From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757612Ab3GVQ7w (ORCPT ); Mon, 22 Jul 2013 12:59:52 -0400 Received: from www.sr71.net ([198.145.64.142]:34911 "EHLO blackbird.sr71.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756705Ab3GVQ7v (ORCPT ); Mon, 22 Jul 2013 12:59:51 -0400 Message-ID: <51ED64FC.8090104@sr71.net> Date: Mon, 22 Jul 2013 09:59:40 -0700 From: Dave Hansen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130623 Thunderbird/17.0.7 MIME-Version: 1.0 To: Ingo Molnar CC: Raghavendra KT , linux-kernel@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org, Raghavendra KT Subject: Re: [RESEND][PATCH] mm: vmstats: tlb flush counters References: <20130716234438.C792C316@viggo.jf.intel.com> <51E95932.5030902@sr71.net> <20130722100605.GA1148@gmail.com> In-Reply-To: <20130722100605.GA1148@gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/22/2013 03:06 AM, Ingo Molnar wrote: > Btw., would be nice to also integrate these VM counters into perf as well, > as an instrumentation variant/option. > > It could be done in an almost zero overhead fashion using jump-labels I > think. > > [ Just in case someone is bored to death and is looking for an interesting > side project ;-) ] I'd actually been thinking about making them in to tracepoints, but the tracepoint macros seem to create #include messes if you try to use them in very common headers. Agree it would be an interesting side project, though. :)