From: Maarten Lankhorst maarten.lankhorst@linux.intel.com
Simple adding of i915_gem_object_lock, we may start to pass ww to get_pages() in the future, but that won't be the case here; We override shmem's get_pages() handling by calling i915_gem_object_get_pages_phys(), no ww is needed.
Signed-off-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Thomas Hellström thomas.hellstrom@linux.intel.com --- drivers/gpu/drm/i915/gem/i915_gem_object.h | 2 ++ drivers/gpu/drm/i915/gem/i915_gem_phys.c | 12 ++++++++++-- drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 17 ++++++++++------- 3 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h index e549b88693a2..47da3aff2a79 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h @@ -43,6 +43,8 @@ int i915_gem_object_pread_phys(struct drm_i915_gem_object *obj, const struct drm_i915_gem_pread *args);
int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align); +void i915_gem_object_put_pages_shmem(struct drm_i915_gem_object *obj, + struct sg_table *pages); void i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj, struct sg_table *pages);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_phys.c b/drivers/gpu/drm/i915/gem/i915_gem_phys.c index 4bdd0429c08b..144e4940eede 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_phys.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_phys.c @@ -201,7 +201,7 @@ static int i915_gem_object_shmem_to_phys(struct drm_i915_gem_object *obj) __i915_gem_object_pin_pages(obj);
if (!IS_ERR_OR_NULL(pages)) - i915_gem_shmem_ops.put_pages(obj, pages); + i915_gem_object_put_pages_shmem(obj, pages);
i915_gem_object_release_memory_region(obj); return 0; @@ -232,7 +232,13 @@ int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align) if (err) return err;
- mutex_lock_nested(&obj->mm.lock, I915_MM_GET_PAGES); + err = i915_gem_object_lock_interruptible(obj, NULL); + if (err) + return err; + + err = mutex_lock_interruptible_nested(&obj->mm.lock, I915_MM_GET_PAGES); + if (err) + goto err_unlock;
if (unlikely(!i915_gem_object_has_struct_page(obj))) goto out; @@ -263,6 +269,8 @@ int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align)
out: mutex_unlock(&obj->mm.lock); +err_unlock: + i915_gem_object_unlock(obj); return err; }
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c index d590e0c3bd00..7a59fd1ea4e5 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c @@ -296,18 +296,12 @@ __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj, __start_cpu_write(obj); }
-static void -shmem_put_pages(struct drm_i915_gem_object *obj, struct sg_table *pages) +void i915_gem_object_put_pages_shmem(struct drm_i915_gem_object *obj, struct sg_table *pages) { struct sgt_iter sgt_iter; struct pagevec pvec; struct page *page;
- if (unlikely(!i915_gem_object_has_struct_page(obj))) { - i915_gem_object_put_pages_phys(obj, pages); - return; - } - __i915_gem_object_release_shmem(obj, pages, true);
i915_gem_gtt_finish_pages(obj, pages); @@ -336,6 +330,15 @@ shmem_put_pages(struct drm_i915_gem_object *obj, struct sg_table *pages) kfree(pages); }
+static void +shmem_put_pages(struct drm_i915_gem_object *obj, struct sg_table *pages) +{ + if (likely(i915_gem_object_has_struct_page(obj))) + i915_gem_object_put_pages_shmem(obj, pages); + else + i915_gem_object_put_pages_phys(obj, pages); +} + static int shmem_pwrite(struct drm_i915_gem_object *obj, const struct drm_i915_gem_pwrite *arg)