Messages in this thread Patch in this message | | | Date | Tue, 20 Mar 2018 22:21:08 -0400 | From | Steven Rostedt <> | Subject | [for-next][PATCH 16/46] tracing: Account for variables in named trigger compatibility |
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From: Tom Zanussi <tom.zanussi@linux.intel.com>
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 <tom.zanussi@linux.intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- 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++) { -- 2.15.1
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