To help avoid evicting already resident buffers from the batch we're
processing, perform locking as a separate step.
Signed-off-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
---
.../gpu/drm/i915/gem/i915_gem_execbuffer.c | 25 ++++++++++++++++---
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 201fed19d120..394eb40c95b5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -922,21 +922,38 @@ static int eb_lookup_vmas(struct i915_execbuffer *eb)
return err;
}
-static int eb_validate_vmas(struct i915_execbuffer *eb)
+static int eb_lock_vmas(struct i915_execbuffer *eb)
{
unsigned int i;
int err;
- INIT_LIST_HEAD(&eb->unbound);
-
for (i = 0; i < eb->buffer_count; i++) {
- struct drm_i915_gem_exec_object2 *entry = &eb->exec[i];
struct eb_vma *ev = &eb->vma[i];
struct i915_vma *vma = ev->vma;
err = i915_gem_object_lock(vma->obj, &eb->ww);
if (err)
return err;
+ }
+
+ return 0;
+}
+
+static int eb_validate_vmas(struct i915_execbuffer *eb)
+{
+ unsigned int i;
+ int err;
+
+ INIT_LIST_HEAD(&eb->unbound);
+
+ err = eb_lock_vmas(eb);
+ if (err)
+ return err;
+
+ for (i = 0; i < eb->buffer_count; i++) {
+ struct drm_i915_gem_exec_object2 *entry = &eb->exec[i];
+ struct eb_vma *ev = &eb->vma[i];
+ struct i915_vma *vma = ev->vma;
err = eb_pin_vma(eb, entry, ev);
if (err == -EDEADLK)
--
2.31.1
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