diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2020-01-11 01:06:52 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-01-13 13:19:42 -0500 |
| commit | 3fbe2d6e1fce255d918b622fb2af22e98364a154 (patch) | |
| tree | d09c96f98d9a1a70ec0fe68185a0889d1147ae40 /kernel/trace/trace_events_hist.c | |
| parent | 4d655281eb1bb59fad021c0f68afd033f8d0320d (diff) | |
tracing/boot: Add synthetic event support
Add synthetic event node support to boot time tracing.
The synthetic event is a kind of event node, but the group
name is "synthetic".
- ftrace.event.synthetic.EVENT.fields = FIELD[, FIELD2...]
Defines new synthetic event with FIELDs. Each field should be
"type varname".
The synthetic node requires "fields" string arraies, which defines
the fields as same as tracing/synth_events interface.
Link: http://lkml.kernel.org/r/157867241236.17873.12411615143321557709.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events_hist.c')
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 1cb4c4c8e5b7..8e90f1ada437 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -1384,6 +1384,11 @@ static int create_or_delete_synth_event(int argc, char **argv) return ret == -ECANCELED ? -EINVAL : ret; } +int synth_event_run_command(const char *command) +{ + return trace_run_command(command, create_or_delete_synth_event); +} + static int synth_event_create(int argc, const char **argv) { const char *name = argv[0]; |