From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>
If a search of events is done with trace-cmd list -e, check if any matches
the ftrace events. This is useful to get the fields and print fmt of the
events under the ftrace system.
Note, just "trace-cmd list -e" will still not list ftrace events by
default.
Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
tracecmd/trace-list.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/tracecmd/trace-list.c b/tracecmd/trace-list.c
index 1b32af17..d060c810 100644
--- a/tracecmd/trace-list.c
+++ b/tracecmd/trace-list.c
@@ -158,6 +158,7 @@ static void match_system_events(process_file_func func, const char *system,
static void process_events(process_file_func func, const char *re, int flags)
{
+ const char *ftrace = "ftrace";
regex_t system_reg;
regex_t event_reg;
char *str;
@@ -200,6 +201,19 @@ static void process_events(process_file_func func, const char *re, int flags)
}
free(str);
+ /*
+ * See if this matches the special ftrace system, as ftrace is not included
+ * in the systems list, but can get events from tracefs_system_events().
+ */
+ if (regexec(&system_reg, ftrace, 0, NULL, 0) == 0) {
+ if (!event)
+ show_system(func, ftrace, flags);
+ else
+ match_system_events(func, ftrace, &event_reg, flags);
+ } else if (!just_systems) {
+ match_system_events(func, ftrace, &system_reg, flags);
+ }
+
for (s = 0; systems[s]; s++) {
if (regexec(&system_reg, systems[s], 0, NULL, 0) == 0) {
--
2.29.2
|