Why v3 in the subject?
On Mon, 8 Jun 2015 16:32:00 -0500
Tom Zanussi <tom.zanu...@linux.intel.com> wrote:
> When a trigger is enabled, the cond flag should be set beforehand,
> otherwise a trigger that's expecting to process a trace record
> (e.g. one with post_trigger set) could be invoked without one.
>
> Likewise a trigger's cond flag should be reset after it's disabled,
> not before.
>
> Signed-off-by: Tom Zanussi <tom.zanu...@linux.intel.com>
> Signed-off-by: Daniel Wagner <daniel.wag...@bmw-carit.de>
Why is Daniel signed off by here?
-- Steve
> ---
> kernel/trace/trace_events_trigger.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/kernel/trace/trace_events_trigger.c
> b/kernel/trace/trace_events_trigger.c
> index 42a4009..4d2f3cc 100644
> --- a/kernel/trace/trace_events_trigger.c
> +++ b/kernel/trace/trace_events_trigger.c
> @@ -543,11 +543,12 @@ static int register_trigger(char *glob, struct
> event_trigger_ops *ops,
> list_add_rcu(&data->list, &file->triggers);
> ret++;
>
> + update_cond_flag(file);
> if (trace_event_trigger_enable_disable(file, 1) < 0) {
> list_del_rcu(&data->list);
> + update_cond_flag(file);
> ret--;
> }
> - update_cond_flag(file);
> out:
> return ret;
> }
> @@ -575,8 +576,8 @@ static void unregister_trigger(char *glob, struct
> event_trigger_ops *ops,
> if (data->cmd_ops->trigger_type == test->cmd_ops->trigger_type)
> {
> unregistered = true;
> list_del_rcu(&data->list);
> - update_cond_flag(file);
> trace_event_trigger_enable_disable(file, 0);
> + update_cond_flag(file);
> break;
> }
> }
> @@ -1319,11 +1320,12 @@ static int event_enable_register_trigger(char *glob,
> list_add_rcu(&data->list, &file->triggers);
> ret++;
>
> + update_cond_flag(file);
> if (trace_event_trigger_enable_disable(file, 1) < 0) {
> list_del_rcu(&data->list);
> + update_cond_flag(file);
> ret--;
> }
> - update_cond_flag(file);
> out:
> return ret;
> }
> @@ -1344,8 +1346,8 @@ static void event_enable_unregister_trigger(char *glob,
> (enable_data->file == test_enable_data->file)) {
> unregistered = true;
> list_del_rcu(&data->list);
> - update_cond_flag(file);
> trace_event_trigger_enable_disable(file, 0);
> + update_cond_flag(file);
> break;
> }
> }
--
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