[PATCH 9/9] libtraceeval: Only do stats on values marked with the STAT flag

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From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>

Add TRACEEVAL_FL_STAT to perform stats on the value, otherwise ignore it.

Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
 include/traceeval-hist.h | 1 +
 samples/task-eval.c      | 1 +
 src/histograms.c         | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/traceeval-hist.h b/include/traceeval-hist.h
index 81fe805e691d..34f01a51a334 100644
--- a/include/traceeval-hist.h
+++ b/include/traceeval-hist.h
@@ -36,6 +36,7 @@ enum traceeval_flags {
 	TRACEEVAL_FL_VALUE		= (1 << 1),
 	TRACEEVAL_FL_SIGNED		= (1 << 2),
 	TRACEEVAL_FL_TIMESTAMP		= (1 << 3),
+	TRACEEVAL_FL_STAT		= (1 << 3),
 };
 
 /*
diff --git a/samples/task-eval.c b/samples/task-eval.c
index ed3a1a95f097..0e3acb7644ef 100644
--- a/samples/task-eval.c
+++ b/samples/task-eval.c
@@ -147,6 +147,7 @@ static struct traceeval_type delta_vals[] = {
 	{
 		.type	= TRACEEVAL_TYPE_NUMBER_64,
 		.name	= "delta",
+		.flags = TRACEEVAL_FL_STAT,
 	},
 	{
 		.type	= TRACEEVAL_TYPE_NONE,
diff --git a/src/histograms.c b/src/histograms.c
index 973bf3ad279c..8f1cf4187713 100644
--- a/src/histograms.c
+++ b/src/histograms.c
@@ -571,7 +571,7 @@ static int copy_traceeval_data(struct traceeval_type *type,
 		return 0;
 	}
 
-	if (!stat)
+	if (!stat || !(type->flags & TRACEEVAL_FL_STAT))
 		return 0;
 
 	if (!stat->count++) {
-- 
2.40.1




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