From: Stephane Eranian <eran...@google.com>
- the default of 0 for the data source in perf_sample_data_init() was
wrong. 0 is not a valid value. So defined PERF_MEM_NA (not available)
Signed-off-by: Stephane Eranian <eran...@google.com>
Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
include/linux/perf_event.h | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 707617a..8b206aa 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -604,6 +604,13 @@ 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)
{
@@ -616,7 +623,7 @@ 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;
}
--
1.9.3
--
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