Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760569Ab0HFH0W (ORCPT ); Fri, 6 Aug 2010 03:26:22 -0400 Received: from smtp.gentoo.org ([140.211.166.183]:56979 "EHLO smtp.gentoo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760448Ab0HFH0U (ORCPT ); Fri, 6 Aug 2010 03:26:20 -0400 From: Mike Frysinger To: linux-kernel@vger.kernel.org, Steven Rostedt , Frederic Weisbecker , Ingo Molnar Cc: uclinux-dist-devel@blackfin.uclinux.org Subject: [PATCH] tracing: extend recordmcount to better support Blackfin mcount Date: Fri, 6 Aug 2010 03:26:24 -0400 Message-Id: <1281079584-21205-1-git-send-email-vapier@gentoo.org> X-Mailer: git-send-email 1.7.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2163 Lines: 56 The mcount call on Blackfin systems includes some stack manipulation around the actual call site, so extend the build time perl script to support this. This way we can avoid doing the calculation at runtime. Signed-off-by: Mike Frysinger --- scripts/recordmcount.pl | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index f3c9c0a..2c56539 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -159,6 +159,7 @@ my $section_regex; # Find the start of a section my $function_regex; # Find the name of a function # (return offset and func name) my $mcount_regex; # Find the call site to mcount (return offset) +my $mcount_adjust; # Address adjustment to mcount offset my $alignment; # The .align value to use for $mcount_section my $section_type; # Section header plus possible alignment command my $can_use_local = 0; # If we can use local function references @@ -213,6 +214,7 @@ $section_regex = "Disassembly of section\\s+(\\S+):"; $function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:"; $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$"; $section_type = '@progbits'; +$mcount_adjust = 0; $type = ".long"; if ($arch eq "x86_64") { @@ -351,6 +353,9 @@ if ($arch eq "x86_64") { } elsif ($arch eq "microblaze") { # Microblaze calls '_mcount' instead of plain 'mcount'. $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$"; +} elsif ($arch eq "blackfin") { + $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s__mcount\$"; + $mcount_adjust = -4; } else { die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD"; } @@ -511,7 +516,7 @@ while () { } # is this a call site to mcount? If so, record it to print later if ($text_found && /$mcount_regex/) { - push(@offsets, hex $1); + push(@offsets, (hex $1) + $mcount_adjust); } } -- 1.7.2 -- 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/