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-rw-r--r--include/linux/perf_counter.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 2b5e66d5ebdf..48212c15b7d6 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -246,6 +246,7 @@ struct file;
struct perf_mmap_data {
struct rcu_head rcu_head;
int nr_pages;
+ atomic_t wakeup;
atomic_t head;
struct perf_counter_mmap_page *user_page;
void *data_pages[0];