drm/i915: Removed duplicate members from submit_request
Where there were duplicate variables for the tail, context and ring (engine)
in the gem request and the execlist queue item, use the one from the request
and remove the duplicate from the execlist queue item.
Issue: VIZ-4274
v1: Rebase
v2: Fixed build issues. Keep separate postfix & tail pointers as these are
used in different ways. Reinserted missing full tail pointer update.
Signed-off-by: Nick Hoath <nicholas.hoath@intel.com>
Reviewed-by: Thomas Daniel <thomas.daniel@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index f56cf62..064efec 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1968,11 +1968,11 @@
if (head_req) {
struct drm_i915_gem_object *ctx_obj;
- ctx_obj = head_req->ctx->engine[ring_id].state;
+ ctx_obj = head_req->request->ctx->engine[ring_id].state;
seq_printf(m, "\tHead request id: %u\n",
intel_execlists_ctx_id(ctx_obj));
seq_printf(m, "\tHead request tail: %u\n",
- head_req->tail);
+ head_req->request->tail);
}
seq_putc(m, '\n');
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 600a225..81d102a 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2089,7 +2089,14 @@
/** Position in the ringbuffer of the start of the request */
u32 head;
- /** Position in the ringbuffer of the end of the request */
+ /**
+ * Position in the ringbuffer of the start of the postfix.
+ * This is required to calculate the maximum available ringbuffer
+ * space without overwriting the postfix.
+ */
+ u32 postfix;
+
+ /** Position in the ringbuffer of the end of the whole request */
u32 tail;
/** Context related to this request */
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 6c40365..e6768d3 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2453,7 +2453,7 @@
request_ring_position = intel_ring_get_tail(ringbuf);
if (i915.enable_execlists) {
- ret = ring->emit_request(ringbuf);
+ ret = ring->emit_request(ringbuf, request);
if (ret)
return ret;
} else {
@@ -2463,7 +2463,7 @@
}
request->head = request_start;
- request->tail = request_ring_position;
+ request->postfix = request_ring_position;
/* Whilst this request exists, batch_obj will be on the
* active_list, and so will hold the active reference. Only when this
@@ -2657,7 +2657,7 @@
execlist_link);
list_del(&submit_req->execlist_link);
intel_runtime_pm_put(dev_priv);
- i915_gem_context_unreference(submit_req->ctx);
+ i915_gem_context_unreference(submit_req->request->ctx);
kfree(submit_req);
}
@@ -2783,7 +2783,7 @@
* of tail of the request to update the last known position
* of the GPU head.
*/
- ringbuf->last_retired_head = request->tail;
+ ringbuf->last_retired_head = request->postfix;
i915_gem_free_request(request);
}
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index be5c990..48ddbf4 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1052,7 +1052,7 @@
erq = &error->ring[i].requests[count++];
erq->seqno = request->seqno;
erq->jiffies = request->emitted_jiffies;
- erq->tail = request->tail;
+ erq->tail = request->postfix;
}
}
}
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 7992af8..5b6e369 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -417,7 +417,7 @@
execlist_link) {
if (!req0) {
req0 = cursor;
- } else if (req0->ctx == cursor->ctx) {
+ } else if (req0->request->ctx == cursor->request->ctx) {
/* Same ctx: ignore first request, as second request
* will update tail past first request's workload */
cursor->elsp_submitted = req0->elsp_submitted;
@@ -433,9 +433,9 @@
WARN_ON(req1 && req1->elsp_submitted);
- execlists_submit_contexts(ring, req0->ctx, req0->tail,
- req1 ? req1->ctx : NULL,
- req1 ? req1->tail : 0);
+ execlists_submit_contexts(ring, req0->request->ctx, req0->request->tail,
+ req1 ? req1->request->ctx : NULL,
+ req1 ? req1->request->tail : 0);
req0->elsp_submitted++;
if (req1)
@@ -455,7 +455,7 @@
if (head_req != NULL) {
struct drm_i915_gem_object *ctx_obj =
- head_req->ctx->engine[ring->id].state;
+ head_req->request->ctx->engine[ring->id].state;
if (intel_execlists_ctx_id(ctx_obj) == request_id) {
WARN(head_req->elsp_submitted == 0,
"Never submitted head request\n");
@@ -545,15 +545,10 @@
req = kzalloc(sizeof(*req), GFP_KERNEL);
if (req == NULL)
return -ENOMEM;
- req->ctx = to;
- i915_gem_context_reference(req->ctx);
if (to != ring->default_context)
intel_lr_context_pin(ring, to);
- req->ring = ring;
- req->tail = tail;
-
if (!request) {
/*
* If there isn't a request associated with this submission,
@@ -563,11 +558,13 @@
request = kzalloc(sizeof(*request), GFP_KERNEL);
if (request == NULL)
return -ENOMEM;
- request->ctx = to;
request->ring = ring;
}
+ request->ctx = to;
+ request->tail = tail;
req->request = request;
i915_gem_request_reference(request);
+ i915_gem_context_reference(req->request->ctx);
intel_runtime_pm_get(dev_priv);
@@ -584,7 +581,7 @@
struct intel_ctx_submit_request,
execlist_link);
- if (to == tail_req->ctx) {
+ if (to == tail_req->request->ctx) {
WARN(tail_req->elsp_submitted != 0,
"More than 2 already-submitted reqs queued\n");
list_del(&tail_req->execlist_link);
@@ -774,14 +771,14 @@
spin_unlock_irqrestore(&ring->execlist_lock, flags);
list_for_each_entry_safe(req, tmp, &retired_list, execlist_link) {
- struct intel_context *ctx = req->ctx;
+ struct intel_context *ctx = req->request->ctx;
struct drm_i915_gem_object *ctx_obj =
ctx->engine[ring->id].state;
if (ctx_obj && (ctx != ring->default_context))
intel_lr_context_unpin(ring, ctx);
intel_runtime_pm_put(dev_priv);
- i915_gem_context_unreference(req->ctx);
+ i915_gem_context_unreference(ctx);
i915_gem_request_unreference(req->request);
list_del(&req->execlist_link);
kfree(req);
diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index 7a82bc9..376c307 100644
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -105,10 +105,6 @@
* All accesses to the queue are mediated by a spinlock (ring->execlist_lock).
*/
struct intel_ctx_submit_request {
- struct intel_context *ctx;
- struct intel_engine_cs *ring;
- u32 tail;
-
struct list_head execlist_link;
int elsp_submitted;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 23020d6..b1177176 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1949,7 +1949,7 @@
return 0;
list_for_each_entry(request, &ring->request_list, list) {
- if (__intel_ring_space(request->tail, ringbuf->tail,
+ if (__intel_ring_space(request->postfix, ringbuf->tail,
ringbuf->size) >= n) {
break;
}
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 6dbb6f4..32aa3f3 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -239,7 +239,8 @@
struct list_head execlist_retired_req_list;
u8 next_context_status_buffer;
u32 irq_keep_mask; /* bitmask for interrupts that should not be masked */
- int (*emit_request)(struct intel_ringbuffer *ringbuf);
+ int (*emit_request)(struct intel_ringbuffer *ringbuf,
+ struct drm_i915_gem_request *request);
int (*emit_flush)(struct intel_ringbuffer *ringbuf,
u32 invalidate_domains,
u32 flush_domains);