From: Venki Pallipadi <venki@google.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Suresh Siddha <suresh.b.siddha@intel.com>,
Aaron Durbin <adurbin@google.com>, Paul Turner <pjt@google.com>,
Yong Zhang <yong.zhang0@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Extend mwait idle to optimize away CAL and RES interrupts to an idle CPU -v1
Date: Thu, 23 Feb 2012 12:04:45 -0800 [thread overview]
Message-ID: <CABeCy1aUztmELNiD59L1cDj_KPPBYn=UYiF-Nu=K5sdeH3T2Sg@mail.gmail.com> (raw)
In-Reply-To: <1329988135.24994.43.camel@twins>
[ Resending without the ugly email client formatting ]
On Thu, Feb 23, 2012 at 1:08 AM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Thu, 2012-02-23 at 08:50 +0100, Ingo Molnar wrote:
>> * Venkatesh Pallipadi <venki@google.com> wrote:
>
>> > * We can also eliminate TS_POLLING flag in favor of this. But, that will have
>> > a lot more touchpoints and better done as a standlone change.
>>
>> Should most definitely be done for this series to be acceptble -
>> as a preparatory patch in the series, with the feature at the
>> end of the series.
>
> I don't think you can, TS_POLLING still works for idle=poll, whereas
> this new stuff requires monitor/mwait.
>
Even poll_idle should be able to use this ipiless_wakeup. It just have
to poll for an additional IPI_PENDING bit along with need_resched.
next prev parent reply other threads:[~2012-02-23 20:04 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-23 0:36 [PATCH] Extend mwait idle to optimize away CAL and RES interrupts to an idle CPU -v1 Venkatesh Pallipadi
2012-02-23 7:50 ` Ingo Molnar
2012-02-23 9:08 ` Peter Zijlstra
2012-02-23 20:04 ` Venki Pallipadi [this message]
2012-02-23 20:03 ` Venki Pallipadi
2012-03-02 0:33 ` Venki Pallipadi
2012-03-02 1:28 ` Suresh Siddha
2012-03-02 1:35 ` Venki Pallipadi
2012-03-02 1:37 ` Suresh Siddha
2012-03-02 2:00 ` Venki Pallipadi
2012-03-02 7:21 ` Ingo Molnar
2012-03-02 17:41 ` Suresh Siddha
2012-03-06 21:41 ` fork_idle from wq cleanup Venkatesh Pallipadi
2012-03-06 21:41 ` [PATCH 1/5] x86: Move fork_idle from wq and idle caching to common code Venkatesh Pallipadi
2012-03-06 21:41 ` [PATCH 2/5] ia64: Use common fork_idle_from_wq in smpboot Venkatesh Pallipadi
2012-03-06 21:41 ` [PATCH 3/5] mips: " Venkatesh Pallipadi
2012-03-06 22:51 ` Ralf Baechle
2012-03-06 21:41 ` [PATCH 4/5] powerpc: " Venkatesh Pallipadi
2012-03-06 21:41 ` [PATCH 5/5] s390: " Venkatesh Pallipadi
2012-03-07 7:00 ` Heiko Carstens
2012-03-07 6:06 ` fork_idle from wq cleanup Suresh Siddha
2012-02-23 9:30 ` [PATCH] Extend mwait idle to optimize away CAL and RES interrupts to an idle CPU -v1 Peter Zijlstra
2012-02-23 19:34 ` Venki Pallipadi
2012-02-24 5:41 ` Yong Zhang
2012-02-24 6:13 ` Yong Zhang
2012-02-27 8:38 ` Peter Zijlstra
2012-02-27 9:08 ` Yong Zhang
2012-02-27 9:30 ` Peter Zijlstra
2012-02-27 9:51 ` Yong Zhang
2012-02-26 1:32 ` Paul E. McKenney
2012-02-27 9:06 ` Yong Zhang
2012-02-27 17:05 ` Paul E. McKenney
2012-02-28 7:12 ` Yong Zhang
2012-02-28 13:05 ` Paul E. McKenney
2012-02-29 6:36 ` Yong Zhang
2012-02-27 8:45 ` Peter Zijlstra
2012-02-27 18:17 ` Venki Pallipadi
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