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Subject[PATCH 2/4] tracing: Don't add flag strings when displaying variable references
Date
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:...

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
---
kernel/trace/trace_events_hist.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index fb81447..468e43f 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -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) {
--
1.9.3
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