On 01/30/2017 06:08 PM, Jiri Olsa wrote:
On Mon, Jan 30, 2017 at 05:35:28PM +0900, Taeung Song wrote:
SNIP
+#define for_each_event_system(dir, dent, tps) \
+ while ((dent = readdir(dir))) \
+ if (dent->d_type == DT_DIR && \
+ (strcmp(dent->d_name, ".")) && \
+ (strcmp(dent->d_name, "..")) && \
+ (name_in_tp_list(dent->d_name, tps)))
+
static int copy_event_system(const char *sys, struct tracepoint_path *tps)
{
struct dirent *dent;
@@ -186,12 +193,7 @@ static int copy_event_system(const char *sys, struct
tracepoint_path *tps)
return -errno;
}
- while ((dent = readdir(dir))) {
- if (dent->d_type != DT_DIR ||
- strcmp(dent->d_name, ".") == 0 ||
- strcmp(dent->d_name, "..") == 0 ||
- !name_in_tp_list(dent->d_name, tps))
- continue;
+ for_each_event_system(dir, dent, tps) {
if (asprintf(&format, "%s/%s/format", sys, dent->d_name) < 0) {
err = -ENOMEM;
goto out;
@@ -210,12 +212,7 @@ static int copy_event_system(const char *sys, struct
tracepoint_path *tps)
}
rewinddir(dir);
- while ((dent = readdir(dir))) {
- if (dent->d_type != DT_DIR ||
- strcmp(dent->d_name, ".") == 0 ||
- strcmp(dent->d_name, "..") == 0 ||
- !name_in_tp_list(dent->d_name, tps))
- continue;
+ for_each_event_system(dir, dent, tps) {
if (asprintf(&format, "%s/%s/format", sys, dent->d_name) < 0) {
err = -ENOMEM;
goto out;
@@ -266,6 +263,14 @@ static bool system_in_tp_list(char *sys, struct
tracepoint_path *tps)
return false;
}
+#define for_each_event_file(dir, dent, tps) \
+ while ((dent = readdir(dir))) \
+ if (dent->d_type == DT_DIR && \
+ (strcmp(dent->d_name, ".")) && \
+ (strcmp(dent->d_name, "..")) && \
+ (strcmp(dent->d_name, "ftrace")) && \
+ (system_in_tp_list(dent->d_name, tps)))
looks almost the same as for_each_event_system macro,
what's the difference other than 'ftrace' check?
Little thing.
In parse-events.c for_each_event macro contains
tp_event_has_id() function But this function isn't used in
util/trace-event-info.c
also why's one 'file' and the other 'system'? looks
Just, I follow the name of each function that use the macros..
like we coud have just one macro in here
I understood. :)
How about this ?
diff --git a/tools/perf/util/trace-event-info.c
b/tools/perf/util/trace-event-info.c
index ceb0e27..fb6d95d 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -170,6 +170,12 @@ static bool name_in_tp_list(char *sys, struct
tracepoint_path *tps)
return false;
}
+#define for_each_event(dir, dent, tps) \
+ while ((dent = readdir(dir))) \
+ if (dent->d_type == DT_DIR && \
+ (strcmp(dent->d_name, ".")) && \
+ (strcmp(dent->d_name, ".."))) \
+
static int copy_event_system(const char *sys, struct tracepoint_path *tps)
{
struct dirent *dent;
@@ -186,12 +192,10 @@ static int copy_event_system(const char *sys,
struct tracepoint_path *tps)
return -errno;
}
- while ((dent = readdir(dir))) {
- if (dent->d_type != DT_DIR ||
- strcmp(dent->d_name, ".") == 0 ||
- strcmp(dent->d_name, "..") == 0 ||
- !name_in_tp_list(dent->d_name, tps))
+ for_each_event(dir, dent, tps) {
+ if (!name_in_tp_list(dent->d_name, tps))
continue;
+
if (asprintf(&format, "%s/%s/format", sys,
dent->d_name) < 0) {
err = -ENOMEM;
goto out;
@@ -210,12 +214,10 @@ static int copy_event_system(const char *sys,
struct tracepoint_path *tps)
}
rewinddir(dir);
- while ((dent = readdir(dir))) {
- if (dent->d_type != DT_DIR ||
- strcmp(dent->d_name, ".") == 0 ||
- strcmp(dent->d_name, "..") == 0 ||
- !name_in_tp_list(dent->d_name, tps))
+ for_each_event(dir, dent, tps) {
+ if (!name_in_tp_list(dent->d_name, tps))
continue;
+
if (asprintf(&format, "%s/%s/format", sys,
dent->d_name) < 0) {
err = -ENOMEM;
goto out;
@@ -290,13 +292,11 @@ static int record_event_files(struct
tracepoint_path *tps)
goto out;
}
- while ((dent = readdir(dir))) {
- if (dent->d_type != DT_DIR ||
- strcmp(dent->d_name, ".") == 0 ||
- strcmp(dent->d_name, "..") == 0 ||
- strcmp(dent->d_name, "ftrace") == 0 ||
+ for_each_event(dir, dent, tps) {
+ if (!strcmp(dent->d_name, "ftrace") ||
!system_in_tp_list(dent->d_name, tps))
continue;
+
count++;
}
@@ -307,13 +307,11 @@ static int record_event_files(struct
tracepoint_path *tps)
}
rewinddir(dir);
- while ((dent = readdir(dir))) {
- if (dent->d_type != DT_DIR ||
- strcmp(dent->d_name, ".") == 0 ||
- strcmp(dent->d_name, "..") == 0 ||
- strcmp(dent->d_name, "ftrace") == 0 ||
+ for_each_event(dir, dent, tps) {
+ if (!strcmp(dent->d_name, "ftrace") ||
!system_in_tp_list(dent->d_name, tps))
continue;
+
if (asprintf(&sys, "%s/%s", path, dent->d_name) < 0) {
err = -ENOMEM;
goto out;
Thanks,
Taeung
