On 02/18/2016 06:27 AM, john.c.harri...@intel.com wrote:
> From: John Harrison <john.c.harri...@intel.com>
>
> Added trace points to the scheduler to track all the various events,
> node state transitions and other interesting things that occur.
>
> v2: Updated for new request completion tracking implementation.
>
> v3: Updated for changes to node kill code.
>
> v4: Wrapped some long lines to keep the style checker happy.
>
> For: VIZ-1587
> Signed-off-by: John Harrison <john.c.harri...@intel.com>
> ---
> drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 +
> drivers/gpu/drm/i915/i915_scheduler.c | 26 ++++
> drivers/gpu/drm/i915/i915_trace.h | 196
> +++++++++++++++++++++++++++++
> drivers/gpu/drm/i915/intel_lrc.c | 2 +
> 4 files changed, 226 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> index b9ad0fd..d4de8c7 100644
> --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> @@ -1272,6 +1272,8 @@ i915_gem_ringbuffer_submission(struct
> i915_execbuffer_params *params,
>
> i915_gem_execbuffer_move_to_active(vmas, params->request);
>
> + trace_i915_gem_ring_queue(ring, params);
> +
> qe = container_of(params, typeof(*qe), params);
> ret = i915_scheduler_queue_execbuffer(qe);
> if (ret)
> diff --git a/drivers/gpu/drm/i915/i915_scheduler.c
> b/drivers/gpu/drm/i915/i915_scheduler.c
> index 47d7de4..e56ce08 100644
> --- a/drivers/gpu/drm/i915/i915_scheduler.c
> +++ b/drivers/gpu/drm/i915/i915_scheduler.c
> @@ -88,6 +88,8 @@ static void i915_scheduler_node_requeue(struct
> i915_scheduler_queue_entry *node)
> /* Seqno will be reassigned on relaunch */
> node->params.request->seqno = 0;
> node->status = i915_sqs_queued;
> + trace_i915_scheduler_unfly(node->params.ring, node);
> + trace_i915_scheduler_node_state_change(node->params.ring, node);
> }
>
> /*
> @@ -99,7 +101,11 @@ static void i915_scheduler_node_kill(struct
> i915_scheduler_queue_entry *node)
> WARN_ON(!node);
> WARN_ON(I915_SQS_IS_COMPLETE(node));
>
> + if (I915_SQS_IS_FLYING(node))
> + trace_i915_scheduler_unfly(node->params.ring, node);
> +
> node->status = i915_sqs_dead;
> + trace_i915_scheduler_node_state_change(node->params.ring, node);
> }
>
> /* Mark a node as in flight on the hardware. */
> @@ -124,6 +130,9 @@ static int i915_scheduler_node_fly(struct
> i915_scheduler_queue_entry *node)
>
> node->status = i915_sqs_flying;
>
> + trace_i915_scheduler_fly(ring, node);
> + trace_i915_scheduler_node_state_change(ring, node);
> +
> if (!(scheduler->flags[ring->id] & i915_sf_interrupts_enabled)) {
> bool success = true;
>
> @@ -280,6 +289,8 @@ static int i915_scheduler_pop_from_queue_locked(struct
> intel_engine_cs *ring,
> INIT_LIST_HEAD(&best->link);
> best->status = i915_sqs_popped;
>
> + trace_i915_scheduler_node_state_change(ring, best);
> +
> ret = 0;
> } else {
> /* Can only get here if:
> @@ -297,6 +308,8 @@ static int i915_scheduler_pop_from_queue_locked(struct
> intel_engine_cs *ring,
> }
> }
>
> + trace_i915_scheduler_pop_from_queue(ring, best);
> +
> *pop_node = best;
> return ret;
> }
> @@ -506,6 +519,8 @@ static int i915_scheduler_queue_execbuffer_bypass(struct
> i915_scheduler_queue_en
> struct i915_scheduler *scheduler = dev_priv->scheduler;
> int ret;
>
> + trace_i915_scheduler_queue(qe->params.ring, qe);
> +
> intel_ring_reserved_space_cancel(qe->params.request->ringbuf);
>
> scheduler->flags[qe->params.ring->id] |= i915_sf_submitting;
> @@ -628,6 +643,9 @@ int i915_scheduler_queue_execbuffer(struct
> i915_scheduler_queue_entry *qe)
> not_flying = i915_scheduler_count_flying(scheduler, ring) <
> scheduler->min_flying;
>
> + trace_i915_scheduler_queue(ring, node);
> + trace_i915_scheduler_node_state_change(ring, node);
> +
> spin_unlock_irq(&scheduler->lock);
>
> if (not_flying)
> @@ -657,6 +675,8 @@ bool i915_scheduler_notify_request(struct
> drm_i915_gem_request *req)
> struct i915_scheduler_queue_entry *node = req->scheduler_qe;
> unsigned long flags;
>
> + trace_i915_scheduler_landing(req);
> +
> if (!node)
> return false;
>
> @@ -670,6 +690,8 @@ bool i915_scheduler_notify_request(struct
> drm_i915_gem_request *req)
> else
> node->status = i915_sqs_complete;
>
> + trace_i915_scheduler_node_state_change(req->ring, node);
> +
> spin_unlock_irqrestore(&scheduler->lock, flags);
>
> return true;
> @@ -877,6 +899,8 @@ static bool i915_scheduler_remove(struct i915_scheduler
> *scheduler,
> /* Launch more packets now? */
> do_submit = (queued > 0) && (flying < scheduler->min_flying);
>
> + trace_i915_scheduler_remove(ring, min_seqno, do_submit);
> +
> spin_unlock_irq(&scheduler->lock);
>
> return do_submit;
> @@ -912,6 +936,8 @@ static void i915_scheduler_process_work(struct
> intel_engine_cs *ring)
> node = list_first_entry(&remove, typeof(*node), link);
> list_del(&node->link);
>
> + trace_i915_scheduler_destroy(ring, node);
> +
> /* Free up all the DRM references */
> i915_scheduler_clean_node(node);
>
> diff --git a/drivers/gpu/drm/i915/i915_trace.h
> b/drivers/gpu/drm/i915/i915_trace.h
> index 455c215..c3c4e58 100644
> --- a/drivers/gpu/drm/i915/i915_trace.h
> +++ b/drivers/gpu/drm/i915/i915_trace.h
> @@ -9,6 +9,7 @@
> #include "i915_drv.h"
> #include "intel_drv.h"
> #include "intel_ringbuffer.h"
> +#include "i915_scheduler.h"
>
> #undef TRACE_SYSTEM
> #define TRACE_SYSTEM i915
> @@ -826,6 +827,201 @@ TRACE_EVENT(switch_mm,
> __entry->dev, __entry->ring, __entry->to, __entry->vm)
> );
>
> +TRACE_EVENT(i915_scheduler_queue,
> + TP_PROTO(struct intel_engine_cs *ring,
> + struct i915_scheduler_queue_entry *node),
> + TP_ARGS(ring, node),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->uniq = node ? node->params.request->uniq
> : 0;
> + __entry->seqno = node ? node->params.request->seqno
> : 0;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d",
> + __entry->ring, __entry->uniq, __entry->seqno)
> +);
> +
> +TRACE_EVENT(i915_scheduler_fly,
> + TP_PROTO(struct intel_engine_cs *ring,
> + struct i915_scheduler_queue_entry *node),
> + TP_ARGS(ring, node),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->uniq = node ? node->params.request->uniq
> : 0;
> + __entry->seqno = node ? node->params.request->seqno
> : 0;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d",
> + __entry->ring, __entry->uniq, __entry->seqno)
> +);
> +
> +TRACE_EVENT(i915_scheduler_unfly,
> + TP_PROTO(struct intel_engine_cs *ring,
> + struct i915_scheduler_queue_entry *node),
> + TP_ARGS(ring, node),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->uniq = node ? node->params.request->uniq
> : 0;
> + __entry->seqno = node ? node->params.request->seqno
> : 0;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d",
> + __entry->ring, __entry->uniq, __entry->seqno)
> +);
> +
> +TRACE_EVENT(i915_scheduler_landing,
> + TP_PROTO(struct drm_i915_gem_request *req),
> + TP_ARGS(req),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + __field(u32, status)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = req->ring->id;
> + __entry->uniq = req->uniq;
> + __entry->seqno = req->seqno;
> + __entry->status = req->scheduler_qe ?
> + req->scheduler_qe->status : ~0U;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d, status=%d",
> + __entry->ring, __entry->uniq, __entry->seqno,
> + __entry->status)
> +);
> +
> +TRACE_EVENT(i915_scheduler_remove,
> + TP_PROTO(struct intel_engine_cs *ring,
> + u32 min_seqno, bool do_submit),
> + TP_ARGS(ring, min_seqno, do_submit),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, min_seqno)
> + __field(bool, do_submit)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->min_seqno = min_seqno;
> + __entry->do_submit = do_submit;
> + ),
> +
> + TP_printk("ring=%d, min_seqno = %d, do_submit=%d",
> + __entry->ring, __entry->min_seqno, __entry->do_submit)
> +);
> +
> +TRACE_EVENT(i915_scheduler_destroy,
> + TP_PROTO(struct intel_engine_cs *ring,
> + struct i915_scheduler_queue_entry *node),
> + TP_ARGS(ring, node),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->uniq = node ? node->params.request->uniq
> : 0;
> + __entry->seqno = node ? node->params.request->seqno
> : 0;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d",
> + __entry->ring, __entry->uniq, __entry->seqno)
> +);
> +
> +TRACE_EVENT(i915_scheduler_pop_from_queue,
> + TP_PROTO(struct intel_engine_cs *ring,
> + struct i915_scheduler_queue_entry *node),
> + TP_ARGS(ring, node),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->uniq = node ? node->params.request->uniq
> : 0;
> + __entry->seqno = node ? node->params.request->seqno
> : 0;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d",
> + __entry->ring, __entry->uniq, __entry->seqno)
> +);
> +
> +TRACE_EVENT(i915_scheduler_node_state_change,
> + TP_PROTO(struct intel_engine_cs *ring,
> + struct i915_scheduler_queue_entry *node),
> + TP_ARGS(ring, node),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + __field(u32, status)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->uniq = node ? node->params.request->uniq
> : 0;
> + __entry->seqno = node->params.request->seqno;
> + __entry->status = node->status;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d, status=%d",
> + __entry->ring, __entry->uniq, __entry->seqno,
> + __entry->status)
> +);
> +
> +TRACE_EVENT(i915_gem_ring_queue,
> + TP_PROTO(struct intel_engine_cs *ring,
> + struct i915_execbuffer_params *params),
> + TP_ARGS(ring, params),
> +
> + TP_STRUCT__entry(
> + __field(u32, ring)
> + __field(u32, uniq)
> + __field(u32, seqno)
> + ),
> +
> + TP_fast_assign(
> + __entry->ring = ring->id;
> + __entry->uniq = params->request->uniq;
> + __entry->seqno = params->request->seqno;
> + ),
> +
> + TP_printk("ring=%d, uniq=%d, seqno=%d", __entry->ring,
> + __entry->uniq, __entry->seqno)
> +);
> +
> #endif /* _I915_TRACE_H_ */
>
> /* This part must be outside protection */
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c
> b/drivers/gpu/drm/i915/intel_lrc.c
> index 9c7a79a..2b9f49c 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -954,6 +954,8 @@ int intel_execlists_submission(struct
> i915_execbuffer_params *params,
>
> i915_gem_execbuffer_move_to_active(vmas, params->request);
>
> + trace_i915_gem_ring_queue(ring, params);
> +
> qe = container_of(params, typeof(*qe), params);
> ret = i915_scheduler_queue_execbuffer(qe);
> if (ret)
>
Looks fine.
Reviewed-by: Jesse Barnes <jbar...@virtuousgeek.org>
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