perf: Export struct perf_branch_entry to userspace

[karo-tx-linux.git] / include / uapi / linux / perf_event.h

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index a77f43af72b8e4ea2919691de71dce8c940a8038..408b8c730731675e857a3cbde154142655a15c3b 100644 (file)
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -757,4 +757,28 @@ union perf_mem_data_src {
 #define PERF_MEM_S(a, s) \
        (((u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)
 
+/*
+ * single taken branch record layout:
+ *
+ *      from: source instruction (may not always be a branch insn)
+ *        to: branch target
+ *   mispred: branch target was mispredicted
+ * predicted: branch target was predicted
+ *
+ * support for mispred, predicted is optional. In case it
+ * is not supported mispred = predicted = 0.
+ *
+ *     in_tx: running in a hardware transaction
+ *     abort: aborting a hardware transaction
+ */
+struct perf_branch_entry {
+       __u64   from;
+       __u64   to;
+       __u64   mispred:1,  /* target mispredicted */
+               predicted:1,/* target predicted */
+               in_tx:1,    /* in transaction */
+               abort:1,    /* transaction abort */
+               reserved:60;
+};
+
 #endif /* _UAPI_LINUX_PERF_EVENT_H */