From 938cfed18bec2c7361f37efc954712a7cc42c353 Mon Sep 17 00:00:00 2001
From: Jean Pihet <j-pihet@ti.com>
Date: Wed, 5 Jan 2011 19:49:01 +0100
Subject: [PATCH] perf: Add calls to suspend trace point

Uses the machine_suspend trace point, called from the
generic kernel suspend_devices_and_enter function.

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Arjan van de Ven <arjan@linux.intel.com>
CC: Thomas Renninger <trenn@suse.de>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-pm@lists.linux-foundation.org
LKML-Reference: <1294253342-29056-2-git-send-email-j-pihet@ti.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 kernel/power/suspend.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index ecf770509d0d..031d5e3a6197 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -22,6 +22,7 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/suspend.h>
+#include <trace/events/power.h>
 
 #include "power.h"
 
@@ -201,6 +202,7 @@ int suspend_devices_and_enter(suspend_state_t state)
 	if (!suspend_ops)
 		return -ENOSYS;
 
+	trace_machine_suspend(state);
 	if (suspend_ops->begin) {
 		error = suspend_ops->begin(state);
 		if (error)
@@ -229,6 +231,7 @@ int suspend_devices_and_enter(suspend_state_t state)
  Close:
 	if (suspend_ops->end)
 		suspend_ops->end();
+	trace_machine_suspend(PWR_EVENT_EXIT);
 	return error;
 
  Recover_platform:
-- 
2.20.1