From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756882Ab2IXQD3 (ORCPT ); Mon, 24 Sep 2012 12:03:29 -0400 Received: from casper.infradead.org ([85.118.1.10]:41458 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756705Ab2IXQAC (ORCPT ); Mon, 24 Sep 2012 12:00:02 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , Arjan van de Ven , David Ahern , Frederic Weisbecker , Jiri Olsa , Mike Galbraith , Namhyung Kim , Paul Mackerras , Peter Zijlstra , Stephane Eranian Subject: [PATCH 10/30] perf timechart: Use zalloc and fix a couple leaks Date: Mon, 24 Sep 2012 12:59:24 -0300 Message-Id: <1348502384-14442-11-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.7.9.2.358.g22243 In-Reply-To: <1348502384-14442-1-git-send-email-acme@infradead.org> References: <1348502384-14442-1-git-send-email-acme@infradead.org> Content-Type: text/plain; charset="UTF-8" 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 Use zalloc for the malloc+memset open coded sequence. Fix leak on the #ifdef'ed C state handling and when detecting invalid data in p_state_change(). Cc: Arjan van de Ven Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-timechart.c | 40 ++++++++++++++-------------------------- 1 files changed, 14 insertions(+), 26 deletions(-) diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 55a3a6c..b1a8a3b 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -168,9 +168,8 @@ static struct per_pid *find_create_pid(int pid) return cursor; cursor = cursor->next; } - cursor = malloc(sizeof(struct per_pid)); + cursor = zalloc(sizeof(*cursor)); assert(cursor != NULL); - memset(cursor, 0, sizeof(struct per_pid)); cursor->pid = pid; cursor->next = all_data; all_data = cursor; @@ -195,9 +194,8 @@ static void pid_set_comm(int pid, char *comm) } c = c->next; } - c = malloc(sizeof(struct per_pidcomm)); + c = zalloc(sizeof(*c)); assert(c != NULL); - memset(c, 0, sizeof(struct per_pidcomm)); c->comm = strdup(comm); p->current = c; c->next = p->all; @@ -239,17 +237,15 @@ pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end) p = find_create_pid(pid); c = p->current; if (!c) { - c = malloc(sizeof(struct per_pidcomm)); + c = zalloc(sizeof(*c)); assert(c != NULL); - memset(c, 0, sizeof(struct per_pidcomm)); p->current = c; c->next = p->all; p->all = c; } - sample = malloc(sizeof(struct cpu_sample)); + sample = zalloc(sizeof(*sample)); assert(sample != NULL); - memset(sample, 0, sizeof(struct cpu_sample)); sample->start_time = start; sample->end_time = end; sample->type = type; @@ -373,11 +369,10 @@ static void c_state_start(int cpu, u64 timestamp, int state) static void c_state_end(int cpu, u64 timestamp) { - struct power_event *pwr; - pwr = malloc(sizeof(struct power_event)); + struct power_event *pwr = zalloc(sizeof(*pwr)); + if (!pwr) return; - memset(pwr, 0, sizeof(struct power_event)); pwr->state = cpus_cstate_state[cpu]; pwr->start_time = cpus_cstate_start_times[cpu]; @@ -392,14 +387,13 @@ static void c_state_end(int cpu, u64 timestamp) static void p_state_change(int cpu, u64 timestamp, u64 new_freq) { struct power_event *pwr; - pwr = malloc(sizeof(struct power_event)); if (new_freq > 8000000) /* detect invalid data */ return; + pwr = zalloc(sizeof(*pwr)); if (!pwr) return; - memset(pwr, 0, sizeof(struct power_event)); pwr->state = cpus_pstate_state[cpu]; pwr->start_time = cpus_pstate_start_times[cpu]; @@ -429,15 +423,13 @@ static void p_state_change(int cpu, u64 timestamp, u64 new_freq) static void sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te) { - struct wake_event *we; struct per_pid *p; struct wakeup_entry *wake = (void *)te; + struct wake_event *we = zalloc(sizeof(*we)); - we = malloc(sizeof(struct wake_event)); if (!we) return; - memset(we, 0, sizeof(struct wake_event)); we->time = timestamp; we->waker = pid; @@ -579,13 +571,12 @@ static void end_sample_processing(void) struct power_event *pwr; for (cpu = 0; cpu <= numcpus; cpu++) { - pwr = malloc(sizeof(struct power_event)); + /* C state */ +#if 0 + pwr = zalloc(sizeof(*pwr)); if (!pwr) return; - memset(pwr, 0, sizeof(struct power_event)); - /* C state */ -#if 0 pwr->state = cpus_cstate_state[cpu]; pwr->start_time = cpus_cstate_start_times[cpu]; pwr->end_time = last_time; @@ -597,10 +588,9 @@ static void end_sample_processing(void) #endif /* P state */ - pwr = malloc(sizeof(struct power_event)); + pwr = zalloc(sizeof(*pwr)); if (!pwr) return; - memset(pwr, 0, sizeof(struct power_event)); pwr->state = cpus_pstate_state[cpu]; pwr->start_time = cpus_pstate_start_times[cpu]; @@ -830,11 +820,9 @@ static void draw_process_bars(void) static void add_process_filter(const char *string) { - struct process_filter *filt; - int pid; + int pid = strtoull(string, NULL, 10); + struct process_filter *filt = malloc(sizeof(*filt)); - pid = strtoull(string, NULL, 10); - filt = malloc(sizeof(struct process_filter)); if (!filt) return; -- 1.7.1