[Intel-gfx] [PATCH] drm/i915/execlists: Include priority info in trace_ports

[Chris Wilson]

Add some extra information into trace_ports to help with reviewing
correctness.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 30 +++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 9104796673dc..9332269d2a79 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1415,6 +1415,24 @@ static inline void write_desc(struct intel_engine_execlists *execlists, u64 desc
 	}
 }
 
+static char *dump_port(char *buf, int buflen,
+		       const char *prefix,
+		       struct i915_request *rq)
+{
+	if (!rq)
+		return "";
+
+	snprintf(buf, buflen, "%s%llx:%lld%s prio %d",
+		 prefix,
+		 rq->fence.context, rq->fence.seqno,
+		 i915_request_completed(rq) ? "!" :
+		 i915_request_started(rq) ? "*" :
+		 "",
+		 rq_prio(rq));
+
+	return buf;
+}
+
 static __maybe_unused void
 trace_ports(const struct intel_engine_execlists *execlists,
 	    const char *msg,
@@ -1422,18 +1440,14 @@ trace_ports(const struct intel_engine_execlists *execlists,
 {
 	const struct intel_engine_cs *engine =
 		container_of(execlists, typeof(*engine), execlists);
+	char p0[40], p1[40];
 
 	if (!ports[0])
 		return;
 
-	ENGINE_TRACE(engine, "%s { %llx:%lld%s, %llx:%lld }\n", msg,
-		     ports[0]->fence.context,
-		     ports[0]->fence.seqno,
-		     i915_request_completed(ports[0]) ? "!" :
-		     i915_request_started(ports[0]) ? "*" :
-		     "",
-		     ports[1] ? ports[1]->fence.context : 0,
-		     ports[1] ? ports[1]->fence.seqno : 0);
+	ENGINE_TRACE(engine, "%s { %s%s }\n", msg,
+		     dump_port(p0, sizeof(p0), "", ports[0]),
+		     dump_port(p1, sizeof(p1), ", ", ports[1]));
 }
 
 static inline bool
-- 
2.20.1