From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757033Ab3CULPd (ORCPT ); Thu, 21 Mar 2013 07:15:33 -0400 Received: from terminus.zytor.com ([198.137.202.10]:56368 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754606Ab3CULPb (ORCPT ); Thu, 21 Mar 2013 07:15:31 -0400 Date: Thu, 21 Mar 2013 04:13:56 -0700 From: tip-bot for Namhyung Kim Message-ID: Cc: acme@redhat.com, linux-kernel@vger.kernel.org, paulus@samba.org, hpa@zytor.com, mingo@kernel.org, andi@firstfloor.org, a.p.zijlstra@chello.nl, penberg@kernel.org, namhyung.kim@lge.com, namhyung@kernel.org, jolsa@redhat.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, paulus@samba.org, linux-kernel@vger.kernel.org, acme@redhat.com, andi@firstfloor.org, a.p.zijlstra@chello.nl, penberg@kernel.org, namhyung.kim@lge.com, tglx@linutronix.de, namhyung@kernel.org, jolsa@redhat.com In-Reply-To: <1362462812-30885-3-git-send-email-namhyung@kernel.org> References: <1362462812-30885-3-git-send-email-namhyung@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf annotate: Add a comment on the symbol__parse_objdump_line() Git-Commit-ID: 3aec150af3de6c00570bdacf45bf5a999ab9cf1d X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (terminus.zytor.com [127.0.0.1]); Thu, 21 Mar 2013 04:14:07 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 3aec150af3de6c00570bdacf45bf5a999ab9cf1d Gitweb: http://git.kernel.org/tip/3aec150af3de6c00570bdacf45bf5a999ab9cf1d Author: Namhyung Kim AuthorDate: Tue, 5 Mar 2013 14:53:22 +0900 Committer: Arnaldo Carvalho de Melo CommitDate: Fri, 15 Mar 2013 13:06:04 -0300 perf annotate: Add a comment on the symbol__parse_objdump_line() The symbol__parse_objdump_line() parses result of the objdump run but it's hard to follow if one doesn't know the output format of the objdump. Add a head comment on the function to help her. Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Pekka Enberg Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1362462812-30885-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/annotate.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 7eac5f0..fa347b1 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -689,6 +689,26 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st return 0; } +/* + * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw) + * which looks like following + * + * 0000000000415500 <_init>: + * 415500: sub $0x8,%rsp + * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8> + * 41550b: test %rax,%rax + * 41550e: je 415515 <_init+0x15> + * 415510: callq 416e70 <__gmon_start__@plt> + * 415515: add $0x8,%rsp + * 415519: retq + * + * it will be parsed and saved into struct disasm_line as + * + * + * The offset will be a relative offset from the start of the symbol and -1 + * means that it's not a disassembly line so should be treated differently. + * The ops.raw part will be parsed further according to type of the instruction. + */ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, FILE *file, size_t privsize) {