From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757981AbdACPKk (ORCPT ); Tue, 3 Jan 2017 10:10:40 -0500 Received: from mga03.intel.com ([134.134.136.65]:50684 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757572AbdACPIm (ORCPT ); Tue, 3 Jan 2017 10:08:42 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,455,1477983600"; d="scan'208";a="49601973" From: Andi Kleen To: acme@kernel.org Cc: jolsa@kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, Andi Kleen Subject: [PATCH 01/11] perf, tools: Factor out scale conversion code Date: Tue, 3 Jan 2017 07:08:23 -0800 Message-Id: <20170103150833.6694-2-andi@firstfloor.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170103150833.6694-1-andi@firstfloor.org> References: <20170103150833.6694-1-andi@firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andi Kleen Move the scale factor parsing code to an own function to reuse it in an upcoming patch. v2: Return error in case strdup returns NULL. Signed-off-by: Andi Kleen squash! perf, tools: Factor out scale conversion code --- tools/perf/util/pmu.c | 64 ++++++++++++++++++++++++++++----------------------- 1 file changed, 35 insertions(+), 29 deletions(-) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index dc6ccaa4e927..29c254dd7380 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -94,32 +94,10 @@ static int pmu_format(const char *name, struct list_head *format) return 0; } -static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) +static int convert_scale(const char *scale, char **end, double *sval) { - struct stat st; - ssize_t sret; - char scale[128]; - int fd, ret = -1; - char path[PATH_MAX]; char *lc; - - snprintf(path, PATH_MAX, "%s/%s.scale", dir, name); - - fd = open(path, O_RDONLY); - if (fd == -1) - return -1; - - if (fstat(fd, &st) < 0) - goto error; - - sret = read(fd, scale, sizeof(scale)-1); - if (sret < 0) - goto error; - - if (scale[sret - 1] == '\n') - scale[sret - 1] = '\0'; - else - scale[sret] = '\0'; + int ret = 0; /* * save current locale @@ -133,8 +111,8 @@ static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char * */ lc = strdup(lc); if (!lc) { - ret = -ENOMEM; - goto error; + ret = -1; + goto out; } /* @@ -144,14 +122,42 @@ static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char * */ setlocale(LC_NUMERIC, "C"); - alias->scale = strtod(scale, NULL); + *sval = strtod(scale, end); +out: /* restore locale */ setlocale(LC_NUMERIC, lc); - free(lc); + return ret; +} + +static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) +{ + struct stat st; + ssize_t sret; + char scale[128]; + int fd, ret = -1; + char path[PATH_MAX]; + + snprintf(path, PATH_MAX, "%s/%s.scale", dir, name); + + fd = open(path, O_RDONLY); + if (fd == -1) + return -1; + + if (fstat(fd, &st) < 0) + goto error; + + sret = read(fd, scale, sizeof(scale)-1); + if (sret < 0) + goto error; + + if (scale[sret - 1] == '\n') + scale[sret - 1] = '\0'; + else + scale[sret] = '\0'; - ret = 0; + ret = convert_scale(scale, NULL, &alias->scale); error: close(fd); return ret; -- 2.9.3