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tracing/dynevent: Delete all matched events

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When user gives an event name to delete, delete all
matched events instead of the first one.

This means if there are several events which have same
name but different group (subsystem) name, those are
removed if user passed only the event name, e.g.

  # cat kprobe_events
  p:group1/testevent _do_fork
  p:group2/testevent fork_idle
  # echo -:testevent >> kprobe_events
  # cat kprobe_events
  #

Link: http://lkml.kernel.org/r/156095684958.28024.16597826267117453638.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2019-06-20 00:07:29 +09:00 committed by Steven Rostedt (VMware)
parent 60d53e2c3b
commit cb8e7a8d55
1 changed files with 5 additions and 3 deletions
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8
kernel/trace/trace_dynevent.c
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@ -61,10 +61,12 @@ int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type)
for_each_dyn_event_safe(pos, n) {
if (type && type != pos->ops)
continue;
if (pos->ops->match(system, event, pos)) {
ret = pos->ops->free(pos);
if (!pos->ops->match(system, event, pos))
continue;
ret = pos->ops->free(pos);
if (ret)
break;
}
}
mutex_unlock(&event_mutex);