perf trace: Add subsystem string to struct event

Needed to fully qualify event names for event stream processing.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: rostedt@goodmis.org
Cc: lizf@cn.fujitsu.com
Cc: hch@infradead.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1254809398-8078-3-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 5 insertions, 2 deletions

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index be8412d699a1..de3fc8bf8bfe 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -2950,7 +2950,7 @@ int parse_ftrace_file(char *buf, unsigned long size)
         return 0;
 }
 
-int parse_event_file(char *buf, unsigned long size, char *system__unused __unused)
+int parse_event_file(char *buf, unsigned long size, char *sys)
 {
         struct event *event;
         int ret;
@@ -2977,6 +2977,8 @@ int parse_event_file(char *buf, unsigned long size, char *system__unused __unuse
         if (ret < 0)
                 die("failed to read event print fmt");
 
+        event->system = strdup(sys);
+
 #define PRINT_ARGS 0
         if (PRINT_ARGS && event->print_fmt.args)
                 print_args(event->print_fmt.args);
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 00b440df66d8..cb92978be300 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -133,6 +133,7 @@ struct event {
         int                     flags;
         struct format           format;
         struct print_fmt        print_fmt;
+        char                    *system;
 };
 
 enum {
@@ -167,7 +168,7 @@ void print_funcs(void);
 void print_printk(void);
 
 int parse_ftrace_file(char *buf, unsigned long size);
-int parse_event_file(char *buf, unsigned long size, char *system);
+int parse_event_file(char *buf, unsigned long size, char *sys);
 void print_event(int cpu, void *data, int size, unsigned long long nsecs,
                   char *comm);