 21:26 ` Venki Pallipadi
2012-02-07 0:26 ` David Daney
2012-02-07 1:24 ` H. Peter Anvin
2012-02-07 1:34 ` David Daney
2012-02-07 1:45 ` H. Peter Anvin [this message]
2012-02-07 2:03 ` Venki Pallipadi
2012-02-07 2:24 ` Suresh Siddha
2012-02-07 21:39 ` Venki Pallipadi
2012-02-08 6:51 ` Yong Zhang
2012-02-08 23:28 ` Venki Pallipadi
2012-02-09 2:18 ` Yong Zhang
2012-02-10 2:17 ` Venki Pallipadi
2012-02-13 5:27 ` Yong Zhang
2012-02-10 19:19 ` Peter Zijlstra
2012-02-11 2:11 ` Venki Pallipadi
2012-02-11 3:09 ` Peter Zijlstra
2012-02-13 5:34 ` Yong Zhang
2012-02-14 13:52 ` Peter Zijlstra
2012-02-15 1:39 ` Yong Zhang
2012-02-15 2:32 ` Venki Pallipadi
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