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Subject[PATCH v2 1/3] tools headers uapi: Sync perf_event.h with kernel sources
Date
Sync perf_event.h with the kernel sources by adding the new "spec" bitfield
to branch entries.

Signed-off-by: Sandipan Das <sandipan.das@amd.com>
---
tools/include/uapi/linux/perf_event.h | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 49cb2355efc0..9e1ae54b48a2 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -263,6 +263,17 @@ enum {
PERF_BR_MAX,
};

+/*
+ * Common branch speculation outcome classification
+ */
+enum {
+ PERF_BR_SPEC_NA = 0, /* Not available */
+ PERF_BR_SPEC_WRONG_PATH = 1, /* Speculative but on wrong path */
+ PERF_BR_NON_SPEC_CORRECT_PATH = 2, /* Non-speculative but on correct path */
+ PERF_BR_SPEC_CORRECT_PATH = 3, /* Speculative and on correct path */
+ PERF_BR_SPEC_MAX,
+};
+
enum {
PERF_BR_NEW_FAULT_ALGN = 0, /* Alignment fault */
PERF_BR_NEW_FAULT_DATA = 1, /* Data fault */
@@ -1395,6 +1406,7 @@ union perf_mem_data_src {
* abort: aborting a hardware transaction
* cycles: cycles from last branch (or 0 if not supported)
* type: branch type
+ * spec: branch speculation info (or 0 if not supported)
*/
struct perf_branch_entry {
__u64 from;
@@ -1405,9 +1417,10 @@ struct perf_branch_entry {
abort:1, /* transaction abort */
cycles:16, /* cycle count to last branch */
type:4, /* branch type */
+ spec:2, /* branch speculation info */
new_type:4, /* additional branch type */
priv:3, /* privilege level */
- reserved:33;
+ reserved:31;
};

union perf_sample_weight {
--
2.34.1
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