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authorArnaldo Carvalho de Melo <acme@redhat.com>2012-09-24 11:16:40 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-09-24 11:43:38 -0300
commite0dcd6fb2564c20e53ee8b7d2884a7e375fe9e75 (patch)
tree6b39707b2884f9eb93a5831ff850898a157e8ce8
parent746f16ec6ae370d58ecf4370c9955bd6f35d44a3 (diff)
downloadlinux-linaro-stable-e0dcd6fb2564c20e53ee8b7d2884a7e375fe9e75.tar.gz
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>
-rw-r--r--tools/perf/builtin-timechart.c40
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;