jevents.py no longer lowercases metrics and altering the case can cause
hashmap lookups to fail, so remove.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/expr.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index c6827900f8d3..aaacf514dc09 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -182,7 +182,7 @@ int expr__add_ref(struct expr_parse_ctx *ctx, struct metric_ref *ref)
 {
 	struct expr_id_data *data_ptr = NULL, *old_data = NULL;
 	char *old_key = NULL;
-	char *name, *p;
+	char *name;
 	int ret;
 
 	data_ptr = zalloc(sizeof(*data_ptr));
@@ -195,15 +195,6 @@ int expr__add_ref(struct expr_parse_ctx *ctx, struct metric_ref *ref)
 		return -ENOMEM;
 	}
 
-	/*
-	 * The jevents tool converts all metric expressions
-	 * to lowercase, including metric references, hence
-	 * we need to add lowercase name for metric, so it's
-	 * properly found.
-	 */
-	for (p = name; *p; p++)
-		*p = tolower(*p);
-
 	/*
 	 * Intentionally passing just const char pointers,
 	 * originally from 'struct pmu_event' object.
-- 
2.38.0.rc1.362.ged0d419d3c-goog