Suggested-by: Tvrtko Ursulin <tvrtko.ursu...@linux.intel.com>
Signed-off-by: Matthew Auld <matthew.a...@intel.com>
---
.../gpu/drm/i915/gem/i915_gem_object_types.h | 23 ++++++++++++++++---
drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 8 +++----
drivers/gpu/drm/i915/gem/i915_gem_shrinker.c | 16 +++++++++----
drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 10 ++++----
4 files changed, 39 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
index 00c844caeabd..6f446cca4322 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
@@ -57,9 +57,26 @@ struct drm_i915_gem_object_ops {
void (*put_pages)(struct drm_i915_gem_object *obj,
struct sg_table *pages);
int (*truncate)(struct drm_i915_gem_object *obj);
- int (*shrinker_release_pages)(struct drm_i915_gem_object *obj,
- bool no_gpu_wait,
- bool should_writeback);
+ /**
+ * shrink - Perform further backend specific actions to facilate
+ * shrinking.
+ * @obj: The gem object
+ * @flags: Extra flags to control shrinking behaviour in the backend
+ *
+ * Possible values for @flags:
+ *
+ * I915_GEM_OBJECT_SHRINK_WRITEBACK - Try to perform writeback of
the
+ * backing pages, if supported.
+ *
+ * I915_GEM_OBJECT_SHRINK_NO_GPU_WAIT - Don't wait for the object to
+ * idle. Active objects can be considered later. The TTM backend
for
+ * example might have aync migrations going on, which don't use any
+ * i915_vma to track the active GTT binding, and hence having an
unbound
+ * object might not be enough.
+ */
+#define I915_GEM_OBJECT_SHRINK_WRITEBACK BIT(0)
+#define I915_GEM_OBJECT_SHRINK_NO_GPU_WAIT BIT(1)
+ int (*shrink)(struct drm_i915_gem_object *obj, unsigned int flags);
int (*pread)(struct drm_i915_gem_object *obj,
const struct drm_i915_gem_pread *arg);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
index 7fdf4fa10b0e..6c57b0a79c8a 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c
@@ -331,9 +331,7 @@ shmem_writeback(struct drm_i915_gem_object *obj)
__shmem_writeback(obj->base.size, obj->base.filp->f_mapping);
}
-static int shmem_shrinker_release_pages(struct drm_i915_gem_object *obj,
- bool no_gpu_wait,
- bool writeback)
+static int shmem_shrink(struct drm_i915_gem_object *obj, unsigned int
flags)
{
switch (obj->mm.madv) {
case I915_MADV_DONTNEED:
@@ -342,7 +340,7 @@ static int shmem_shrinker_release_pages(struct
drm_i915_gem_object *obj,
return 0;
}
- if (writeback)
+ if (flags & I915_GEM_OBJECT_SHRINK_WRITEBACK)
shmem_writeback(obj);
return 0;
@@ -520,7 +518,7 @@ const struct drm_i915_gem_object_ops
i915_gem_shmem_ops = {
.get_pages = shmem_get_pages,
.put_pages = shmem_put_pages,
.truncate = shmem_truncate,
- .shrinker_release_pages = shmem_shrinker_release_pages,
+ .shrink = shmem_shrink,
.pwrite = shmem_pwrite,
.pread = shmem_pread,
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
index fd54e05521f6..968ca0fdd57b 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
@@ -57,10 +57,18 @@ static bool unsafe_drop_pages(struct
drm_i915_gem_object *obj,
static int try_to_writeback(struct drm_i915_gem_object *obj,
unsigned int flags)
{
- if (obj->ops->shrinker_release_pages)
- return obj->ops->shrinker_release_pages(obj,
- !(flags & I915_SHRINK_ACTIVE),
- flags & I915_SHRINK_WRITEBACK);
+ if (obj->ops->shrink) {
+ unsigned int shrink_flags = 0;
+
+ if (!(flags & I915_SHRINK_ACTIVE))
+ shrink_flags |= I915_GEM_OBJECT_SHRINK_NO_GPU_WAIT;
+
+ if (flags & I915_SHRINK_WRITEBACK)
+ shrink_flags |= I915_GEM_OBJECT_SHRINK_WRITEBACK;
+
+ return obj->ops->shrink(obj, shrink_flags);
+ }
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index 923cc7ad8d70..21277f3c64e7 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -424,16 +424,14 @@ int i915_ttm_purge(struct drm_i915_gem_object *obj)
return 0;
}
-static int i915_ttm_shrinker_release_pages(struct drm_i915_gem_object
*obj,
- bool no_wait_gpu,
- bool should_writeback)
+static int i915_ttm_shrink(struct drm_i915_gem_object *obj, unsigned
int flags)
{
struct ttm_buffer_object *bo = i915_gem_to_ttm(obj);
struct i915_ttm_tt *i915_tt =
container_of(bo->ttm, typeof(*i915_tt), ttm);
struct ttm_operation_ctx ctx = {
.interruptible = true,
- .no_wait_gpu = no_wait_gpu,
+ .no_wait_gpu = flags & I915_GEM_OBJECT_SHRINK_NO_GPU_WAIT,
};
struct ttm_placement place = {};
int ret;
@@ -467,7 +465,7 @@ static int i915_ttm_shrinker_release_pages(struct
drm_i915_gem_object *obj,
return ret;
}
- if (should_writeback)
+ if (flags & I915_GEM_OBJECT_SHRINK_WRITEBACK)
__shmem_writeback(obj->base.size, i915_tt->filp->f_mapping);
return 0;
@@ -953,7 +951,7 @@ static const struct drm_i915_gem_object_ops
i915_gem_ttm_obj_ops = {
.get_pages = i915_ttm_get_pages,
.put_pages = i915_ttm_put_pages,
.truncate = i915_ttm_purge,
- .shrinker_release_pages = i915_ttm_shrinker_release_pages,
+ .shrink = i915_ttm_shrink,
.adjust_lru = i915_ttm_adjust_lru,
.delayed_free = i915_ttm_delayed_free,
