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perf tools: Get rid of malloc_or_die() in trace-event-info.c 

Check return value of malloc and fail if NULL.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1363850332-25297-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2013-03-21 16:18:45 +09:00 committed by Arnaldo Carvalho de Melo
parent 454f8c7d26
commit 5a6fd27ad7
1 changed files with 30 additions and 18 deletions
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48
tools/perf/util/trace-event-info.c
View File

@ -47,16 +47,6 @@ static const char *output_file = "trace.info";
static int output_fd;
static void *malloc_or_die(unsigned int size)
{
void *data;
data = malloc(size);
if (!data)
die("malloc");
return data;
}
static const char *find_debugfs(void)
{
const char *path = perf_debugfs_mount(NULL);
@ -209,7 +199,7 @@ static bool name_in_tp_list(char *sys, struct tracepoint_path *tps)
return false;
}
static void copy_event_system(const char *sys, struct tracepoint_path *tps)
static int copy_event_system(const char *sys, struct tracepoint_path *tps)
{
struct dirent *dent;
struct stat st;
@ -217,6 +207,7 @@ static void copy_event_system(const char *sys, struct tracepoint_path *tps)
DIR *dir;
int count = 0;
int ret;
int err;
dir = opendir(sys);
if (!dir)
@ -228,7 +219,11 @@ static void copy_event_system(const char *sys, struct tracepoint_path *tps)
strcmp(dent->d_name, "..") == 0 ||
!name_in_tp_list(dent->d_name, tps))
continue;
format = malloc_or_die(strlen(sys) + strlen(dent->d_name) + 10);
format = malloc(strlen(sys) + strlen(dent->d_name) + 10);
if (!format) {
err = -ENOMEM;
goto out;
}
sprintf(format, "%s/%s/format", sys, dent->d_name);
ret = stat(format, &st);
free(format);
@ -246,16 +241,22 @@ static void copy_event_system(const char *sys, struct tracepoint_path *tps)
strcmp(dent->d_name, "..") == 0 ||
!name_in_tp_list(dent->d_name, tps))
continue;
format = malloc_or_die(strlen(sys) + strlen(dent->d_name) + 10);
format = malloc(strlen(sys) + strlen(dent->d_name) + 10);
if (!format) {
err = -ENOMEM;
goto out;
}
sprintf(format, "%s/%s/format", sys, dent->d_name);
ret = stat(format, &st);
if (ret >= 0)
record_file(format, 8);
free(format);
}
err = 0;
out:
closedir(dir);
return err;
}
static void read_ftrace_files(struct tracepoint_path *tps)
@ -282,7 +283,7 @@ static bool system_in_tp_list(char *sys, struct tracepoint_path *tps)
return false;
}
static void read_event_files(struct tracepoint_path *tps)
static int read_event_files(struct tracepoint_path *tps)
{
struct dirent *dent;
struct stat st;
@ -291,6 +292,7 @@ static void read_event_files(struct tracepoint_path *tps)
DIR *dir;
int count = 0;
int ret;
int err;
path = get_tracing_file("events");
if (!path)
@ -320,7 +322,11 @@ static void read_event_files(struct tracepoint_path *tps)
strcmp(dent->d_name, "ftrace") == 0 ||
!system_in_tp_list(dent->d_name, tps))
continue;
sys = malloc_or_die(strlen(path) + strlen(dent->d_name) + 2);
sys = malloc(strlen(path) + strlen(dent->d_name) + 2);
if (!sys) {
err = -ENOMEM;
goto out;
}
sprintf(sys, "%s/%s", path, dent->d_name);
ret = stat(sys, &st);
if (ret >= 0) {
@ -329,9 +335,12 @@ static void read_event_files(struct tracepoint_path *tps)
}
free(sys);
}
err = 0;
out:
closedir(dir);
put_tracing_file(path);
return err;
}
static void read_proc_kallsyms(void)
@ -463,7 +472,10 @@ struct tracing_data *tracing_data_get(struct list_head *pattrs,
if (!tps)
return NULL;
tdata = malloc_or_die(sizeof(*tdata));
tdata = malloc(sizeof(*tdata));
if (!tdata)
return NULL;
tdata->temp = temp;
tdata->size = 0;