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Commit 1489bba8 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Add cxsr toggle tracepoint 



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: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170302171508.1666-18-ville.syrjala@linux.intel.com
parent c137d660

drivers/gpu/drm/i915/i915_trace.h

+30 −0
Original line number Diff line number Diff line
@@ -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),

drivers/gpu/drm/i915/intel_pm.c

+2 −0
Original line number Diff line number Diff line
@@ -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));