[PATCH] perf/core: Remove unused function perf_cgroup_event_cgrp_time()

[Matthias Kaehlcke]

The function was added by commit e5d1367f17ba ("perf: Add cgroup
support") in 2011 and hasn't been used since then. Removing it fixes the
following warning when building with clang:

    kernel/events/core.c:696:19: error: unused function
        'perf_cgroup_event_cgrp_time' [-Werror,-Wunused-function]

Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
---
 kernel/events/core.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 6e75a5c9412d..9058fc7ca1fb 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -925,11 +925,6 @@ static inline int is_cgroup_event(struct perf_event *event)
 	return 0;
 }
 
-static inline u64 perf_cgroup_event_cgrp_time(struct perf_event *event)
-{
-	return 0;
-}
-
 static inline void update_cgrp_time_from_event(struct perf_event *event)
 {
 }
-- 
2.13.0.219.gdb65acc882-goog