From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754502Ab0ETRaV (ORCPT ); Thu, 20 May 2010 13:30:21 -0400 Received: from lo.gmane.org ([80.91.229.12]:57227 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753310Ab0ETRaU (ORCPT ); Thu, 20 May 2010 13:30:20 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org connect(): No such file or directory From: "Frank A. Kingswood" Subject: SCHED_OMIT_FRAME_POINTER configuration option wrong Date: Thu, 20 May 2010 18:30:07 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 88-97-16-53.dsl.zen.co.uk User-Agent: Mozilla-Thunderbird 2.0.0.22 (X11/20090706) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! The configuration option SCHED_OMIT_FRAME_POINTER seems to have gained a most unusual description in 2.6.34. 490 config SCHED_OMIT_FRAME_POINTER 491 def_bool y 492 prompt "Single-depth WCHAN output" 493 depends on X86 494 ---help--- 495 Calculate simpler /proc//wchan values. If this option 496 is disabled then wchan values will recurse back to the 497 caller function. This provides more accurate wchan values, 498 at the expense of slightly more scheduling overhead. 499 500 If in doubt, say "Y". Frank