1 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index ef5b62bdb103..f0a1036b1911 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -608,6 +608,13 @@ struct perf_sample_data {
         u64                             txn;
 };
 
+/* default value for data source */
+#define PERF_MEM_NA (PERF_MEM_S(OP, NA)   |\
+                    PERF_MEM_S(LVL, NA)   |\
+                    PERF_MEM_S(SNOOP, NA) |\
+                    PERF_MEM_S(LOCK, NA)  |\
+                    PERF_MEM_S(TLB, NA))
+
 static inline void perf_sample_data_init(struct perf_sample_data *data,
                                          u64 addr, u64 period)
 {
@@ -620,7 +627,7 @@ static inline void perf_sample_data_init(struct perf_sample_data *data,
         data->regs_user.regs = NULL;
         data->stack_user_size = 0;
         data->weight = 0;
-        data->data_src.val = 0;
+        data->data_src.val = PERF_MEM_NA;
         data->txn = 0;
 }