drm/i915/trace: Describe engines as class:instance pairs

Instead of using the engine->id, use uabi_class:instance pairs in trace-
points including engine info.

This will be more readable, more future proof and more stable for
userspace consumption.

v2:
 * Use u16 for class and instance. (Chris Wilson)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: svetlana.kukanova@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180525082642.18246-1-tvrtko.ursulin@linux.intel.com

diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 5d4f787..7acea40 100644 (file)
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -591,21 +591,26 @@ TRACE_EVENT(i915_gem_ring_sync_to,
 
            TP_STRUCT__entry(
                             __field(u32, dev)
-                            __field(u32, sync_from)
-                            __field(u32, sync_to)
+                            __field(u32, from_class)
+                            __field(u32, from_instance)
+                            __field(u32, to_class)
+                            __field(u32, to_instance)
                             __field(u32, seqno)
                             ),
 
            TP_fast_assign(
                           __entry->dev = from->i915->drm.primary->index;
-                          __entry->sync_from = from->engine->id;
-                          __entry->sync_to = to->engine->id;
+                          __entry->from_class = from->engine->uabi_class;
+                          __entry->from_instance = from->engine->instance;
+                          __entry->to_class = to->engine->uabi_class;
+                          __entry->to_instance = to->engine->instance;
                           __entry->seqno = from->global_seqno;
                           ),
 
-           TP_printk("dev=%u, sync-from=%u, sync-to=%u, seqno=%u",
+           TP_printk("dev=%u, sync-from=%u:%u, sync-to=%u:%u, seqno=%u",
                      __entry->dev,
-                     __entry->sync_from, __entry->sync_to,
+                     __entry->from_class, __entry->from_instance,
+                     __entry->to_class, __entry->to_instance,
                      __entry->seqno)
 );
 
@@ -616,7 +621,8 @@ TRACE_EVENT(i915_request_queue,
            TP_STRUCT__entry(
                             __field(u32, dev)
                             __field(u32, hw_id)
-                            __field(u32, ring)
+                            __field(u16, class)
+                            __field(u16, instance)
                             __field(u32, ctx)
                             __field(u32, seqno)
                             __field(u32, flags)
@@ -625,15 +631,17 @@ TRACE_EVENT(i915_request_queue,
            TP_fast_assign(
                           __entry->dev = rq->i915->drm.primary->index;
                           __entry->hw_id = rq->gem_context->hw_id;
-                          __entry->ring = rq->engine->id;
+                          __entry->class = rq->engine->uabi_class;
+                          __entry->instance = rq->engine->instance;
                           __entry->ctx = rq->fence.context;
                           __entry->seqno = rq->fence.seqno;
                           __entry->flags = flags;
                           ),
 
-           TP_printk("dev=%u, hw_id=%u, ring=%u, ctx=%u, seqno=%u, flags=0x%x",
-                     __entry->dev, __entry->hw_id, __entry->ring, __entry->ctx,
-                     __entry->seqno, __entry->flags)
+           TP_printk("dev=%u, hw_id=%u, engine=%u:%u, ctx=%u, seqno=%u, flags=0x%x",
+                     __entry->dev, __entry->hw_id, __entry->class,
+                     __entry->instance, __entry->ctx, __entry->seqno,
+                     __entry->flags)
 );
 
 DECLARE_EVENT_CLASS(i915_request,
@@ -643,7 +651,8 @@ DECLARE_EVENT_CLASS(i915_request,
            TP_STRUCT__entry(
                             __field(u32, dev)
                             __field(u32, hw_id)
-                            __field(u32, ring)
+                            __field(u16, class)
+                            __field(u16, instance)
                             __field(u32, ctx)
                             __field(u32, seqno)
                             __field(u32, global)
@@ -652,15 +661,17 @@ DECLARE_EVENT_CLASS(i915_request,
            TP_fast_assign(
                           __entry->dev = rq->i915->drm.primary->index;
                           __entry->hw_id = rq->gem_context->hw_id;
-                          __entry->ring = rq->engine->id;
+                          __entry->class = rq->engine->uabi_class;
+                          __entry->instance = rq->engine->instance;
                           __entry->ctx = rq->fence.context;
                           __entry->seqno = rq->fence.seqno;
                           __entry->global = rq->global_seqno;
                           ),
 
-           TP_printk("dev=%u, hw_id=%u, ring=%u, ctx=%u, seqno=%u, global=%u",
-                     __entry->dev, __entry->hw_id, __entry->ring, __entry->ctx,
-                     __entry->seqno, __entry->global)
+           TP_printk("dev=%u, hw_id=%u, engine=%u:%u, ctx=%u, seqno=%u, global=%u",
+                     __entry->dev, __entry->hw_id, __entry->class,
+                     __entry->instance, __entry->ctx, __entry->seqno,
+                     __entry->global)
 );
 
 DEFINE_EVENT(i915_request, i915_request_add,
@@ -686,7 +697,8 @@ TRACE_EVENT(i915_request_in,
            TP_STRUCT__entry(
                             __field(u32, dev)
                             __field(u32, hw_id)
-                            __field(u32, ring)
+                            __field(u16, class)
+                            __field(u16, instance)
                             __field(u32, ctx)
                             __field(u32, seqno)
                             __field(u32, global_seqno)
@@ -697,7 +709,8 @@ TRACE_EVENT(i915_request_in,
            TP_fast_assign(
                           __entry->dev = rq->i915->drm.primary->index;
                           __entry->hw_id = rq->gem_context->hw_id;
-                          __entry->ring = rq->engine->id;
+                          __entry->class = rq->engine->uabi_class;
+                          __entry->instance = rq->engine->instance;
                           __entry->ctx = rq->fence.context;
                           __entry->seqno = rq->fence.seqno;
                           __entry->global_seqno = rq->global_seqno;
@@ -705,10 +718,10 @@ TRACE_EVENT(i915_request_in,
                           __entry->port = port;
                           ),
 
-           TP_printk("dev=%u, hw_id=%u, ring=%u, ctx=%u, seqno=%u, prio=%u, global=%u, port=%u",
-                     __entry->dev, __entry->hw_id, __entry->ring, __entry->ctx,
-                     __entry->seqno, __entry->prio, __entry->global_seqno,
-                     __entry->port)
+           TP_printk("dev=%u, hw_id=%u, engine=%u:%u, ctx=%u, seqno=%u, prio=%u, global=%u, port=%u",
+                     __entry->dev, __entry->hw_id, __entry->class,
+                     __entry->instance, __entry->ctx, __entry->seqno,
+                     __entry->prio, __entry->global_seqno, __entry->port)
 );
 
 TRACE_EVENT(i915_request_out,
@@ -718,7 +731,8 @@ TRACE_EVENT(i915_request_out,
            TP_STRUCT__entry(
                             __field(u32, dev)
                             __field(u32, hw_id)
-                            __field(u32, ring)
+                            __field(u16, class)
+                            __field(u16, instance)
                             __field(u32, ctx)
                             __field(u32, seqno)
                             __field(u32, global_seqno)
@@ -728,16 +742,17 @@ TRACE_EVENT(i915_request_out,
            TP_fast_assign(
                           __entry->dev = rq->i915->drm.primary->index;
                           __entry->hw_id = rq->gem_context->hw_id;
-                          __entry->ring = rq->engine->id;
+                          __entry->class = rq->engine->uabi_class;
+                          __entry->instance = rq->engine->instance;
                           __entry->ctx = rq->fence.context;
                           __entry->seqno = rq->fence.seqno;
                           __entry->global_seqno = rq->global_seqno;
                           __entry->completed = i915_request_completed(rq);
                           ),
 
-                   TP_printk("dev=%u, hw_id=%u, ring=%u, ctx=%u, seqno=%u, global=%u, completed?=%u",
-                             __entry->dev, __entry->hw_id, __entry->ring,
-                             __entry->ctx, __entry->seqno,
+                   TP_printk("dev=%u, hw_id=%u, engine=%u:%u, ctx=%u, seqno=%u, global=%u, completed?=%u",
+                             __entry->dev, __entry->hw_id, __entry->class,
+                             __entry->instance, __entry->ctx, __entry->seqno,
                              __entry->global_seqno, __entry->completed)
 );
 
@@ -771,21 +786,23 @@ TRACE_EVENT(intel_engine_notify,
 
            TP_STRUCT__entry(
                             __field(u32, dev)
-                            __field(u32, ring)
+                            __field(u16, class)
+                            __field(u16, instance)
                             __field(u32, seqno)
                             __field(bool, waiters)
                             ),
 
            TP_fast_assign(
                           __entry->dev = engine->i915->drm.primary->index;
-                          __entry->ring = engine->id;
+                          __entry->class = engine->uabi_class;
+                          __entry->instance = engine->instance;
                           __entry->seqno = intel_engine_get_seqno(engine);
                           __entry->waiters = waiters;
                           ),
 
-           TP_printk("dev=%u, ring=%u, seqno=%u, waiters=%u",
-                     __entry->dev, __entry->ring, __entry->seqno,
-                     __entry->waiters)
+           TP_printk("dev=%u, engine=%u:%u, seqno=%u, waiters=%u",
+                     __entry->dev, __entry->class, __entry->instance,
+                     __entry->seqno, __entry->waiters)
 );
 
 DEFINE_EVENT(i915_request, i915_request_retire,
@@ -800,7 +817,8 @@ TRACE_EVENT(i915_request_wait_begin,
            TP_STRUCT__entry(
                             __field(u32, dev)
                             __field(u32, hw_id)
-                            __field(u32, ring)
+                            __field(u16, class)
+                            __field(u16, instance)
                             __field(u32, ctx)
                             __field(u32, seqno)
                             __field(u32, global)
@@ -816,17 +834,19 @@ TRACE_EVENT(i915_request_wait_begin,
            TP_fast_assign(
                           __entry->dev = rq->i915->drm.primary->index;
                           __entry->hw_id = rq->gem_context->hw_id;
-                          __entry->ring = rq->engine->id;
+                          __entry->class = rq->engine->uabi_class;
+                          __entry->instance = rq->engine->instance;
                           __entry->ctx = rq->fence.context;
                           __entry->seqno = rq->fence.seqno;
                           __entry->global = rq->global_seqno;
                           __entry->flags = flags;
                           ),
 
-           TP_printk("dev=%u, hw_id=%u, ring=%u, ctx=%u, seqno=%u, global=%u, blocking=%u, flags=0x%x",
-                     __entry->dev, __entry->hw_id, __entry->ring, __entry->ctx,
-                     __entry->seqno, __entry->global,
-                     !!(__entry->flags & I915_WAIT_LOCKED), __entry->flags)
+           TP_printk("dev=%u, hw_id=%u, engine=%u:%u, ctx=%u, seqno=%u, global=%u, blocking=%u, flags=0x%x",
+                     __entry->dev, __entry->hw_id, __entry->class,
+                     __entry->instance, __entry->ctx, __entry->seqno,
+                     __entry->global, !!(__entry->flags & I915_WAIT_LOCKED),
+                     __entry->flags)
 );
 
 DEFINE_EVENT(i915_request, i915_request_wait_end,
@@ -966,21 +986,24 @@ TRACE_EVENT(switch_mm,
        TP_ARGS(engine, to),
 
        TP_STRUCT__entry(
-                       __field(u32, ring)
+                       __field(u16, class)
+                       __field(u16, instance)
                        __field(struct i915_gem_context *, to)
                        __field(struct i915_address_space *, vm)
                        __field(u32, dev)
        ),
 
        TP_fast_assign(
-                       __entry->ring = engine->id;
+                       __entry->class = engine->uabi_class;
+                       __entry->instance = engine->instance;
                        __entry->to = to;
                        __entry->vm = to->ppgtt? &to->ppgtt->base : NULL;
                        __entry->dev = engine->i915->drm.primary->index;
        ),
 
-       TP_printk("dev=%u, ring=%u, ctx=%p, ctx_vm=%p",
-                 __entry->dev, __entry->ring, __entry->to, __entry->vm)
+       TP_printk("dev=%u, engine=%u:%u, ctx=%p, ctx_vm=%p",
+                 __entry->dev, __entry->class, __entry->instance, __entry->to,
+                 __entry->vm)
 );
 
 #endif /* _I915_TRACE_H_ */