Add an entry with a basic description of events/synthetic_events along
with a simple example.
Signed-off-by: Tom Zanussi <zanu...@kernel.org>
---
kernel/trace/trace.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 3f2533adae72..73fd0e0c0f39 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5249,7 +5249,12 @@ static const char readme_msg[] =
"\t trace(<synthetic_event>,param list) - generate synthetic
event\n"
"\t save(field,...) - save current event
fields\n"
#ifdef CONFIG_TRACER_SNAPSHOT
- "\t snapshot() - snapshot the trace
buffer\n"
+ "\t snapshot() - snapshot the trace
buffer\n\n"
+#endif
+#ifdef CONFIG_SYNTH_EVENTS
+ " events/synthetic_events\t- Create/append/remove/show synthetic
events\n"
+ "\t Write into this file to define/undefine new synthetic events.\n"
+ "\t example: echo 'myevent u64 lat; char name[]' >>
synthetic_events\n"
#endif
#endif
;
--
2.17.1
