---

yaml
---
r: 147297
b: refs/heads/master
c: ea5d20c
h: refs/heads/master
i:
  147295: 3f219f9
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 63e35b25d6b5c3136d22ef249dbbf96716aa08bf
+refs/heads/master: ea5d20cf99db5d26d43b6d322d3ace17e08a6552

trunk/include/linux/perf_counter.h

@@ -127,8 +127,9 @@ struct perf_counter_hw_event {
 				exclude_kernel :  1, /* ditto kernel          */
 				exclude_hv     :  1, /* ditto hypervisor      */
 				exclude_idle   :  1, /* don't count when idle */
+				include_tid    :  1, /* include the tid */
 
-				__reserved_1   : 55;
+				__reserved_1   : 54;
 
 	__u32			extra_config_len;
 	__u32			__reserved_4;
@@ -164,6 +165,8 @@ struct perf_event_header {
 enum perf_event_type {
 	PERF_EVENT_IP		= 0,
 	PERF_EVENT_GROUP	= 1,
+
+	__PERF_EVENT_TID	= 0x100,
 };
 
 #ifdef __KERNEL__

trunk/kernel/perf_counter.c

@@ -1528,16 +1528,30 @@ static int perf_output_write(struct perf_counter *counter, int nmi,
 static void perf_output_simple(struct perf_counter *counter,
 			       int nmi, struct pt_regs *regs)
 {
+	unsigned int size;
 	struct {
 		struct perf_event_header header;
 		u64 ip;
+		u32 pid, tid;
 	} event;
 
 	event.header.type = PERF_EVENT_IP;
-	event.header.size = sizeof(event);
 	event.ip = instruction_pointer(regs);
 
-	perf_output_write(counter, nmi, &event, sizeof(event));
+	size = sizeof(event);
+
+	if (counter->hw_event.include_tid) {
+		/* namespace issues */
+		event.pid = current->group_leader->pid;
+		event.tid = current->pid;
+
+		event.header.type |= __PERF_EVENT_TID;
+	} else
+		size -= sizeof(u64);
+
+	event.header.size = size;
+
+	perf_output_write(counter, nmi, &event, size);
 }
 
 static void perf_output_group(struct perf_counter *counter, int nmi)