Messages in this thread Patch in this message | | | From | Tom Zanussi <> | Subject | [PATCH v3 13/33] tracing: Account for variables in named trigger compatibility | Date | Fri, 22 Sep 2017 14:59:53 -0500 |
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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 | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 0d99548..1ee0950 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -1614,7 +1614,7 @@ static int event_hist_trigger_print(struct seq_file *m, sort_key = &hist_data->sort_keys[i]; idx = sort_key->field_idx; - if (WARN_ON(idx >= TRACING_MAP_FIELDS_MAX)) + if (WARN_ON(idx >= HIST_FIELDS_MAX)) return -EINVAL; if (i > 0) @@ -1802,6 +1802,11 @@ 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) + return false; + if (key_field->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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