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drm/i915: Add cxsr toggle tracepoint

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Add a tracepoint for observing changes in the cxsr state. The tracepoint
will dump out the frame and scanline counters for each pipe so that the
information can be compared with eg. plane update tracepoints.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170302171508.1666-18-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2017-03-02 19:15:07 +02:00
parent c137d6605f
commit 1489bba824
2 changed files with 32 additions and 0 deletions
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30
drivers/gpu/drm/i915/i915_trace.h
View File

@ -16,6 +16,36 @@
/* watermark/fifo updates */
TRACE_EVENT(intel_memory_cxsr,
TP_PROTO(struct drm_i915_private *dev_priv, bool old, bool new),
TP_ARGS(dev_priv, old, new),
TP_STRUCT__entry(
__array(u32, frame, 3)
__array(u32, scanline, 3)
__field(bool, old)
__field(bool, new)
),
TP_fast_assign(
enum pipe pipe;
for_each_pipe(dev_priv, pipe) {
__entry->frame[pipe] =
dev_priv->drm.driver->get_vblank_counter(&dev_priv->drm, pipe);
__entry->scanline[pipe] =
intel_get_crtc_scanline(intel_get_crtc_for_pipe(dev_priv, pipe));
}
__entry->old = old;
__entry->new = new;
),
TP_printk("%s->%s, pipe A: frame=%u, scanline=%u, pipe B: frame=%u, scanline=%u, pipe C: frame=%u, scanline=%u",
onoff(__entry->old), onoff(__entry->new),
__entry->frame[PIPE_A], __entry->scanline[PIPE_A],
__entry->frame[PIPE_B], __entry->scanline[PIPE_B],
__entry->frame[PIPE_C], __entry->scanline[PIPE_C])
);
TRACE_EVENT(vlv_wm,
TP_PROTO(struct intel_crtc *crtc, const struct vlv_wm_values *wm),
TP_ARGS(crtc, wm),

2
drivers/gpu/drm/i915/intel_pm.c
View File

@ -377,6 +377,8 @@ static bool _intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enabl
return false;
}
trace_intel_memory_cxsr(dev_priv, was_enabled, enable);
DRM_DEBUG_KMS("memory self-refresh is %s (was %s)\n",
enableddisabled(enable),
enableddisabled(was_enabled));