From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757378Ab1ERQJO (ORCPT ); Wed, 18 May 2011 12:09:14 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.125]:60966 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757122Ab1ERQJJ (ORCPT ); Wed, 18 May 2011 12:09:09 -0400 X-Authority-Analysis: v=1.1 cv=NmbQexcdgr4rtO3OwYGrP5Q3rTMpacrTPhuaXkv4uP8= c=1 sm=0 a=vhdKIqpQuCYA:10 a=bu4GKeYqDlMA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=OPBmh+XkhLl+Enan7BmTLg==:17 a=20KFwNOVAAAA:8 a=VwQbUJbxAAAA:8 a=meVymXHHAAAA:8 a=XFm3MjPsTPADVGqmO6UA:9 a=wfOJobZswxOulrKmJC0A:7 a=jEp0ucaQiEUA:10 a=jeBq3FmKZ4MA:10 a=OPBmh+XkhLl+Enan7BmTLg==:117 X-Cloudmark-Score: 0 X-Originating-IP: 67.242.120.143 Message-Id: <20110518160908.680240333@goodmis.org> User-Agent: quilt/0.48-1 Date: Wed, 18 May 2011 12:08:19 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Frederic Weisbecker Subject: [PATCH 10/15] ftrace/x86: Do not trace .discard.text section References: <20110518160809.724215604@goodmis.org> Content-Disposition: inline; filename=0010-ftrace-x86-Do-not-trace-.discard.text-section.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven Rostedt The section called .discard.text has tracing attached to it and is currently ignored by ftrace. But it does include a call to the mcount stub. Adding a notrace to the code keeps gcc from adding the useless mcount caller to it. Link: http://lkml.kernel.org/r/20110421023739.243651696@goodmis.org Signed-off-by: Steven Rostedt --- arch/x86/include/asm/setup.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index db8aa19..647d8a0 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -88,7 +88,7 @@ void *extend_brk(size_t size, size_t align); * executable.) */ #define RESERVE_BRK(name,sz) \ - static void __section(.discard.text) __used \ + static void __section(.discard.text) __used notrace \ __brk_reservation_fn_##name##__(void) { \ asm volatile ( \ ".pushsection .brk_reservation,\"aw\",@nobits;" \ -- 1.7.4.4