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[RFC][PATCH 12/21] tracing: Account for variables in named trigger compatibility

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Named triggers must also have the same set of variables in order to be
considered compatible - update the trigger match test to account for
that.

The reason for this requirement is that named triggers with variables
are meant to allow one or more events to set the same variable.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
---
 kernel/trace/trace_events_hist.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index e707577..889455e 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1576,6 +1576,10 @@ static bool hist_trigger_match(struct event_trigger_data *data,
 			return false;
 		if (key_field->is_signed != key_field_test->is_signed)
 			return false;
+		if ((key_field->var_name && !key_field_test->var_name) ||
+		    (!key_field->var_name && key_field_test->var_name) ||
+		    strcmp(key_field->var_name, key_field_test->var_name) != 0)
+			return false;
 	}
 
 	for (i = 0; i < hist_data->n_sort_keys; i++) {
-- 
1.9.3

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[RFC][PATCH 12/21] tracing: Account for variables in named trigger compatibility Tom Zanussi <tom.zanussi@linux.intel.com> - 2017-02-08 18:30 +0100
  Re: [RFC][PATCH 12/21] tracing: Account for variables in named  trigger compatibility Namhyung Kim <namhyung@kernel.org> - 2017-02-13 07:10 +0100

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