Commit e9ea2fde authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

perf-report: Add bare minimum PERF_EVENT_READ parsing 



Provide the basic infrastructure to provide per task stats.

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 649c48a9

tools/perf/builtin-report.c

+24 −0
Original line number Diff line number Diff line
@@ -100,6 +100,13 @@ struct lost_event { 
	u64 lost;

};



struct read_event {

	struct perf_event_header header;

	u32 pid,tid;

	u64 value;

	u64 format[3];

};



typedef union event_union {

	struct perf_event_header	header;

	struct ip_event			ip;
@@ -108,6 +115,7 @@ typedef union event_union { 
	struct fork_event		fork;

	struct period_event		period;

	struct lost_event		lost;

	struct read_event		read;

} event_t;



static LIST_HEAD(dsos);
@@ -1349,6 +1357,19 @@ static void trace_event(event_t *event) 
	dprintf(".\n");

}



static int

process_read_event(event_t *event, unsigned long offset, unsigned long head)

{

	dprintf("%p [%p]: PERF_EVENT_READ: %d %d %Lu\n",

			(void *)(offset + head),

			(void *)(long)(event->header.size),

			event->read.pid,

			event->read.tid,

			event->read.value);



	return 0;

}



static int

process_event(event_t *event, unsigned long offset, unsigned long head)

{
@@ -1373,6 +1394,9 @@ process_event(event_t *event, unsigned long offset, unsigned long head) 
	case PERF_EVENT_LOST:

		return process_lost_event(event, offset, head);



	case PERF_EVENT_READ:

		return process_read_event(event, offset, head);



	/*

	 * We dont process them right now but they are fine:

	 */