[PATCH 05/51] drm/i915/selftests: Reorder request allocation vs vma pinning
Chris Wilson
chris at chris-wilson.co.uk
Mon Dec 3 13:15:09 UTC 2018
Impose a restraint that we have all vma pinned for a request prior to
its allocation. This is to simplify request construction, and should
facilitate unravelling the lock interdependencies later.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/selftests/huge_pages.c | 31 +++--
drivers/gpu/drm/i915/selftests/igt_spinner.c | 86 ++++++------
.../gpu/drm/i915/selftests/intel_hangcheck.c | 123 +++++++++---------
3 files changed, 119 insertions(+), 121 deletions(-)
diff --git a/drivers/gpu/drm/i915/selftests/huge_pages.c b/drivers/gpu/drm/i915/selftests/huge_pages.c
index 26c065c8d2c0..a0c7cbc212ba 100644
--- a/drivers/gpu/drm/i915/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/selftests/huge_pages.c
@@ -972,7 +972,6 @@ static int gpu_write(struct i915_vma *vma,
{
struct i915_request *rq;
struct i915_vma *batch;
- int flags = 0;
int err;
GEM_BUG_ON(!intel_engine_can_store_dword(engine));
@@ -981,14 +980,14 @@ static int gpu_write(struct i915_vma *vma,
if (err)
return err;
- rq = i915_request_alloc(engine, ctx);
- if (IS_ERR(rq))
- return PTR_ERR(rq);
-
batch = gpu_write_dw(vma, dword * sizeof(u32), value);
- if (IS_ERR(batch)) {
- err = PTR_ERR(batch);
- goto err_request;
+ if (IS_ERR(batch))
+ return PTR_ERR(batch);
+
+ rq = i915_request_alloc(engine, ctx);
+ if (IS_ERR(rq)) {
+ err = PTR_ERR(rq);
+ goto err_batch;
}
err = i915_vma_move_to_active(batch, rq, 0);
@@ -996,21 +995,21 @@ static int gpu_write(struct i915_vma *vma,
goto err_request;
i915_gem_object_set_active_reference(batch->obj);
- i915_vma_unpin(batch);
- i915_vma_close(batch);
- err = engine->emit_bb_start(rq,
- batch->node.start, batch->node.size,
- flags);
+ err = i915_vma_move_to_active(vma, rq, EXEC_OBJECT_WRITE);
if (err)
goto err_request;
- err = i915_vma_move_to_active(vma, rq, EXEC_OBJECT_WRITE);
+ err = engine->emit_bb_start(rq,
+ batch->node.start, batch->node.size,
+ 0);
+err_request:
if (err)
i915_request_skip(rq, err);
-
-err_request:
i915_request_add(rq);
+err_batch:
+ i915_vma_unpin(batch);
+ i915_vma_close(batch);
return err;
}
diff --git a/drivers/gpu/drm/i915/selftests/igt_spinner.c b/drivers/gpu/drm/i915/selftests/igt_spinner.c
index 8cd34f6e6859..0e70df0230b8 100644
--- a/drivers/gpu/drm/i915/selftests/igt_spinner.c
+++ b/drivers/gpu/drm/i915/selftests/igt_spinner.c
@@ -68,48 +68,65 @@ static u64 hws_address(const struct i915_vma *hws,
return hws->node.start + seqno_offset(rq->fence.context);
}
-static int emit_recurse_batch(struct igt_spinner *spin,
- struct i915_request *rq,
- u32 arbitration_command)
+static int move_to_active(struct i915_vma *vma,
+ struct i915_request *rq,
+ unsigned int flags)
{
- struct i915_address_space *vm = &rq->gem_context->ppgtt->vm;
+ int err;
+
+ err = i915_vma_move_to_active(vma, rq, flags);
+ if (err)
+ return err;
+
+ if (!i915_gem_object_has_active_reference(vma->obj)) {
+ i915_gem_object_get(vma->obj);
+ i915_gem_object_set_active_reference(vma->obj);
+ }
+
+ return 0;
+}
+
+struct i915_request *
+igt_spinner_create_request(struct igt_spinner *spin,
+ struct i915_gem_context *ctx,
+ struct intel_engine_cs *engine,
+ u32 arbitration_command)
+{
+ struct i915_address_space *vm = &ctx->ppgtt->vm;
+ struct i915_request *rq = NULL;
struct i915_vma *hws, *vma;
u32 *batch;
int err;
vma = i915_vma_instance(spin->obj, vm, NULL);
if (IS_ERR(vma))
- return PTR_ERR(vma);
+ return ERR_CAST(vma);
hws = i915_vma_instance(spin->hws, vm, NULL);
if (IS_ERR(hws))
- return PTR_ERR(hws);
+ return ERR_CAST(hws);
err = i915_vma_pin(vma, 0, 0, PIN_USER);
if (err)
- return err;
+ return ERR_PTR(err);
err = i915_vma_pin(hws, 0, 0, PIN_USER);
if (err)
goto unpin_vma;
- err = i915_vma_move_to_active(vma, rq, 0);
- if (err)
+ rq = i915_request_alloc(engine, ctx);
+ if (IS_ERR(rq)) {
+ err = PTR_ERR(rq);
goto unpin_hws;
-
- if (!i915_gem_object_has_active_reference(vma->obj)) {
- i915_gem_object_get(vma->obj);
- i915_gem_object_set_active_reference(vma->obj);
}
- err = i915_vma_move_to_active(hws, rq, 0);
+ err = move_to_active(vma, rq, 0);
if (err)
- goto unpin_hws;
+ goto cancel_rq;
- if (!i915_gem_object_has_active_reference(hws->obj)) {
- i915_gem_object_get(hws->obj);
- i915_gem_object_set_active_reference(hws->obj);
- }
+ err = move_to_active(hws, rq, 0);
+ if (err)
+ goto cancel_rq;
batch = spin->batch;
@@ -127,35 +144,18 @@ static int emit_recurse_batch(struct igt_spinner *spin,
i915_gem_chipset_flush(spin->i915);
- err = rq->engine->emit_bb_start(rq, vma->node.start, PAGE_SIZE, 0);
+ err = engine->emit_bb_start(rq, vma->node.start, PAGE_SIZE, 0);
+cancel_rq:
+ if (err) {
+ i915_request_skip(rq, err);
+ i915_request_add(rq);
+ }
unpin_hws:
i915_vma_unpin(hws);
unpin_vma:
i915_vma_unpin(vma);
- return err;
-}
-
-struct i915_request *
-igt_spinner_create_request(struct igt_spinner *spin,
- struct i915_gem_context *ctx,
- struct intel_engine_cs *engine,
- u32 arbitration_command)
-{
- struct i915_request *rq;
- int err;
-
- rq = i915_request_alloc(engine, ctx);
- if (IS_ERR(rq))
- return rq;
-
- err = emit_recurse_batch(spin, rq, arbitration_command);
- if (err) {
- i915_request_add(rq);
- return ERR_PTR(err);
- }
-
- return rq;
+ return err ? ERR_PTR(err) : rq;
}
static u32
diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
index a48fbe2557ea..0ff813ad3462 100644
--- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
@@ -102,52 +102,87 @@ static u64 hws_address(const struct i915_vma *hws,
return hws->node.start + offset_in_page(sizeof(u32)*rq->fence.context);
}
-static int emit_recurse_batch(struct hang *h,
- struct i915_request *rq)
+static int move_to_active(struct i915_vma *vma,
+ struct i915_request *rq,
+ unsigned int flags)
+{
+ int err;
+
+ err = i915_vma_move_to_active(vma, rq, flags);
+ if (err)
+ return err;
+
+ if (!i915_gem_object_has_active_reference(vma->obj)) {
+ i915_gem_object_get(vma->obj);
+ i915_gem_object_set_active_reference(vma->obj);
+ }
+
+ return 0;
+}
+
+static struct i915_request *
+hang_create_request(struct hang *h, struct intel_engine_cs *engine)
{
struct drm_i915_private *i915 = h->i915;
struct i915_address_space *vm =
- rq->gem_context->ppgtt ?
- &rq->gem_context->ppgtt->vm :
- &i915->ggtt.vm;
+ h->ctx->ppgtt ? &h->ctx->ppgtt->vm : &i915->ggtt.vm;
+ struct i915_request *rq = NULL;
struct i915_vma *hws, *vma;
unsigned int flags;
u32 *batch;
int err;
+ if (i915_gem_object_is_active(h->obj)) {
+ struct drm_i915_gem_object *obj;
+ void *vaddr;
+
+ obj = i915_gem_object_create_internal(h->i915, PAGE_SIZE);
+ if (IS_ERR(obj))
+ return ERR_CAST(obj);
+
+ vaddr = i915_gem_object_pin_map(obj,
+ i915_coherent_map_type(h->i915));
+ if (IS_ERR(vaddr)) {
+ i915_gem_object_put(obj);
+ return ERR_CAST(vaddr);
+ }
+
+ i915_gem_object_unpin_map(h->obj);
+ i915_gem_object_put(h->obj);
+
+ h->obj = obj;
+ h->batch = vaddr;
+ }
+
vma = i915_vma_instance(h->obj, vm, NULL);
if (IS_ERR(vma))
- return PTR_ERR(vma);
+ return ERR_CAST(vma);
hws = i915_vma_instance(h->hws, vm, NULL);
if (IS_ERR(hws))
- return PTR_ERR(hws);
+ return ERR_CAST(hws);
err = i915_vma_pin(vma, 0, 0, PIN_USER);
if (err)
- return err;
+ return ERR_PTR(err);
err = i915_vma_pin(hws, 0, 0, PIN_USER);
if (err)
goto unpin_vma;
- err = i915_vma_move_to_active(vma, rq, 0);
- if (err)
+ rq = i915_request_alloc(engine, h->ctx);
+ if (IS_ERR(rq)) {
+ err = PTR_ERR(rq);
goto unpin_hws;
-
- if (!i915_gem_object_has_active_reference(vma->obj)) {
- i915_gem_object_get(vma->obj);
- i915_gem_object_set_active_reference(vma->obj);
}
- err = i915_vma_move_to_active(hws, rq, 0);
+ err = move_to_active(vma, rq, 0);
if (err)
- goto unpin_hws;
+ goto cancel_rq;
- if (!i915_gem_object_has_active_reference(hws->obj)) {
- i915_gem_object_get(hws->obj);
- i915_gem_object_set_active_reference(hws->obj);
- }
+ err = move_to_active(hws, rq, 0);
+ if (err)
+ goto cancel_rq;
batch = h->batch;
if (INTEL_GEN(i915) >= 8) {
@@ -212,52 +247,16 @@ static int emit_recurse_batch(struct hang *h,
err = rq->engine->emit_bb_start(rq, vma->node.start, PAGE_SIZE, flags);
+cancel_rq:
+ if (err) {
+ i915_request_skip(rq, err);
+ i915_request_add(rq);
+ }
unpin_hws:
i915_vma_unpin(hws);
unpin_vma:
i915_vma_unpin(vma);
- return err;
-}
-
-static struct i915_request *
-hang_create_request(struct hang *h, struct intel_engine_cs *engine)
-{
- struct i915_request *rq;
- int err;
-
- if (i915_gem_object_is_active(h->obj)) {
- struct drm_i915_gem_object *obj;
- void *vaddr;
-
- obj = i915_gem_object_create_internal(h->i915, PAGE_SIZE);
- if (IS_ERR(obj))
- return ERR_CAST(obj);
-
- vaddr = i915_gem_object_pin_map(obj,
- i915_coherent_map_type(h->i915));
- if (IS_ERR(vaddr)) {
- i915_gem_object_put(obj);
- return ERR_CAST(vaddr);
- }
-
- i915_gem_object_unpin_map(h->obj);
- i915_gem_object_put(h->obj);
-
- h->obj = obj;
- h->batch = vaddr;
- }
-
- rq = i915_request_alloc(engine, h->ctx);
- if (IS_ERR(rq))
- return rq;
-
- err = emit_recurse_batch(h, rq);
- if (err) {
- i915_request_add(rq);
- return ERR_PTR(err);
- }
-
- return rq;
+ return err ? ERR_PTR(err) : rq;
}
static u32 hws_seqno(const struct hang *h, const struct i915_request *rq)
--
2.20.0.rc1
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