From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757999AbZB0IVI (ORCPT ); Fri, 27 Feb 2009 03:21:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753478AbZB0IUy (ORCPT ); Fri, 27 Feb 2009 03:20:54 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:57698 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752322AbZB0IUy (ORCPT ); Fri, 27 Feb 2009 03:20:54 -0500 Date: Fri, 27 Feb 2009 09:20:35 +0100 From: Ingo Molnar To: Andrew Morton Cc: Frederic Weisbecker , Linus Torvalds , linux-kernel@vger.kernel.org, Steven Rostedt , Lai Jiangshan , Peter Zijlstra Subject: Re: [PATCH][RFC] vsprintf: unify the format decoding layer for its 3 users Message-ID: <20090227082035.GD3609@elte.hu> References: <20090226130243.GA22460@elte.hu> <20090226170524.GB5889@nowhere> <20090226174303.GC29439@elte.hu> <20090226174547.GC5889@nowhere> <20090226175225.GA4527@elte.hu> <20090226183415.GE5889@nowhere> <20090226185208.GA6658@nowhere> <20090226185635.GA12895@elte.hu> <20090227061936.GA5318@nowhere> <20090226224656.5785de9e.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090226224656.5785de9e.akpm@linux-foundation.org> User-Agent: Mutt/1.5.18 (2008-05-17) 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, 27 Feb 2009 07:19:37 +0100 Frederic Weisbecker wrote: > > > An new optimization is making its way to ftrace. Its purpose > > is to make ftrace_printk() consuming less memory and be > > faster. > > > > Written by Lai Jiangshan, the approach is to delay the > > formatting job from tracing time to output time. Currently, > > a call to ftrace_printk will format the whole string and > > insert it into the ring buffer. > > It does that? eek. hm, did you expect something else from a printf based interface? Ingo