From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752773Ab3LJJQe (ORCPT ); Tue, 10 Dec 2013 04:16:34 -0500 Received: from terminus.zytor.com ([198.137.202.10]:44023 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752642Ab3LJJQW (ORCPT ); Tue, 10 Dec 2013 04:16:22 -0500 Date: Tue, 10 Dec 2013 01:15:47 -0800 From: tip-bot for Adrian Hunter Message-ID: Cc: acme@redhat.com, eranian@google.com, mingo@redhat.com, mingo@kernel.org, a.p.zijlstra@chello.nl, efault@gmx.de, jolsa@redhat.com, fweisbec@gmail.com, ak@linux.intel.com, dsahern@gmail.com, tglx@linutronix.de, hpa@zytor.com, paulus@samba.org, linux-kernel@vger.kernel.org, namhyung@gmail.com, adrian.hunter@intel.com Reply-To: mingo@kernel.org, mingo@redhat.com, eranian@google.com, acme@redhat.com, a.p.zijlstra@chello.nl, efault@gmx.de, jolsa@redhat.com, fweisbec@gmail.com, dsahern@gmail.com, ak@linux.intel.com, tglx@linutronix.de, hpa@zytor.com, paulus@samba.org, linux-kernel@vger.kernel.org, namhyung@gmail.com, adrian.hunter@intel.com In-Reply-To: <1386055390-13757-5-git-send-email-adrian.hunter@intel.com> References: <1386055390-13757-5-git-send-email-adrian.hunter@intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf symbols: Retain bfd reference to lookup source line numbers Git-Commit-ID: 454ff00f969e515c4cbfd52718ec5e01c7d9aeef 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-4.5.1 (terminus.zytor.com [127.0.0.1]); Tue, 10 Dec 2013 01:15:54 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 454ff00f969e515c4cbfd52718ec5e01c7d9aeef Gitweb: http://git.kernel.org/tip/454ff00f969e515c4cbfd52718ec5e01c7d9aeef Author: Adrian Hunter AuthorDate: Tue, 3 Dec 2013 09:23:07 +0200 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 4 Dec 2013 13:46:36 -0300 perf symbols: Retain bfd reference to lookup source line numbers Closng and re-opening for every lookup when using libbfd to lookup source file name and line number is very very slow. Instead keep the reference on struct dso. Signed-off-by: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1386055390-13757-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.c | 1 + tools/perf/util/dso.h | 3 +++ tools/perf/util/srcline.c | 36 ++++++++++++++++++++++++++++++------ 3 files changed, 34 insertions(+), 6 deletions(-) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index af4c687c..68aa55a 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -469,6 +469,7 @@ void dso__delete(struct dso *dso) if (dso->lname_alloc) free(dso->long_name); dso_cache__free(&dso->cache); + dso__free_a2l(dso); free(dso); } diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index 9ac666a..d8613dc 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -77,6 +77,7 @@ struct dso { struct rb_root symbols[MAP__NR_TYPES]; struct rb_root symbol_names[MAP__NR_TYPES]; struct rb_root cache; + void *a2l; enum dso_kernel_type kernel; enum dso_swap_type needs_swap; enum dso_binary_type symtab_type; @@ -166,4 +167,6 @@ static inline bool dso__is_kcore(struct dso *dso) dso->data_type == DSO_BINARY_TYPE__GUEST_KCORE; } +void dso__free_a2l(struct dso *dso); + #endif /* __PERF_DSO */ diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c index 4c8e816..25b85b2 100644 --- a/tools/perf/util/srcline.c +++ b/tools/perf/util/srcline.c @@ -146,18 +146,24 @@ static void addr2line_cleanup(struct a2l_data *a2l) } static int addr2line(const char *dso_name, unsigned long addr, - char **file, unsigned int *line) + char **file, unsigned int *line, struct dso *dso) { int ret = 0; - struct a2l_data *a2l; + struct a2l_data *a2l = dso->a2l; + + if (!a2l) { + dso->a2l = addr2line_init(dso_name); + a2l = dso->a2l; + } - a2l = addr2line_init(dso_name); if (a2l == NULL) { pr_warning("addr2line_init failed for %s\n", dso_name); return 0; } a2l->addr = addr; + a2l->found = false; + bfd_map_over_sections(a2l->abfd, find_address_in_section, a2l); if (a2l->found && a2l->filename) { @@ -168,14 +174,26 @@ static int addr2line(const char *dso_name, unsigned long addr, ret = 1; } - addr2line_cleanup(a2l); return ret; } +void dso__free_a2l(struct dso *dso) +{ + struct a2l_data *a2l = dso->a2l; + + if (!a2l) + return; + + addr2line_cleanup(a2l); + + dso->a2l = NULL; +} + #else /* HAVE_LIBBFD_SUPPORT */ static int addr2line(const char *dso_name, unsigned long addr, - char **file, unsigned int *line_nr) + char **file, unsigned int *line_nr, + struct dso *dso __maybe_unused) { FILE *fp; char cmd[PATH_MAX]; @@ -219,6 +237,11 @@ out: pclose(fp); return ret; } + +void dso__free_a2l(struct dso *dso __maybe_unused) +{ +} + #endif /* HAVE_LIBBFD_SUPPORT */ char *get_srcline(struct dso *dso, unsigned long addr) @@ -237,7 +260,7 @@ char *get_srcline(struct dso *dso, unsigned long addr) if (!strncmp(dso_name, "/tmp/perf-", 10)) goto out; - if (!addr2line(dso_name, addr, &file, &line)) + if (!addr2line(dso_name, addr, &file, &line, dso)) goto out; if (asprintf(&srcline, "%s:%u", file, line) < 0) @@ -248,6 +271,7 @@ char *get_srcline(struct dso *dso, unsigned long addr) out: dso->has_srcline = 0; + dso__free_a2l(dso); return SRCLINE_UNKNOWN; }