From: Dave Airlie <airlied@xxxxxxxxxx>
This just adds a tracepoint that can be caught in perf for when the clocks
change.
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon_pm.c | 3 +++
drivers/gpu/drm/radeon/radeon_trace.h | 18 ++++++++++++++++++
2 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 6fabe89..2a44332 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -30,6 +30,7 @@
#include <linux/power_supply.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
+#include "radeon_trace.h"
#define RADEON_IDLE_LOOP_MS 100
#define RADEON_RECLOCK_DELAY_MS 200
@@ -165,6 +166,8 @@ static void radeon_set_power_state(struct radeon_device *rdev)
(rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
return;
+ trace_radeon_set_power_state(rdev);
+
if (radeon_gui_idle(rdev)) {
sclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
clock_info[rdev->pm.requested_clock_mode_index].sclk;
diff --git a/drivers/gpu/drm/radeon/radeon_trace.h b/drivers/gpu/drm/radeon/radeon_trace.h
index eafd816..ef0fd05 100644
--- a/drivers/gpu/drm/radeon/radeon_trace.h
+++ b/drivers/gpu/drm/radeon/radeon_trace.h
@@ -27,6 +27,24 @@ TRACE_EVENT(radeon_bo_create,
TP_printk("bo=%p, pages=%u", __entry->bo, __entry->pages)
);
+TRACE_EVENT(radeon_set_power_state,
+ TP_PROTO(struct radeon_device *rdev),
+ TP_ARGS(rdev),
+ TP_STRUCT__entry(
+ __field(int, requested_clock_mode)
+ __field(int, current_clock_mode)
+ __field(int, requested_power_state)
+ __field(int, current_power_state)
+ ),
+ TP_fast_assign(
+ __entry->requested_clock_mode = rdev->pm.requested_clock_mode_index;
+ __entry->current_clock_mode = rdev->pm.current_clock_mode_index;
+ __entry->requested_power_state = rdev->pm.requested_power_state_index;
+ __entry->current_power_state = rdev->pm.current_power_state_index;
+ ),
+ TP_printk("clock %d->%d, power %d->%d", __entry->current_clock_mode, __entry->requested_clock_mode, __entry->current_power_state, __entry->requested_power_state)
+);
+
DECLARE_EVENT_CLASS(radeon_fence_request,
TP_PROTO(struct drm_device *dev, u32 seqno),
--
1.7.6
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