Support parsing of builtin tid expression.

Testcase:
  # perf record -e sched:sched_switch --action 'print("tid = %d\n", tid)' true
  tid = 134891
  tid = 0
  tid = 134891
  tid = 0
  tid = 0
  tid = 134891
  tid = 132778
  tid = 134891
  tid = 132778
  tid = 134891
  tid = 132778
  tid = 134891
  tid = 132778
  tid = 134891
  tid = 132778
  ...
Signed-off-by: Yang Jihong <yangjihong@bytedance.com>
---
 tools/perf/util/bpf_skel/bpf_record_action.h |  1 +
 tools/perf/util/bpf_skel/record_action.bpf.c | 14 ++++++++++++++
 tools/perf/util/parse-action.c               |  1 +
 tools/perf/util/parse-action.h               |  1 +
 tools/perf/util/parse-action.l               |  1 +
 tools/perf/util/record_action.c              |  4 ++++
 6 files changed, 22 insertions(+)

diff --git a/tools/perf/util/bpf_skel/bpf_record_action.h b/tools/perf/util/bpf_skel/bpf_record_action.h
index a4817d62bce8..1d2ffa3c260f 100644
--- a/tools/perf/util/bpf_skel/bpf_record_action.h
+++ b/tools/perf/util/bpf_skel/bpf_record_action.h
@@ -9,6 +9,7 @@
 enum __output_format_type {
 	__OUTPUT_FORMAT_TYPE_CPU,
 	__OUTPUT_FORMAT_TYPE_PID,
+	__OUTPUT_FORMAT_TYPE_TID,
 	__OUTPUT_FORMAT_TYPE_MAX,
 };
 
diff --git a/tools/perf/util/bpf_skel/record_action.bpf.c b/tools/perf/util/bpf_skel/record_action.bpf.c
index fd44bb3da663..b6049b9af055 100644
--- a/tools/perf/util/bpf_skel/record_action.bpf.c
+++ b/tools/perf/util/bpf_skel/record_action.bpf.c
@@ -57,6 +57,17 @@ static inline int output_pid(__u8 *data, int size)
 	return sizeof(__u32);
 }
 
+static inline int output_tid(__u8 *data, int size)
+{
+	__u32 *pid = (__u32 *)data;
+
+	if (size < sizeof(__u32))
+		return -1;
+
+	*pid = bpf_get_current_pid_tgid() & 0xffffffff;
+	return sizeof(__u32);
+}
+
 SEC("xxx")
 int sample_output(u64 *ctx)
 {
@@ -82,6 +93,9 @@ int sample_output(u64 *ctx)
 		case __OUTPUT_FORMAT_TYPE_PID:
 			ret = output_pid(data + total, __OUTPUT_DATA_MAX_SIZE - total);
 			break;
+		case __OUTPUT_FORMAT_TYPE_TID:
+			ret = output_tid(data + total, __OUTPUT_DATA_MAX_SIZE - total);
+			break;
 		default:
 			ret = -1;
 			break;
diff --git a/tools/perf/util/parse-action.c b/tools/perf/util/parse-action.c
index 0ae998a5d286..6928990c9106 100644
--- a/tools/perf/util/parse-action.c
+++ b/tools/perf/util/parse-action.c
@@ -14,6 +14,7 @@
  *   - builtin:
  *     - cpu
  *     - pid
+ *     - tid
  */
 
 #include <regex.h>
diff --git a/tools/perf/util/parse-action.h b/tools/perf/util/parse-action.h
index e74d3b4e5de8..817e2c4213e0 100644
--- a/tools/perf/util/parse-action.h
+++ b/tools/perf/util/parse-action.h
@@ -29,6 +29,7 @@ enum evtact_expr_call_type {
 enum evtact_expr_builtin_type {
 	EVTACT_EXPR_BUILTIN_TYPE_CPU,
 	EVTACT_EXPR_BUILTIN_TYPE_PID,
+	EVTACT_EXPR_BUILTIN_TYPE_TID,
 	EVTACT_EXPR_BUILTIN_TYPE_MAX,
 };
 
diff --git a/tools/perf/util/parse-action.l b/tools/perf/util/parse-action.l
index 5a5bbe3e1f94..2ada6b4bf091 100644
--- a/tools/perf/util/parse-action.l
+++ b/tools/perf/util/parse-action.l
@@ -105,6 +105,7 @@ ident		[_a-zA-Z][_a-zA-Z0-9]*
 
 cpu		{ return builtin(EVTACT_EXPR_BUILTIN_TYPE_CPU);  }
 pid		{ return builtin(EVTACT_EXPR_BUILTIN_TYPE_PID);  }
+tid		{ return builtin(EVTACT_EXPR_BUILTIN_TYPE_TID);  }
 
 print		{ return call(EVTACT_EXPR_CALL_TYPE_PRINT); }
 
diff --git a/tools/perf/util/record_action.c b/tools/perf/util/record_action.c
index 1d7b603713d1..f4db98b7df4d 100644
--- a/tools/perf/util/record_action.c
+++ b/tools/perf/util/record_action.c
@@ -100,6 +100,10 @@ static int set_expr_builtin_output_format(struct evtact_expr *expr,
 		*format = __OUTPUT_FORMAT_TYPE_PID;
 		size = sizeof(u32);
 		break;
+	case EVTACT_EXPR_BUILTIN_TYPE_TID:
+		*format = __OUTPUT_FORMAT_TYPE_TID;
+		size = sizeof(u32);
+		break;
 	default:
 		pr_err("set expr builtin output format unknown opcode: %u\n", opcode);
 		return -1;
-- 
2.25.1