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tracing: Don't add flag strings when displaying variable references 

Variable references should never have flags appended when displayed -
prevent that from happening.

Before:

  # cat /sys/kernel/debug/tracing/events/sched/sched_switch/trigger
  hist:keys=next_pid:vals=hitcount:wakeup_lat=common_timestamp.usecs-$ts0.usecs:...

After:

  hist:keys=next_pid:vals=hitcount:wakeup_lat=common_timestamp.usecs-$ts0:...

Link: http://lkml.kernel.org/r/913318a5610ef6b24af2522575f671fa6ee19b6b.1522256721.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>
This commit is contained in:
Tom Zanussi 2018-03-28 15:10:54 -05:00 committed by Steven Rostedt (VMware)
parent 0ae7961e75
commit 76690945f5
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace_events_hist.c
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@ -2052,7 +2052,7 @@ static void expr_field_str(struct hist_field *field, char *expr)
strcat(expr, hist_field_name(field, 0));
if (field->flags) {
if (field->flags && !(field->flags & HIST_FIELD_FL_VAR_REF)) {
const char *flags_str = get_hist_field_flags(field);
if (flags_str) {