Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754803Ab0BXITn (ORCPT ); Wed, 24 Feb 2010 03:19:43 -0500 Received: from mailout2.zih.tu-dresden.de ([141.30.67.73]:47222 "EHLO mailout2.zih.tu-dresden.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752416Ab0BXITm (ORCPT ); Wed, 24 Feb 2010 03:19:42 -0500 Subject: Patch for tracing c states (power_end) on x86 From: Robert =?ISO-8859-1?Q?Sch=F6ne?= To: Arjan van de Ven Cc: Ingo Molnar , Thomas Gleixner , kernel list Content-Type: text/plain; charset="UTF-8" Date: Wed, 24 Feb 2010 09:19:33 +0100 Message-ID: <1266999573.3415.8.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit X-TUD-Virus-Scanned: mailout2.zih.tu-dresden.de Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1507 Lines: 48 Hello, Since noone replied to my last mail (Febr. 15th, 11:42), describing the way to fix the missing c-state tracing, here's a patch. Maybe its easier that way. (I used the perf-fixes-for-linus git tree to obtain a more-then-up-to-date version) Bye Robert diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 02d6780..b1cfb88 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -384,6 +384,7 @@ void default_idle(void) else local_irq_enable(); current_thread_info()->status |= TS_POLLING; + trace_power_end(1); } else { local_irq_enable(); /* loop is done by the caller */ @@ -451,6 +452,7 @@ void mwait_idle_with_hints(unsigned long ax, unsigned long cx) if (!need_resched()) __mwait(ax, cx); } + trace_power_end((ax>>4)+1); } /* Default MONITOR/MWAIT with no hints, used for default C1 state */ @@ -467,6 +469,7 @@ static void mwait_idle(void) __sti_mwait(0, 0); else local_irq_enable(); + trace_power_end(1); } else local_irq_enable(); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/