From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755440Ab1CBRCR (ORCPT ); Wed, 2 Mar 2011 12:02:17 -0500 Received: from e3.ny.us.ibm.com ([32.97.182.143]:35786 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754749Ab1CBRCQ (ORCPT ); Wed, 2 Mar 2011 12:02:16 -0500 Subject: Re: [RFC PATCH 4/5] mm: Add hit/miss accounting for Page Cache From: Dave Hansen To: Ingo Molnar Cc: Liu Yuan , linux-kernel@vger.kernel.org, linux-mm@kvack.org, jaxboe@fusionio.com, akpm@linux-foundation.org, fengguang.wu@intel.com, Peter Zijlstra , =?ISO-8859-1?Q?Fr=E9d=E9ric?= Weisbecker , Steven Rostedt , Thomas Gleixner , Arnaldo Carvalho de Melo In-Reply-To: <20110302084542.GA20795@elte.hu> References: <1299055090-23976-4-git-send-email-namei.unix@gmail.com> <20110302084542.GA20795@elte.hu> Content-Type: text/plain; charset="ISO-8859-1" Date: Wed, 02 Mar 2011 09:02:06 -0800 Message-ID: <1299085326.8493.820.camel@nimitz> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2011-03-02 at 09:45 +0100, Ingo Molnar wrote: > But, instead of trying to improve those aspects of our existing instrumentation > frameworks, mm/* is gradually growing its own special instrumentation hacks, missing > the big picture and fragmenting the instrumentation space some more. > > That trend is somewhat sad. Go any handy examples of how you'd like to see these done? We're trying to add a batch of these for transparent huge pages, and there was a similar set for KSM, so there's certainly no shortage of potential sites. -- Dave