Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756056Ab3ILUqX (ORCPT ); Thu, 12 Sep 2013 16:46:23 -0400 Received: from mail-ee0-f43.google.com ([74.125.83.43]:47472 "EHLO mail-ee0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752208Ab3ILUqW (ORCPT ); Thu, 12 Sep 2013 16:46:22 -0400 Date: Thu, 12 Sep 2013 22:46:18 +0200 From: Ingo Molnar To: Arnaldo Carvalho de Melo Cc: David Ahern , Linus Torvalds , Linux Kernel Mailing List , Peter Zijlstra , Thomas Gleixner , Andrew Morton Subject: Re: [GIT PULL] perf fixes Message-ID: <20130912204618.GA3262@gmail.com> References: <20130912133855.GA23780@gmail.com> <20130912184341.GA11400@ghostprotocols.net> <52321CE4.1080804@gmail.com> <20130912201855.GC32644@gmail.com> <20130912203831.GD11400@ghostprotocols.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130912203831.GD11400@ghostprotocols.net> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1825 Lines: 54 * Arnaldo Carvalho de Melo wrote: > Em Thu, Sep 12, 2013 at 10:18:55PM +0200, Ingo Molnar escreveu: > > * David Ahern wrote: > > > > > On 9/12/13 11:43 AM, Arnaldo Carvalho de Melo wrote: > > > > > > Its something that annoys me as well, but not so much as to make me > > > > figure out how to make those be done only if some source file changed. > > > > > > Jiri and I have both taken stabs at a config-based build rather than > > > probing. Just need to finish it. > > > > Mind outlining the approach you are thinking about? > > > > Firstly, please don't even think about autotools. (Just forget it exists.) > > hehe, no, that wasn't considered. /phew! :-) > > Secondly, the way perf tries to build by auto-detecting the build > > environment and auto-disabling bits it cannot build just yet is pretty > > powerful. The core bits will build on just about any system, and our > > fallbacks are really good. > > That would remain as: > > make -C tools/perf autoconfig > > > The result is that perf will build on just about any random system, > > without the user having to install any dependency. It would be really > > sad to lose that aspect. > > we will not But it would be nice to keep building as simple as 'make'. So I don't think splitting out the feature tests into a separate pass, to be done manually by the user, is a step forward. Speeding them up by caching their results, while cleaning up the presentation of the testcases, on the other hand, would be a (big!) step forward. Thanks, Ingo -- 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/