From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 2917E6B01B2 for ; Tue, 29 Jun 2010 07:27:54 -0400 (EDT) Subject: Re: [PATCH] Add munmap events to perf From: Peter Zijlstra In-Reply-To: <20100629083323.GA6917@us.ibm.com> References: <1277748484-23882-1-git-send-email-ebmunson@us.ibm.com> <1277755486.3561.140.camel@laptop> <20100629083323.GA6917@us.ibm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Date: Tue, 29 Jun 2010 13:27:46 +0200 Message-ID: <1277810866.1868.32.camel@laptop> Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org To: Eric B Munson Cc: mingo@elte.hu, paulus@samba.org, acme@redhat.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Anton Blanchard List-ID: On Tue, 2010-06-29 at 09:33 +0100, Eric B Munson wrote: > On Mon, 28 Jun 2010, Peter Zijlstra wrote: >=20 > > On Mon, 2010-06-28 at 19:08 +0100, Eric B Munson wrote: > > > This patch adds a new software event for munmaps. It will allows > > > users to profile changes to address space. munmaps will be tracked > > > with mmaps. > >=20 > > Why? > >=20 >=20 > It is going to be used by a tool that will model memory usage over the > lifetime of a process. Wouldn't it be better to use some tracepoints for that instead? I want to keep the sideband data to a minimum required to interpret the sample data, and you don't need unmap events for that. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org