From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755681AbYBIHiV (ORCPT ); Sat, 9 Feb 2008 02:38:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751901AbYBIHiN (ORCPT ); Sat, 9 Feb 2008 02:38:13 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:59278 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751887AbYBIHiM (ORCPT ); Sat, 9 Feb 2008 02:38:12 -0500 Date: Sat, 9 Feb 2008 08:37:56 +0100 From: Ingo Molnar To: Andrew Morton Cc: Linus Torvalds , Steven Rostedt , linux-kernel@vger.kernel.org Subject: Re: [git pull] latency tracer Message-ID: <20080209073756.GA13141@elte.hu> References: <20080208214522.GA31101@elte.hu> <20080208232306.6e8a8162.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080208232306.6e8a8162.akpm@linux-foundation.org> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Andrew Morton wrote: > On Fri, 8 Feb 2008 22:45:22 +0100 Ingo Molnar wrote: > > > Linus, please pull the latency tracer tree from: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git > > > > Find the shortlog below. > > > > This is the latency tracer from -rt > > I've never seen any of this code before and googling several of the > patch titles turns up this email and nothing else. there might be some confusion here. Google for "mcount tracing utility" - there's 2270 hits. There's been 8 full series posted to lkml in the past month: Date: Thu, 03 Jan 2008 02:16:09 -0500 Subject: [RFC PATCH 00/11] mcount tracing utility Date: Wed, 09 Jan 2008 18:29:14 -0500 Subject: [RFC PATCH 00/22 -v2] mcount and latency tracing utility -v2 Date: Tue, 15 Jan 2008 15:49:07 -0500 Subject: [RFC PATCH 00/30 v3] mcount and latency tracing utility -v3 Date: Mon, 21 Jan 2008 10:22:31 -0500 Subject: [RFC PATCH 00/23 -v4] mcount and latency tracing utility -v4 Date: Wed, 23 Jan 2008 11:02:36 -0500 Subject: [PATCH 00/20 -v5] mcount and latency tracing utility -v5 Date: Fri, 25 Jan 2008 23:21:52 -0500 Subject: [PATCH 00/23 -v6] mcount and latency tracing utility -v6 Date: Tue, 29 Jan 2008 22:15:21 -0500 Subject: [PATCH 00/22 -v7] mcount and latency tracing utility -v7 Date: Wed, 30 Jan 2008 16:03:57 -0500 Subject: [PATCH 00/23 -v8] mcount and latency tracing utility -v8 it derives from the same latency tracer code that we wrote for -rt that has been around for years: http://people.redhat.com/mingo/latency-tracing-patches/ we renamed the concept to 'ftrace' during pre-merge cleanups, perhaps that is what caused you to not recognize this? (mcount is a confusing name and ties it to a gcc feature while there's nothing gcc specific about this concept.) Ingo