1 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 5fc494f4a094..fbbf5e598368 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -746,6 +746,11 @@ struct pmu {
          * if no implementation is provided it will default to: event->hw.idx + 1.
          */
         int (*event_idx)                (struct perf_event *event); /*optional */
+
+        /*
+         * flush branch stack on context-switches (needed in cpu-wide mode)
+         */
+        void (*flush_branch_stack)      (void);
 };
 
 /**
@@ -979,7 +984,8 @@ struct perf_event_context {
         u64                             parent_gen;
         u64                             generation;
         int                             pin_count;
-        int                             nr_cgroups; /* cgroup events present */
+        int                             nr_cgroups;      /* cgroup evts */
+        int                             nr_branch_stack; /* branch_stack evt */
         struct rcu_head                 rcu_head;
 };
 
@@ -1044,6 +1050,7 @@ perf_event_create_kernel_counter(struct perf_event_attr *attr,
 extern u64 perf_event_read_value(struct perf_event *event,
                                  u64 *enabled, u64 *running);
 
+
 struct perf_sample_data {
         u64                             type;