Add some proper flags for the different modes, and shorten the name to something more snappy.
Suggested-by: Tvrtko Ursulin <[email protected]> Signed-off-by: Matthew Auld <[email protected]> --- .../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, -- 2.31.1
