Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755480Ab2BGPjm (ORCPT ); Tue, 7 Feb 2012 10:39:42 -0500 Received: from e35.co.us.ibm.com ([32.97.110.153]:49866 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751302Ab2BGPjl (ORCPT ); Tue, 7 Feb 2012 10:39:41 -0500 Date: Tue, 7 Feb 2012 07:37:10 -0800 From: "Paul E. McKenney" To: Steven Rostedt Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton , Rob Herring , Nicolas Pitre , Kevin Hilman , Josh Triplett , Mathieu Desnoyers Subject: Re: [PATCH 0/3][RFC] tracing/rcu: Add _rcuidle() tracepoint to handle rcu_idle_exit() tracepoints Message-ID: <20120207153710.GQ5941@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20120207145653.829892056@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120207145653.829892056@goodmis.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12020715-6148-0000-0000-0000033B1C8D Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1830 Lines: 45 On Tue, Feb 07, 2012 at 09:56:53AM -0500, Steven Rostedt wrote: > This is an RFC patch set for what I plan on pushing out to handle > the tracepoints that are called from within rcu_idle_exit() sections. > > The first patch is the tracepoint infrastructure, > the second is the changes in x86 > the third is the changes in the cpuidle driver. > > I see there's use cases in the arm arch, but as that is in flux, I'll > let the arm folks deal with those. Please note that the __rcudle() tracepoints depend on patch #45 from my series (https://lkml.org/lkml/2012/2/3/471), though only for code containing tracepoints that are called both from idle and non-idle. I believe that the tracepoints in this patch series are only invoked from idle, so should be no problem. Thanx, Paul > -- Steve > > > Steven Rostedt (3): > tracing/rcu: Add trace_##name##__rcuidle() static tracepoint for inside rcu_idle_exit() sections > x86/tracing: Denote the power and cpuidle tracepoints as _rcuidle() > cpuidle/tracing: Denote the tracepoints as being in rcu_idle_exit() section > > ---- > arch/x86/kernel/process.c | 24 ++++++++++++------------ > drivers/cpuidle/cpuidle.c | 8 ++++---- > include/linux/tracepoint.h | 20 ++++++++++++++++---- > 3 files changed, 32 insertions(+), 20 deletions(-) > > -- > 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/ > -- 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/