From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756764Ab3KFOzF (ORCPT ); Wed, 6 Nov 2013 09:55:05 -0500 Received: from cdptpa-outbound-snat.email.rr.com ([107.14.166.226]:34091 "EHLO cdptpa-oedge-vip.email.rr.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932134Ab3KFOxA (ORCPT ); Wed, 6 Nov 2013 09:53:00 -0500 Message-Id: <20131106145257.749914926@goodmis.org> User-Agent: quilt/0.60-1 Date: Wed, 06 Nov 2013 09:50:46 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Frederic Weisbecker , Andrew Morton , "Paul E. McKenney" , Jamie Iles Subject: [for-next][PATCH 5/8] recordmcount.pl: Add support for __fentry__ References: <20131106145041.904349372@goodmis.org> Content-Disposition: inline; filename=0011-recordmcount.pl-Add-support-for-__fentry__.patch X-RR-Connecting-IP: 107.14.168.118:25 X-Cloudmark-Score: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jamie Iles With gcc 4.6.0 the -mfentry feature places the function profiling call at the start of the function. When this is used, the call is to __fentry__ and not mcount. This is required for Ksplice as the C version of recordmcount doesn't insert section symbols for the __mcount_loc section so we fall back to the perl version. Based on 48bb5dc6cd9d30fe0d594947563da1f8bd9abada (ftrace: Make recordmcount.c handle __fentry__). Link: http://lkml.kernel.org/r/1383648129-10724-1-git-send-email-jamie.iles@oracle.com Signed-off-by: Jamie Iles Signed-off-by: Steven Rostedt --- scripts/recordmcount.pl | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index a674fd5..d0da663 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -214,13 +214,13 @@ $local_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; $weak_regex = "^[0-9a-fA-F]+\\s+([wW])\\s+(\\S+)"; $section_regex = "Disassembly of section\\s+(\\S+):"; $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; -$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; +$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s(mcount|__fentry__)\$"; $section_type = '@progbits'; $mcount_adjust = 0; $type = ".long"; if ($arch eq "x86_64") { - $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount([+-]0x[0-9a-zA-Z]+)?\$"; + $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s(mcount|__fentry__)([+-]0x[0-9a-zA-Z]+)?\$"; $type = ".quad"; $alignment = 8; $mcount_adjust = -1; -- 1.8.4.rc3