From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01665C43387 for ; Wed, 9 Jan 2019 07:12:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C0B6720821 for ; Wed, 9 Jan 2019 07:12:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729811AbfAIHMI (ORCPT ); Wed, 9 Jan 2019 02:12:08 -0500 Received: from terminus.zytor.com ([198.137.202.136]:50327 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725835AbfAIHMI (ORCPT ); Wed, 9 Jan 2019 02:12:08 -0500 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x097BLgC3855589 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 8 Jan 2019 23:11:21 -0800 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x097BItD3855576; Tue, 8 Jan 2019 23:11:18 -0800 Date: Tue, 8 Jan 2019 23:11:18 -0800 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Florian Fainelli Message-ID: Cc: tmricht@linux.ibm.com, ravi.bangoria@linux.ibm.com, acme@redhat.com, f.fainelli@gmail.com, jolsa@kernel.org, tglx@linutronix.de, kim.phillips@arm.com, gregkh@linuxfoundation.org, l.stach@pengutronix.de, alexander.shishkin@linux.intel.com, rmk+kernel@armlinux.org.uk, cphealy@gmail.com, peterz@infradead.org, linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, namhyung@kernel.org Reply-To: acme@redhat.com, f.fainelli@gmail.com, tmricht@linux.ibm.com, ravi.bangoria@linux.ibm.com, l.stach@pengutronix.de, jolsa@kernel.org, kim.phillips@arm.com, gregkh@linuxfoundation.org, tglx@linutronix.de, alexander.shishkin@linux.intel.com, rmk+kernel@armlinux.org.uk, cphealy@gmail.com, peterz@infradead.org, hpa@zytor.com, mingo@kernel.org, linux-kernel@vger.kernel.org, namhyung@kernel.org In-Reply-To: <20181221034337.26663-2-f.fainelli@gmail.com> References: <20181221034337.26663-2-f.fainelli@gmail.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf tools: Make find_vdso_map() more modular Git-Commit-ID: 011532379b7c2de6757e129037bdfc8d704bce23 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 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 011532379b7c2de6757e129037bdfc8d704bce23 Gitweb: https://git.kernel.org/tip/011532379b7c2de6757e129037bdfc8d704bce23 Author: Florian Fainelli AuthorDate: Thu, 20 Dec 2018 19:43:36 -0800 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 8 Jan 2019 13:28:13 -0300 perf tools: Make find_vdso_map() more modular In preparation for checking that the vectors page on the ARM architecture, refactor the find_vdso_map() function to accept finding an arbitrary string and create a dedicated helper function for that under util/find-map.c and update the filename to find-map.c and all references to it: perf-read-vdso.c and util/vdso.c. Signed-off-by: Florian Fainelli Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Chris Healy Cc: Greg Kroah-Hartman Cc: Kim Phillips Cc: Lucas Stach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Russell King Cc: Thomas Gleixner Cc: Thomas Richter Link: http://lkml.kernel.org/r/20181221034337.26663-2-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile.perf | 4 ++-- tools/perf/perf-read-vdso.c | 6 +++--- tools/perf/util/{find-vdso-map.c => find-map.c} | 7 +++---- tools/perf/util/vdso.c | 6 +++--- 4 files changed, 11 insertions(+), 12 deletions(-) diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 2921f829a0f4..0ee6795d82cc 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -662,12 +662,12 @@ $(OUTPUT)perf-%: %.o $(PERFLIBS) $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $(LDFLAGS) $(filter %.o,$^) $(LIBS) ifndef NO_PERF_READ_VDSO32 -$(OUTPUT)perf-read-vdso32: perf-read-vdso.c util/find-vdso-map.c +$(OUTPUT)perf-read-vdso32: perf-read-vdso.c util/find-map.c $(QUIET_CC)$(CC) -m32 $(filter -static,$(LDFLAGS)) -Wall -Werror -o $@ perf-read-vdso.c endif ifndef NO_PERF_READ_VDSOX32 -$(OUTPUT)perf-read-vdsox32: perf-read-vdso.c util/find-vdso-map.c +$(OUTPUT)perf-read-vdsox32: perf-read-vdso.c util/find-map.c $(QUIET_CC)$(CC) -mx32 $(filter -static,$(LDFLAGS)) -Wall -Werror -o $@ perf-read-vdso.c endif diff --git a/tools/perf/perf-read-vdso.c b/tools/perf/perf-read-vdso.c index 8c0ca0cc428f..aaa5210ea84a 100644 --- a/tools/perf/perf-read-vdso.c +++ b/tools/perf/perf-read-vdso.c @@ -5,17 +5,17 @@ #define VDSO__MAP_NAME "[vdso]" /* - * Include definition of find_vdso_map() also used in util/vdso.c for + * Include definition of find_map() also used in util/vdso.c for * building perf. */ -#include "util/find-vdso-map.c" +#include "util/find-map.c" int main(void) { void *start, *end; size_t size, written; - if (find_vdso_map(&start, &end)) + if (find_map(&start, &end, VDSO__MAP_NAME)) return 1; size = end - start; diff --git a/tools/perf/util/find-vdso-map.c b/tools/perf/util/find-map.c similarity index 71% rename from tools/perf/util/find-vdso-map.c rename to tools/perf/util/find-map.c index d7823e3508fc..7b2300588ece 100644 --- a/tools/perf/util/find-vdso-map.c +++ b/tools/perf/util/find-map.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -static int find_vdso_map(void **start, void **end) +static int find_map(void **start, void **end, const char *name) { FILE *maps; char line[128]; @@ -7,7 +7,7 @@ static int find_vdso_map(void **start, void **end) maps = fopen("/proc/self/maps", "r"); if (!maps) { - fprintf(stderr, "vdso: cannot open maps\n"); + fprintf(stderr, "cannot open maps\n"); return -1; } @@ -21,8 +21,7 @@ static int find_vdso_map(void **start, void **end) if (m < 0) continue; - if (!strncmp(&line[m], VDSO__MAP_NAME, - sizeof(VDSO__MAP_NAME) - 1)) + if (!strncmp(&line[m], name, strlen(name))) found = 1; } diff --git a/tools/perf/util/vdso.c b/tools/perf/util/vdso.c index 741af209b19d..3702cba11d7d 100644 --- a/tools/perf/util/vdso.c +++ b/tools/perf/util/vdso.c @@ -18,10 +18,10 @@ #include "debug.h" /* - * Include definition of find_vdso_map() also used in perf-read-vdso.c for + * Include definition of find_map() also used in perf-read-vdso.c for * building perf-read-vdso32 and perf-read-vdsox32. */ -#include "find-vdso-map.c" +#include "find-map.c" #define VDSO__TEMP_FILE_NAME "/tmp/perf-vdso.so-XXXXXX" @@ -76,7 +76,7 @@ static char *get_file(struct vdso_file *vdso_file) if (vdso_file->found) return vdso_file->temp_file_name; - if (vdso_file->error || find_vdso_map(&start, &end)) + if (vdso_file->error || find_map(&start, &end, VDSO__MAP_NAME)) return NULL; size = end - start;