From 1a361dfcf261d68f081a12133aa8d0d6d6cca34f Mon Sep 17 00:00:00 2001 From: Tom Zanussi Date: Mon, 15 Jan 2018 20:51:50 -0600 Subject: [PATCH] tracing: Account for variables in named trigger compatibility 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. Link: http://lkml.kernel.org/r/a17eae6328a99917f9d5c66129c9fcd355279ee9.1516069914.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi Signed-off-by: Steven Rostedt (VMware) --- 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 8f43f24bf49c..ba326260c034 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -1610,7 +1610,7 @@ 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) @@ -1798,6 +1798,11 @@ 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++) { -- 2.30.2