Add a selftest to exercise asynchronous migration and -unbining.
Extend the gem_migrate selftest to perform the migrations while
depending on a spinner and a bound vma set up on the migrated
buffer object.
Signed-off-by: Thomas Hellström <thomas.hellst...@linux.intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_object.c | 12 ++
drivers/gpu/drm/i915/gem/i915_gem_object.h | 3 +
.../drm/i915/gem/selftests/i915_gem_migrate.c | 192 ++++++++++++++++--
3 files changed, 192 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c
b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index d87b508b59b1..1a9e1f940a7d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -756,6 +756,18 @@ i915_gem_object_get_moving_fence(struct
drm_i915_gem_object *obj)
return dma_fence_get(i915_gem_to_ttm(obj)->moving);
}
+void i915_gem_object_set_moving_fence(struct drm_i915_gem_object *obj,
+ struct dma_fence *fence)
+{
+ struct dma_fence **moving = &i915_gem_to_ttm(obj)->moving;
+
+ if (*moving == fence)
+ return;
+
+ dma_fence_put(*moving);
+ *moving = dma_fence_get(fence);
+}
+
/**
* i915_gem_object_wait_moving_fence - Wait for the object's moving fence if
any
* @obj: The object whose moving fence to wait for.
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h
b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index f66d46882ea7..1d17ffff8236 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -524,6 +524,9 @@ i915_gem_object_finish_access(struct drm_i915_gem_object
*obj)
struct dma_fence *
i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj);
+void i915_gem_object_set_moving_fence(struct drm_i915_gem_object *obj,
+ struct dma_fence *fence);
+
int i915_gem_object_wait_moving_fence(struct drm_i915_gem_object *obj,
bool intr);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c
index ecb691c81d1e..d534141b2cf7 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c
@@ -4,8 +4,13 @@
*/
#include "gt/intel_migrate.h"
+#include "gt/intel_gpu_commands.h"
#include "gem/i915_gem_ttm_move.h"
+#include "i915_deps.h"
+
+#include "selftests/igt_spinner.h"
+
static int igt_fill_check_buffer(struct drm_i915_gem_object *obj,
bool fill)
{
@@ -101,7 +106,8 @@ static int igt_same_create_migrate(void *arg)
}
static int lmem_pages_migrate_one(struct i915_gem_ww_ctx *ww,
- struct drm_i915_gem_object *obj)
+ struct drm_i915_gem_object *obj,
+ struct i915_vma *vma)
{
int err;
@@ -109,6 +115,24 @@ static int lmem_pages_migrate_one(struct i915_gem_ww_ctx *ww,
if (err)
return err;
+ if (vma) {
+ err = i915_vma_pin_ww(vma, ww, obj->base.size, 0,
+ 0UL | PIN_OFFSET_FIXED |
+ PIN_USER);
+ if (err) {
+ if (err != -EINTR && err != ERESTARTSYS &&
+ err != -EDEADLK)
+ pr_err("Failed to pin vma.\n");
+ return err;
+ }
+
+ i915_vma_unpin(vma);
+ }
+
+ /*
+ * Migration will implicitly unbind (asynchronously) any bound
+ * vmas.
+ */
if (i915_gem_object_is_lmem(obj)) {
err = i915_gem_object_migrate(obj, ww, INTEL_REGION_SMEM);
if (err) {
@@ -149,11 +173,15 @@ static int lmem_pages_migrate_one(struct i915_gem_ww_ctx
*ww,
return err;
}
-static int igt_lmem_pages_migrate(void *arg)
+static int __igt_lmem_pages_migrate(struct intel_gt *gt,
+ struct i915_address_space *vm,
+ struct i915_deps *deps,
+ struct igt_spinner *spin,
+ struct dma_fence *spin_fence)
{
- struct intel_gt *gt = arg;
struct drm_i915_private *i915 = gt->i915;
struct drm_i915_gem_object *obj;
+ struct i915_vma *vma = NULL;
struct i915_gem_ww_ctx ww;
struct i915_request *rq;
int err;
@@ -165,6 +193,14 @@ static int igt_lmem_pages_migrate(void *arg)
if (IS_ERR(obj))
return PTR_ERR(obj);
+ if (vm) {
+ vma = i915_vma_instance(obj, vm, NULL);
+ if (IS_ERR(vma)) {
+ err = PTR_ERR(vma);
+ goto out_put;
+ }
+ }
+
/* Initial GPU fill, sync, CPU initialization. */
for_i915_gem_ww(&ww, err, true) {
err = i915_gem_object_lock(obj, &ww);
@@ -175,25 +211,23 @@ static int igt_lmem_pages_migrate(void *arg)
if (err)
continue;
- err = intel_migrate_clear(>->migrate, &ww, NULL,
+ err = intel_migrate_clear(>->migrate, &ww, deps,
obj->mm.pages->sgl, obj->cache_level,
i915_gem_object_is_lmem(obj),
0xdeadbeaf, &rq);
if (rq) {
dma_resv_add_excl_fence(obj->base.resv, &rq->fence);
+ i915_gem_object_set_moving_fence(obj, &rq->fence);
i915_request_put(rq);
}
if (err)
continue;
- err = i915_gem_object_wait(obj, I915_WAIT_INTERRUPTIBLE,
- 5 * HZ);
- if (err)
- continue;
-
- err = igt_fill_check_buffer(obj, true);
- if (err)
- continue;
+ if (!vma) {
+ err = igt_fill_check_buffer(obj, true);
+ if (err)
+ continue;
