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drm/i915: remove writeback hook

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Ditch the writeback hook and drop i915_gem_object_writeback(). We
already support the shrinker_release_pages hook which can just call
shmem_writeback directly.

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211215110746.865-1-matthew.auld@intel.com
This commit is contained in:
Matthew Auld
2021-12-15 11:07:45 +00:00
parent 57ded5fc98
commit 9354417750
5 changed files with 18 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/gem/i915_gem_object.h
View File

@@ -459,7 +459,6 @@ i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
int i915_gem_object_truncate(struct drm_i915_gem_object *obj);
void i915_gem_object_writeback(struct drm_i915_gem_object *obj);
/**
* i915_gem_object_pin_map - return a contiguous mapping of the entire object

1
drivers/gpu/drm/i915/gem/i915_gem_object_types.h
View File

@@ -57,7 +57,6 @@ 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);
void (*writeback)(struct drm_i915_gem_object *obj);
int (*shrinker_release_pages)(struct drm_i915_gem_object *obj,
bool no_gpu_wait,
bool should_writeback);

10
drivers/gpu/drm/i915/gem/i915_gem_pages.c
View File

@@ -168,16 +168,6 @@ int i915_gem_object_truncate(struct drm_i915_gem_object *obj)
return 0;
}
/* Try to discard unwanted pages */
void i915_gem_object_writeback(struct drm_i915_gem_object *obj)
{
assert_object_held_shared(obj);
GEM_BUG_ON(i915_gem_object_has_pages(obj));
if (obj->ops->writeback)
obj->ops->writeback(obj);
}
static void __i915_gem_object_reset_page_iter(struct drm_i915_gem_object *obj)
{
struct radix_tree_iter iter;

19
drivers/gpu/drm/i915/gem/i915_gem_shmem.c
View File

@@ -331,6 +331,23 @@ 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)
{
switch (obj->mm.madv) {
case I915_MADV_DONTNEED:
return i915_gem_object_truncate(obj);
case __I915_MADV_PURGED:
return 0;
}
if (writeback)
shmem_writeback(obj);
return 0;
}
void
__i915_gem_object_release_shmem(struct drm_i915_gem_object *obj,
struct sg_table *pages,
@@ -503,7 +520,7 @@ const struct drm_i915_gem_object_ops i915_gem_shmem_ops = {
.get_pages = shmem_get_pages,
.put_pages = shmem_put_pages,
.truncate = shmem_truncate,
.writeback = shmem_writeback,
.shrinker_release_pages = shmem_shrinker_release_pages,
.pwrite = shmem_pwrite,
.pread = shmem_pread,

12
drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
View File

@@ -61,18 +61,6 @@ static int try_to_writeback(struct drm_i915_gem_object *obj, unsigned int flags)
return obj->ops->shrinker_release_pages(obj,
!(flags & I915_SHRINK_ACTIVE),
flags & I915_SHRINK_WRITEBACK);
switch (obj->mm.madv) {
case I915_MADV_DONTNEED:
i915_gem_object_truncate(obj);
return 0;
case __I915_MADV_PURGED:
return 0;
}
if (flags & I915_SHRINK_WRITEBACK)
i915_gem_object_writeback(obj);
return 0;
}