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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-24 11:16:40 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-24 11:43:38 -0300 |
commit | e0dcd6fb2564c20e53ee8b7d2884a7e375fe9e75 (patch) | |
tree | 6b39707b2884f9eb93a5831ff850898a157e8ce8 /tools/perf | |
parent | 746f16ec6ae370d58ecf4370c9955bd6f35d44a3 (diff) | |
download | linux-e0dcd6fb2564c20e53ee8b7d2884a7e375fe9e75.tar.gz linux-e0dcd6fb2564c20e53ee8b7d2884a7e375fe9e75.tar.bz2 linux-e0dcd6fb2564c20e53ee8b7d2884a7e375fe9e75.zip |
perf timechart: Use zalloc and fix a couple leaks
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 <arjan@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | 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 55a3a6c6b9e7..b1a8a3b841cc 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; |