From: Tom Zanussi <tom.zanussi@linux.intel.com>
Date: Wed, 28 Mar 2018 15:10:54 -0500
Subject: tracing: Don't add flag strings when displaying variable references
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git
Git-commit: 3065d380d09819e78ebdf844849c209737e5f8d2
Patch-mainline: Queued in subsystem maintainer repository
References: SLE Realtime Extension
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>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Mike Galbraith <mgalbraith@suse.de>
---
kernel/trace/trace_events_hist.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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_f
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) {