[Intel-gfx] [PATCH 07/25] drm/i915: context trace events

[Ben Widawsky]

Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_gem_context.c |    4 +++
 drivers/gpu/drm/i915/i915_trace.h       |   55 +++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index aabe7d9..388cf62 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -130,6 +130,8 @@ static void do_destroy(struct i915_hw_context *ctx)
 	else
 		BUG_ON(ctx != dev_priv->ring[RCS].default_context);
 
+	trace_i915_context_destroy(ctx);
+
 	drm_gem_object_unreference(&ctx->obj->base);
 	kfree(ctx);
 }
@@ -185,6 +187,7 @@ again:
 
 out:
 	(*ctx_out)->obj->context_id = (*ctx_out)->id;
+	trace_i915_context_create(*ctx_out);
 	return 0;
 
 err_out:
@@ -398,6 +401,7 @@ static int do_switch(struct drm_i915_gem_object *from_obj,
 	ring->last_context_obj = to->obj;
 	to->is_initialized = true;
 
+	trace_i915_context_switch(from_obj, to);
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index fe90b3a..6d8412c 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -434,6 +434,61 @@ TRACE_EVENT(i915_reg_rw,
 		(u32)(__entry->val >> 32))
 );
 
+/* Context tracking */
+TRACE_EVENT(i915_context_create,
+	    TP_PROTO(struct i915_hw_context *ctx),
+	    TP_ARGS(ctx),
+
+	    TP_STRUCT__entry(
+			     __field(struct i915_hw_context *, ctx)
+			     __field(u32, id)
+			     __field(struct drm_i915_gem_object *, obj)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->ctx = ctx;
+			   __entry->id = ctx->id;
+			   __entry->obj = ctx->obj;
+			   ),
+
+	    TP_printk("ctx=%p, id=%u, obj=%p",
+		      __entry->ctx, __entry->id, __entry->obj)
+);
+
+TRACE_EVENT(i915_context_destroy,
+	    TP_PROTO(struct i915_hw_context *ctx),
+	    TP_ARGS(ctx),
+
+	    TP_STRUCT__entry(
+			     __field(struct i915_hw_context *, ctx)
+			     __field(u32, id)
+			     ),
+
+	    TP_fast_assign(
+			   __entry->ctx = ctx;
+			   __entry->id = ctx->id;
+			   ),
+
+	    TP_printk("ctx=%p, id=%u", __entry->ctx, __entry->id)
+);
+
+TRACE_EVENT(i915_context_switch,
+	    TP_PROTO(struct drm_i915_gem_object *from, struct i915_hw_context *to),
+	    TP_ARGS(from, to),
+
+	    TP_STRUCT__entry(
+			     __field(int, from)
+			     __field(int, to)
+			    ),
+
+	    TP_fast_assign(
+			   __entry->from = from->context_id;
+			   __entry->to = to->id;
+			   ),
+
+	    TP_printk("context switch from %d to %d",
+		      __entry->from, __entry->to)
+);
 #endif /* _I915_TRACE_H_ */
 
 /* This part must be outside protection */
-- 
1.7.10.2