[Intel-gfx] [PATCH 1/3] drm/i915: Add ppgtt init/release trace points

[oscar.mateo at intel.com]

From: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>

These tracepoints are useful for observing the creation and
destruction of Full PPGTTs.

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 drivers/gpu/drm/i915/i915_gem_context.c |  5 +++++
 drivers/gpu/drm/i915/i915_trace.h       | 38 +++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 5a62a19..bdfe3f5 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -136,6 +136,8 @@ static void ppgtt_release(struct kref *kref)
 	struct i915_hw_ppgtt *ppgtt =
 		container_of(kref, struct i915_hw_ppgtt, ref);
 
+	trace_ppgtt_release(ppgtt);
+
 	do_ppgtt_cleanup(ppgtt);
 	kfree(ppgtt);
 }
@@ -215,6 +217,9 @@ create_vm_for_ctx(struct drm_device *dev, struct intel_context *ctx)
 	}
 
 	ppgtt->ctx = ctx;
+
+	trace_ppgtt_init(ppgtt);
+
 	return ppgtt;
 }
 
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index f5aa006..2d206d8 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -587,6 +587,44 @@ TRACE_EVENT(intel_gpu_freq_change,
 	    TP_printk("new_freq=%u", __entry->freq)
 );
 
+TRACE_EVENT(ppgtt_init,
+
+	TP_PROTO(struct i915_hw_ppgtt *ppgtt),
+
+	TP_ARGS(ppgtt),
+
+	TP_STRUCT__entry(
+		__field(struct i915_hw_ppgtt*, trace_ppgtt)
+		__field(unsigned int, ppgtt_op_code)
+	),
+
+	TP_fast_assign(
+		__entry->trace_ppgtt = ppgtt;
+		__entry->ppgtt_op_code = 0;
+	),
+
+	TP_printk("ppgtt op: %u", __entry->ppgtt_op_code)
+);
+
+TRACE_EVENT(ppgtt_release,
+
+	TP_PROTO(struct i915_hw_ppgtt *ppgtt),
+
+	TP_ARGS(ppgtt),
+
+	TP_STRUCT__entry(
+		__field(struct i915_hw_ppgtt*, trace_ppgtt)
+		__field(unsigned int, ppgtt_op_code)
+	),
+
+	TP_fast_assign(
+		__entry->trace_ppgtt = ppgtt;
+		__entry->ppgtt_op_code = 1;
+	),
+
+	TP_printk("ppgtt op: %u", __entry->ppgtt_op_code)
+);
+
 #endif /* _I915_TRACE_H_ */
 
 /* This part must be outside protection */
-- 
1.9.0