Messages in this thread | | | Subject | Re: Patch for tracing c states (power_end) on x86 | From | Robert Schöne <> | Date | Thu, 11 Mar 2010 07:36:17 +0100 |
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Did anyone look at the problem described and checked the patch? I still received no reply.
Am Donnerstag, den 25.02.2010, 13:52 +0100 schrieb Peter Zijlstra: > On Wed, 2010-02-24 at 09:19 +0100, Robert Schöne wrote: > > 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) > > Arjan, any comments?, you seem skilled with this power stuff ;-) > > > 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/ >
-- Robert Schoene Technische Universitaet Dresden Zentrum fuer Informationsdienste und Hochleistungsrechnen 01062 Dresden
Tel.: (0351) 463-42483, Fax: (0351) 463-37773 E-Mail: Robert.Schoene@tu-dresden.de
-- 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/
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