From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751668AbdCCCqE (ORCPT ); Thu, 2 Mar 2017 21:46:04 -0500 Received: from mga14.intel.com ([192.55.52.115]:1395 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751465AbdCCCqD (ORCPT ); Thu, 2 Mar 2017 21:46:03 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,234,1484035200"; d="scan'208";a="1104232169" From: Jin Yao To: acme@kernel.org, jolsa@kernel.org Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com, kan.liang@intel.com, milian.wolff@kdab.com, Jin Yao Subject: [PATCH v4 1/5] perf report: Refactor common code in srcline.c Date: Fri, 3 Mar 2017 18:43:01 +0800 Message-Id: <1488537785-10684-2-git-send-email-yao.jin@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1488537785-10684-1-git-send-email-yao.jin@linux.intel.com> References: <1488537785-10684-1-git-send-email-yao.jin@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce dso__name() and filename_split() out of existing code because these codes will be used in several places in next patch. For filename_split(), it may also solve a potential memory leak in existing code. In existing addr2line(), sep = strchr(filename, ':'); if (sep) { *sep++ = '\0'; *file = filename; *line_nr = strtoul(sep, NULL, 0); ret = 1; } out: pclose(fp); return ret; If sep is NULL, filename is not freed or returned via file. Signed-off-by: Jin Yao Tested-by: Milian Wolff --- tools/perf/util/srcline.c | 68 +++++++++++++++++++++++++++++++---------------- 1 file changed, 45 insertions(+), 23 deletions(-) diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c index b4db3f4..2953c9f 100644 --- a/tools/perf/util/srcline.c +++ b/tools/perf/util/srcline.c @@ -12,6 +12,24 @@ bool srcline_full_filename; +static const char *dso__name(struct dso *dso) +{ + const char *dso_name; + + if (dso->symsrc_filename) + dso_name = dso->symsrc_filename; + else + dso_name = dso->long_name; + + if (dso_name[0] == '[') + return NULL; + + if (!strncmp(dso_name, "/tmp/perf-", 10)) + return NULL; + + return dso_name; +} + #ifdef HAVE_LIBBFD_SUPPORT /* @@ -207,6 +225,27 @@ void dso__free_a2l(struct dso *dso) #else /* HAVE_LIBBFD_SUPPORT */ +static int filename_split(char *filename, unsigned int *line_nr) +{ + char *sep; + + sep = strchr(filename, '\n'); + if (sep) + *sep = '\0'; + + if (!strcmp(filename, "??:0")) + return 0; + + sep = strchr(filename, ':'); + if (sep) { + *sep++ = '\0'; + *line_nr = strtoul(sep, NULL, 0); + return 1; + } + + return 0; +} + static int addr2line(const char *dso_name, u64 addr, char **file, unsigned int *line_nr, struct dso *dso __maybe_unused, @@ -216,7 +255,6 @@ static int addr2line(const char *dso_name, u64 addr, char cmd[PATH_MAX]; char *filename = NULL; size_t len; - char *sep; int ret = 0; scnprintf(cmd, sizeof(cmd), "addr2line -e %s %016"PRIx64, @@ -233,23 +271,14 @@ static int addr2line(const char *dso_name, u64 addr, goto out; } - sep = strchr(filename, '\n'); - if (sep) - *sep = '\0'; - - if (!strcmp(filename, "??:0")) { - pr_debug("no debugging info in %s\n", dso_name); + ret = filename_split(filename, line_nr); + if (ret != 1) { free(filename); goto out; } - sep = strchr(filename, ':'); - if (sep) { - *sep++ = '\0'; - *file = filename; - *line_nr = strtoul(sep, NULL, 0); - ret = 1; - } + *file = filename; + out: pclose(fp); return ret; @@ -278,15 +307,8 @@ char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym, if (!dso->has_srcline) goto out; - if (dso->symsrc_filename) - dso_name = dso->symsrc_filename; - else - dso_name = dso->long_name; - - if (dso_name[0] == '[') - goto out; - - if (!strncmp(dso_name, "/tmp/perf-", 10)) + dso_name = dso__name(dso); + if (dso_name == NULL) goto out; if (!addr2line(dso_name, addr, &file, &line, dso, unwind_inlines)) -- 2.7.4