lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <CABeCy1aUztmELNiD59L1cDj_KPPBYn=UYiF-Nu=K5sdeH3T2Sg@mail.gmail.com> Date: Thu, 23 Feb 2012 12:04:45 -0800 From: Venki Pallipadi <venki@...gle.com> To: Peter Zijlstra <peterz@...radead.org> Cc: Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Suresh Siddha <suresh.b.siddha@...el.com>, Aaron Durbin <adurbin@...gle.com>, Paul Turner <pjt@...gle.com>, Yong Zhang <yong.zhang0@...il.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH] Extend mwait idle to optimize away CAL and RES interrupts to an idle CPU -v1 [ Resending without the ugly email client formatting ] On Thu, Feb 23, 2012 at 1:08 AM, Peter Zijlstra <peterz@...radead.org> wrote: > On Thu, 2012-02-23 at 08:50 +0100, Ingo Molnar wrote: >> * Venkatesh Pallipadi <venki@...gle.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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists