From 3fbe2d6e1fce255d918b622fb2af22e98364a154 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Sat, 11 Jan 2020 01:06:52 +0900 Subject: 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 Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_events_hist.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'kernel/trace/trace_events_hist.c') 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]; -- cgit v1.2.3