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.
Changes since v1:
- Call shmem put pages directly, the callback would
go down the phys free path.
Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellst...@linux.intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_object.h | 3 ++-
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(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h
b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index c1d7de6ebd4f..e9a8ee96d64c 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -69,10 +69,11 @@ 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);
-
void i915_gem_flush_free_objects(struct drm_i915_private *i915);
struct sg_table *
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_phys.c
b/drivers/gpu/drm/i915/gem/i915_gem_phys.c
index 99ab42380826..2a03740f837c 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 67add077624d..9fa687becd3c 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)
--
2.30.0
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