From patchwork Wed Oct 27 16:24:34 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wu Zhangjin X-Patchwork-Id: 286242 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o9RGOrGB014249 for ; Wed, 27 Oct 2010 16:24:53 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757603Ab0J0QYv (ORCPT ); Wed, 27 Oct 2010 12:24:51 -0400 Received: from mail-qw0-f46.google.com ([209.85.216.46]:58950 "EHLO mail-qw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751847Ab0J0QYu (ORCPT ); Wed, 27 Oct 2010 12:24:50 -0400 Received: by qwf7 with SMTP id 7so143732qwf.19 for ; Wed, 27 Oct 2010 09:24:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:cc:subject:date :message-id:x-mailer; bh=Ecicvic6uu2TQdB4/6Su60ZbokVPBWRrV3KpfjPx31Y=; b=iwGE/7jEwq9Xx8DYYkRpuRPY2//Wf8ORzy6jsx8oyQo1b+fW+CTOZvV/gLa6+NmkMb yjgLnBWZVybPkeitfKBqTHkokpus5vRquGJ+HPNUbZ6t61kCzCQTpiAwONTEchJFLxjO EPoOsm1VLV0MUQ8Ik754YlXQbErmq+GBg5Xcs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; b=VRzEsh3e6tYgmOM0sv0pyktDM0wxxLmD06J9jaT3YUuuxkegbIIu0COAgLRWSc1yNp dmY8nFH88/EaMdpJYAXm6Q5tAFgNierE7BcCkA393/H66GfNkd1XmlVtrbBVYGWapFwa BO0xunaOZWGQpF58mvZuqxN4CD26vN6dxoJfw= Received: by 10.224.204.72 with SMTP id fl8mr2540714qab.173.1288196690090; Wed, 27 Oct 2010 09:24:50 -0700 (PDT) Received: from localhost.localdomain ([61.48.71.2]) by mx.google.com with ESMTPS id l14sm8780876qck.29.2010.10.27.09.24.43 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 27 Oct 2010 09:24:49 -0700 (PDT) From: Wu Zhangjin To: rostedt@goodmis.org, linux-kernel@vger.kernel.org Cc: mingo@elte.hu, John Reiser , Sam Ravnborg , linux-kbuild , Michal Marek , Wu Zhangjin Subject: [v2 PATCH] ftrace: Speed up recordmcount Date: Thu, 28 Oct 2010 00:24:34 +0800 Message-Id: <3dc8cddf022eb7024f9f2cf857529a15bee8999a.1288196498.git.wuzhangjin@gmail.com> X-Mailer: git-send-email 1.7.1 Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 27 Oct 2010 16:24:53 +0000 (UTC) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 5ad25e1..0ad6108 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -214,17 +214,22 @@ ifdef BUILD_C_RECORDMCOUNT # The empty.o file is created in the make process in order to determine # the target endianness and word size. It is made before all other C # files, including recordmcount. -cmd_record_mcount = if [ $(@) != "scripts/mod/empty.o" ]; then \ - $(objtree)/scripts/recordmcount "$(@)"; \ - fi; +sub_cmd_record_mcount = \ + if [ $(@) != "scripts/mod/empty.o" ]; then \ + $(objtree)/scripts/recordmcount "$(@)"; \ + fi; else -cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ +sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \ "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \ "$(if $(CONFIG_64BIT),64,32)" \ "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \ "$(LD)" "$(NM)" "$(RM)" "$(MV)" \ "$(if $(part-of-module),1,0)" "$(@)"; endif +cmd_record_mcount = \ + if [ "$(findstring -pg,$(_c_flags))" == "-pg" ]; then \ + $(sub_cmd_record_mcount) \ + fi; endif define rule_cc_o_c