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Date: Tue, 23 Feb 2010 16:56:39 +0100
From: Jiri Olsa <jolsa@...hat.com>
To: rostedt@...dmis.org
Cc: linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH][trace-cmd] minor fixies
hi,
I was looking through the sources and spot few bugs.
wbr,
jirka
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
---
parse-events.c | 11 ++++-------
trace-cmd.c | 35 ++++++++++++++++++++---------------
trace-filter.c | 14 ++++++++------
trace-input.c | 2 +-
trace-output.c | 3 ---
trace-record.c | 3 ---
trace-util.c | 3 ---
7 files changed, 33 insertions(+), 38 deletions(-)
diff --git a/parse-events.c b/parse-events.c
index b483e85..43adc76 100644
--- a/parse-events.c
+++ b/parse-events.c
@@ -68,8 +68,6 @@ struct print_arg *alloc_arg(void)
struct print_arg *arg;
arg = malloc_or_die(sizeof(*arg));
- if (!arg)
- return NULL;
memset(arg, 0, sizeof(*arg));
return arg;
@@ -570,12 +568,13 @@ static void add_event(struct pevent *pevent, struct event_format *event)
if (!pevent->events)
pevent->events = malloc_or_die(sizeof(event));
- else
+ else {
pevent->events =
realloc(pevent->events, sizeof(event) *
(pevent->nr_events + 1));
- if (!pevent->events)
- die("Can not allocate events");
+ if (!pevent->events)
+ die("Can not allocate events");
+ }
for (i = 0; i < pevent->nr_events; i++) {
if (pevent->events[i]->id > event->id)
@@ -3855,8 +3854,6 @@ int pevent_parse_event(struct pevent *pevent,
init_input_buf(buf, size);
event = alloc_event();
- if (!event)
- return -ENOMEM;
event->name = event_read_name();
if (!event->name)
diff --git a/trace-cmd.c b/trace-cmd.c
index e89362d..01cf563 100644
--- a/trace-cmd.c
+++ b/trace-cmd.c
@@ -226,7 +226,7 @@ static int set_ftrace(int set)
int fd;
char *val = set ? "1" : "0";
- /* if ftace_enable does not exist, simply ignore it */
+ /* if ftrace_enable does not exist, simply ignore it */
fd = stat(path, &buf);
if (fd < 0)
return -ENODEV;
@@ -356,8 +356,6 @@ static char *get_tracing_file(const char *name)
}
file = malloc_or_die(strlen(tracing) + strlen(name) + 2);
- if (!file)
- return NULL;
sprintf(file, "%s/%s", tracing, name);
return file;
@@ -446,6 +444,22 @@ static void show_options(void)
fclose(fp);
}
+static void show_stats(void)
+{
+ int cpu;
+ struct trace_seq s;
+
+ printf("Buffer statistics:\n\n");
+ for (cpu = 0; cpu < cpu_count; cpu++) {
+ trace_seq_init(&s);
+ trace_seq_printf(&s, "CPU: %d\n", cpu);
+ tracecmd_stat_cpu(&s, cpu);
+ trace_seq_do_printf(&s);
+ printf("\n");
+ }
+
+}
+
static void set_option(const char *option)
{
FILE *fp;
@@ -1096,9 +1110,10 @@ void usage(char **argv)
" Disables the tracer (may reset trace file)\n"
" Used in conjunction with start\n"
"\n"
- " %s report [-i file] [--cpu cpu] [-e][-f][-l][-P][-E][-F filter][-v]\n"
+ " %s report [-i file] [--cpu cpu] [-e][-p][-f][-l][-P][-E][-F filter][-v]\n"
" -i input file [default trace.dat]\n"
" -e show file endianess\n"
+ " -p show page size\n"
" -f show function list\n"
" -P show printk list\n"
" -E show event files stored\n"
@@ -1137,7 +1152,6 @@ int main (int argc, char **argv)
const char *option;
struct event_list *event;
struct event_list *last_event;
- struct trace_seq s;
int disable = 0;
int plug = 0;
int events = 0;
@@ -1147,7 +1161,6 @@ int main (int argc, char **argv)
int run_command = 0;
int neg_event = 0;
int fset;
- int cpu;
int c;
@@ -1385,6 +1398,7 @@ int main (int argc, char **argv)
sleep(10);
}
+ show_stats();
disable_tracing();
}
@@ -1393,15 +1407,6 @@ int main (int argc, char **argv)
record_data();
delete_thread_data();
- printf("Buffer statistics:\n\n");
- for (cpu = 0; cpu < cpu_count; cpu++) {
- trace_seq_init(&s);
- trace_seq_printf(&s, "CPU: %d\n", cpu);
- tracecmd_stat_cpu(&s, cpu);
- trace_seq_do_printf(&s);
- printf("\n");
- }
-
exit(0);
return 0;
diff --git a/trace-filter.c b/trace-filter.c
index faf1e89..c214d25 100644
--- a/trace-filter.c
+++ b/trace-filter.c
@@ -2015,10 +2015,11 @@ static void add_system_str(gchar ***systems, char *system, int count)
if (!count)
*systems = malloc_or_die(sizeof(char *) * 2);
- else
+ else {
*systems = realloc(*systems, sizeof(char *) * (count + 2));
- if (!*systems)
- die("Can't allocate systems");
+ if (!*systems)
+ die("Can't allocate systems");
+ }
(*systems)[count] = system;
(*systems)[count+1] = NULL;
@@ -2031,10 +2032,11 @@ static void add_event_int(gint **events, gint event, int count)
if (!count)
*events = malloc_or_die(sizeof(gint) * 2);
- else
+ else {
*events = realloc(*events, sizeof(gint) * (count + 2));
- if (!*events)
- die("Can't allocate events");
+ if (!*events)
+ die("Can't allocate events");
+ }
(*events)[count] = event;
(*events)[count+1] = -1;
diff --git a/trace-input.c b/trace-input.c
index ecf86e4..cb8a64d 100644
--- a/trace-input.c
+++ b/trace-input.c
@@ -92,7 +92,7 @@ static int do_read(struct tracecmd_input *handle, void *data, int size)
int r;
do {
- r = read(handle->fd, data, size - tot);
+ r = read(handle->fd, data + tot, size - tot);
tot += r;
if (!r)
diff --git a/trace-output.c b/trace-output.c
index a59099d..4386b5b 100644
--- a/trace-output.c
+++ b/trace-output.c
@@ -175,9 +175,6 @@ static char *get_tracing_file(struct tracecmd_output *handle, const char *name)
return NULL;
file = malloc_or_die(strlen(tracing) + strlen(name) + 2);
- if (!file)
- return NULL;
-
sprintf(file, "%s/%s", tracing, name);
return file;
}
diff --git a/trace-record.c b/trace-record.c
index 8317320..cbcfff9 100644
--- a/trace-record.c
+++ b/trace-record.c
@@ -64,9 +64,6 @@ struct tracecmd_recorder *tracecmd_create_recorder(const char *file, int cpu)
int ret;
recorder = malloc_or_die(sizeof(*recorder));
- if (!recorder)
- return NULL;
-
recorder->cpu = cpu;
/* Init to know what to free and release */
diff --git a/trace-util.c b/trace-util.c
index 6854977..435c05d 100644
--- a/trace-util.c
+++ b/trace-util.c
@@ -270,9 +270,6 @@ char *tracecmd_find_tracing_dir(void)
}
tracing_dir = malloc_or_die(strlen(debugfs) + 9);
- if (!tracing_dir)
- return NULL;
-
sprintf(tracing_dir, "%s/tracing", debugfs);
return tracing_dir;
--
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