[PATCH 19/25] perf/uapi: Extend data source fields

[Leo Yan]

Arm CPUs introduce several new types of memory operations, like MTE tag
accessing, system register access for nested virtualization, memcpy &
memset, and Guarded Control Stack (GCS).

For memory operation details, Arm SPE provides information like data
(parallel) processing, floating-point, predicated, atomic, exclusive,
acquire/release, gather/scatter, and conditional.

This commit introduces a field 'mem_op_ext' for extended operation type.
The extended operation type can be combined with the existed operation
type to express a memory type, for examples, a PERF_MEM_OP_GCS type can
be set along with PERF_MEM_OP_LOAD to present a load operation for
GCS register access.

Also use a field 'mem_aff' to store affiliate information.

Signed-off-by: Leo Yan <leo.yan at arm.com>
---
 include/uapi/linux/perf_event.h | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 78a362b8002776e5ce83a0d7816601638c61ecc6..51ab37d44ac31fcdc4bc919c14d5f97e560d9339 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -1309,14 +1309,18 @@ union perf_mem_data_src {
 			mem_snoopx  :  2, /* Snoop mode, ext */
 			mem_blk     :  3, /* Access blocked */
 			mem_hops    :  3, /* Hop level */
-			mem_rsvd    : 18;
+			mem_op_ext  :  6, /* Extended type of opcode */
+			mem_aff     :  8, /* Affiliate info */
+			mem_rsvd    :  4;
 	};
 };
 #elif defined(__BIG_ENDIAN_BITFIELD)
 union perf_mem_data_src {
 	__u64 val;
 	struct {
-		__u64	mem_rsvd    : 18,
+		__u64	mem_rsvd    :  4,
+			mem_aff     :  8, /* Affiliate info */
+			mem_op_ext  :  6, /* Extended type of opcode */
 			mem_hops    :  3, /* Hop level */
 			mem_blk     :  3, /* Access blocked */
 			mem_snoopx  :  2, /* Snoop mode, ext */
@@ -1426,6 +1430,26 @@ union perf_mem_data_src {
 /* 5-7 available */
 #define PERF_MEM_HOPS_SHIFT			43
 
+/* Extended type of memory opcode: */
+#define PERF_MEM_EXT_OP_MTE_TAG			0x0001 /* MTE tag */
+#define PERF_MEM_EXT_OP_NESTED_VIRT		0x0002 /* Nested virtualization */
+#define PERF_MEM_EXT_OP_MEMCPY			0x0004 /* Memory copy */
+#define PERF_MEM_EXT_OP_MEMSET			0x0008 /* Memory set */
+#define PERF_MEM_EXT_OP_SIMD			0x0010 /* SIMD */
+#define PERF_MEM_EXT_OP_GCS			0x0020 /* Guarded Control Stack */
+#define PERF_MEM_EXT_OP_SHIFT			46
+
+/* Affiliate info */
+#define PERF_MEM_AFF_DP				0x0001 /* Data processing */
+#define PERF_MEM_AFF_FP				0x0002 /* Floating-point */
+#define PERF_MEM_AFF_PRED			0x0004 /* Predicated */
+#define PERF_MEM_AFF_ATOMIC			0x0008 /* Atomic */
+#define PERF_MEM_AFF_EXCLUSIVE			0x0010 /* Exclusive */
+#define PERF_MEM_AFF_AR				0x0020 /* Acquire/release */
+#define PERF_MEM_AFF_SG				0x0040 /* Gather/Scatter */
+#define PERF_MEM_AFF_CONDITIONAL		0x0080 /* Conditional */
+#define PERF_MEM_AFF_SHIFT			52
+
 #define PERF_MEM_S(a, s) \
 	(((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)
 

-- 
2.34.1