From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754478AbbGXCAz (ORCPT ); Thu, 23 Jul 2015 22:00:55 -0400 Received: from casper.infradead.org ([85.118.1.10]:39881 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754451AbbGXCAx (ORCPT ); Thu, 23 Jul 2015 22:00:53 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , Borislav Petkov , Frederic Weisbecker , Jiri Olsa , Namhyung Kim , Stephane Eranian Subject: [PATCH 06/18] perf symbols: Add front end cache for DSO symbol lookup Date: Thu, 23 Jul 2015 22:58:19 -0300 Message-Id: <1437703111-4930-7-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1437703111-4930-1-git-send-email-acme@kernel.org> References: <1437703111-4930-1-git-send-email-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo Acked-by: David Ahern Cc: Adrian Hunter Cc: Borislav Petkov Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-voo94tow8wpkcc76mlkny6sc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.h | 4 ++++ tools/perf/util/symbol.c | 7 ++++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index 2fe98bb0e95b..c73276db6d6f 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -137,6 +137,10 @@ struct dso { struct rb_node rb_node; /* rbtree node sorted by long name */ struct rb_root symbols[MAP__NR_TYPES]; struct rb_root symbol_names[MAP__NR_TYPES]; + struct { + u64 addr; + struct symbol *symbol; + } last_find_result[MAP__NR_TYPES]; void *a2l; char *symsrc_filename; unsigned int a2l_fails; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 45c2e3a8316b..725640fd7cd8 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -444,7 +444,12 @@ static struct symbol *symbols__find_by_name(struct rb_root *symbols, struct symbol *dso__find_symbol(struct dso *dso, enum map_type type, u64 addr) { - return symbols__find(&dso->symbols[type], addr); + if (dso->last_find_result[type].addr != addr) { + dso->last_find_result[type].addr = addr; + dso->last_find_result[type].symbol = symbols__find(&dso->symbols[type], addr); + } + + return dso->last_find_result[type].symbol; } struct symbol *dso__first_symbol(struct dso *dso, enum map_type type) -- 2.1.0