Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759794AbYC0RIz (ORCPT ); Thu, 27 Mar 2008 13:08:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756335AbYC0RIq (ORCPT ); Thu, 27 Mar 2008 13:08:46 -0400 Received: from py-out-1112.google.com ([64.233.166.176]:1045 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756638AbYC0RIp (ORCPT ); Thu, 27 Mar 2008 13:08:45 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=co/l8yDHE4THHF0DAKtop+SRJ5TV6ockQCzr3CC9ugLbHOzmZvQxi3GEYmYPwchaD+W9Z5VYcjxfJP4a1Yu1vP+bcOaVNeXKofoOdcg74Z+ebbgHF67JIRdTssWRSzZVj+9q/LWYCmJZz49ujlqzRwUpajCgmqW3AbU+Q75kBZ4= Message-ID: <2f11576a0803271008t7574ead1s9ea285d8df57ef1@mail.gmail.com> Date: Fri, 28 Mar 2008 02:08:43 +0900 From: "KOSAKI Motohiro" To: "Ingo Molnar" Subject: Re: [patch for 2.6.26 0/7] Architecture Independent Markers Cc: "Mathieu Desnoyers" , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, "Linus Torvalds" In-Reply-To: <20080327154053.GA5890@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080327132057.449831367@polymtl.ca> <20080327154053.GA5890@elte.hu> X-Google-Sender-Auth: 7acf1e718343cd0c Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 928 Lines: 24 Hi > text data bss dec hex filename > 37642 7014 384 45040 aff0 sched.o.before > 37930 7134 384 45448 b188 sched.o.after > > 288 bytes for only 3 markers in the scheduler - that's 96 bytes added > per every marker (44 bytes of that in the fastpath). > > and the tracer codepath is now slower and more complex as well. > > A classic lose-lose situation, so let's apply this patch. Not! > > NACK-ed-by: Ingo Molnar I wonder why nobody doesn't fix this serious problem until now. and I am interesting to what difference to ftrace and marker. if I have time at next week, I will investigate the marker problem. -- 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/