#include "ttm_module.h"
-static void ttm_bo_global_kobj_release(struct kobject *kobj);
-
-/*
- * ttm_global_mutex - protecting the global BO state
- */
-DEFINE_MUTEX(ttm_global_mutex);
-unsigned ttm_bo_glob_use_count;
-struct ttm_bo_global ttm_bo_glob;
-EXPORT_SYMBOL(ttm_bo_glob);
-
-static struct attribute ttm_bo_count = {
- .name = "bo_count",
- .mode = S_IRUGO
-};
-
/* default destructor */
static void ttm_bo_default_destroy(struct ttm_buffer_object *bo)
{
}
}
-static ssize_t ttm_bo_global_show(struct kobject *kobj,
- struct attribute *attr,
- char *buffer)
-{
- struct ttm_bo_global *glob =
- container_of(kobj, struct ttm_bo_global, kobj);
-
- return snprintf(buffer, PAGE_SIZE, "%d\n",
- atomic_read(&glob->bo_count));
-}
-
-static struct attribute *ttm_bo_global_attrs[] = {
- &ttm_bo_count,
- NULL
-};
-
-static const struct sysfs_ops ttm_bo_global_ops = {
- .show = &ttm_bo_global_show
-};
-
-static struct kobj_type ttm_bo_glob_kobj_type = {
- .release = &ttm_bo_global_kobj_release,
- .sysfs_ops = &ttm_bo_global_ops,
- .default_attrs = ttm_bo_global_attrs
-};
-
static void ttm_bo_del_from_lru(struct ttm_buffer_object *bo)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
- list_del_init(&bo->swap);
list_del_init(&bo->lru);
- if (bdev->driver->del_from_lru_notify)
- bdev->driver->del_from_lru_notify(bo);
+ if (bdev->funcs->del_from_lru_notify)
+ bdev->funcs->del_from_lru_notify(bo);
}
static void ttm_bo_bulk_move_set_pos(struct ttm_lru_bulk_move_pos *pos,
struct ttm_resource *mem,
struct ttm_lru_bulk_move *bulk)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
struct ttm_resource_manager *man;
if (!bo->deleted)
man = ttm_manager_type(bdev, mem->mem_type);
list_move_tail(&bo->lru, &man->lru[bo->priority]);
- if (man->use_tt && bo->ttm &&
- !(bo->ttm->page_flags & (TTM_PAGE_FLAG_SG |
- TTM_PAGE_FLAG_SWAPPED))) {
- struct list_head *swap;
-
- swap = &ttm_bo_glob.swap_lru[bo->priority];
- list_move_tail(&bo->swap, swap);
- }
- if (bdev->driver->del_from_lru_notify)
- bdev->driver->del_from_lru_notify(bo);
+ if (bdev->funcs->del_from_lru_notify)
+ bdev->funcs->del_from_lru_notify(bo);
if (bulk && !bo->pin_count) {
switch (bo->mem.mem_type) {
ttm_bo_bulk_move_set_pos(&bulk->vram[bo->priority], bo);
break;
}
- if (bo->ttm && !(bo->ttm->page_flags &
- (TTM_PAGE_FLAG_SG | TTM_PAGE_FLAG_SWAPPED)))
- ttm_bo_bulk_move_set_pos(&bulk->swap[bo->priority], bo);
}
}
EXPORT_SYMBOL(ttm_bo_move_to_lru_tail);
list_bulk_move_tail(&man->lru[i], &pos->first->lru,
&pos->last->lru);
}
-
- for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) {
- struct ttm_lru_bulk_move_pos *pos = &bulk->swap[i];
- struct list_head *lru;
-
- if (!pos->first)
- continue;
-
- dma_resv_assert_held(pos->first->base.resv);
- dma_resv_assert_held(pos->last->base.resv);
-
- lru = &ttm_bo_glob.swap_lru[i];
- list_bulk_move_tail(lru, &pos->first->swap, &pos->last->swap);
- }
}
EXPORT_SYMBOL(ttm_bo_bulk_move_lru_tail);
struct ttm_operation_ctx *ctx,
struct ttm_place *hop)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
struct ttm_resource_manager *old_man = ttm_manager_type(bdev, bo->mem.mem_type);
struct ttm_resource_manager *new_man = ttm_manager_type(bdev, mem->mem_type);
int ret;
}
}
- ret = bdev->driver->move(bo, evict, ctx, mem, hop);
+ ret = bdev->funcs->move(bo, evict, ctx, mem, hop);
if (ret) {
if (ret == -EMULTIHOP)
return ret;
static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo)
{
- if (bo->bdev->driver->delete_mem_notify)
- bo->bdev->driver->delete_mem_notify(bo);
+ if (bo->bdev->funcs->delete_mem_notify)
+ bo->bdev->funcs->delete_mem_notify(bo);
ttm_bo_tt_destroy(bo);
ttm_resource_free(bo, &bo->mem);
* reference it any more. The only tricky case is the trylock on
* the resv object while holding the lru_lock.
*/
- spin_lock(&ttm_bo_glob.lru_lock);
+ spin_lock(&bo->bdev->lru_lock);
bo->base.resv = &bo->base._resv;
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bo->bdev->lru_lock);
}
return r;
if (unlock_resv)
dma_resv_unlock(bo->base.resv);
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bo->bdev->lru_lock);
lret = dma_resv_wait_timeout_rcu(resv, true, interruptible,
30 * HZ);
else if (lret == 0)
return -EBUSY;
- spin_lock(&ttm_bo_glob.lru_lock);
+ spin_lock(&bo->bdev->lru_lock);
if (unlock_resv && !dma_resv_trylock(bo->base.resv)) {
/*
* We raced, and lost, someone else holds the reservation now,
* delayed destruction would succeed, so just return success
* here.
*/
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bo->bdev->lru_lock);
return 0;
}
ret = 0;
if (ret || unlikely(list_empty(&bo->ddestroy))) {
if (unlock_resv)
dma_resv_unlock(bo->base.resv);
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bo->bdev->lru_lock);
return ret;
}
ttm_bo_del_from_lru(bo);
list_del_init(&bo->ddestroy);
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bo->bdev->lru_lock);
ttm_bo_cleanup_memtype_use(bo);
if (unlock_resv)
* Traverse the delayed list, and call ttm_bo_cleanup_refs on all
* encountered buffers.
*/
-static bool ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all)
+bool ttm_bo_delayed_delete(struct ttm_device *bdev, bool remove_all)
{
- struct ttm_bo_global *glob = &ttm_bo_glob;
struct list_head removed;
bool empty;
INIT_LIST_HEAD(&removed);
- spin_lock(&glob->lru_lock);
+ spin_lock(&bdev->lru_lock);
while (!list_empty(&bdev->ddestroy)) {
struct ttm_buffer_object *bo;
continue;
if (remove_all || bo->base.resv != &bo->base._resv) {
- spin_unlock(&glob->lru_lock);
+ spin_unlock(&bdev->lru_lock);
dma_resv_lock(bo->base.resv, NULL);
- spin_lock(&glob->lru_lock);
+ spin_lock(&bdev->lru_lock);
ttm_bo_cleanup_refs(bo, false, !remove_all, true);
} else if (dma_resv_trylock(bo->base.resv)) {
ttm_bo_cleanup_refs(bo, false, !remove_all, true);
} else {
- spin_unlock(&glob->lru_lock);
+ spin_unlock(&bdev->lru_lock);
}
ttm_bo_put(bo);
- spin_lock(&glob->lru_lock);
+ spin_lock(&bdev->lru_lock);
}
list_splice_tail(&removed, &bdev->ddestroy);
empty = list_empty(&bdev->ddestroy);
- spin_unlock(&glob->lru_lock);
+ spin_unlock(&bdev->lru_lock);
return empty;
}
-static void ttm_bo_delayed_workqueue(struct work_struct *work)
-{
- struct ttm_bo_device *bdev =
- container_of(work, struct ttm_bo_device, wq.work);
-
- if (!ttm_bo_delayed_delete(bdev, false))
- schedule_delayed_work(&bdev->wq,
- ((HZ / 100) < 1) ? 1 : HZ / 100);
-}
-
static void ttm_bo_release(struct kref *kref)
{
struct ttm_buffer_object *bo =
container_of(kref, struct ttm_buffer_object, kref);
- struct ttm_bo_device *bdev = bo->bdev;
- size_t acc_size = bo->acc_size;
+ struct ttm_device *bdev = bo->bdev;
int ret;
if (!bo->deleted) {
30 * HZ);
}
- if (bo->bdev->driver->release_notify)
- bo->bdev->driver->release_notify(bo);
+ if (bo->bdev->funcs->release_notify)
+ bo->bdev->funcs->release_notify(bo);
drm_vma_offset_remove(bdev->vma_manager, &bo->base.vma_node);
ttm_mem_io_free(bdev, &bo->mem);
ttm_bo_flush_all_fences(bo);
bo->deleted = true;
- spin_lock(&ttm_bo_glob.lru_lock);
+ spin_lock(&bo->bdev->lru_lock);
/*
* Make pinned bos immediately available to
kref_init(&bo->kref);
list_add_tail(&bo->ddestroy, &bdev->ddestroy);
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bo->bdev->lru_lock);
schedule_delayed_work(&bdev->wq,
((HZ / 100) < 1) ? 1 : HZ / 100);
return;
}
- spin_lock(&ttm_bo_glob.lru_lock);
+ spin_lock(&bo->bdev->lru_lock);
ttm_bo_del_from_lru(bo);
list_del(&bo->ddestroy);
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bo->bdev->lru_lock);
ttm_bo_cleanup_memtype_use(bo);
dma_resv_unlock(bo->base.resv);
- atomic_dec(&ttm_bo_glob.bo_count);
+ atomic_dec(&ttm_glob.bo_count);
dma_fence_put(bo->moving);
if (!ttm_bo_uses_embedded_gem_object(bo))
dma_resv_fini(&bo->base._resv);
bo->destroy(bo);
- ttm_mem_global_free(&ttm_mem_glob, acc_size);
}
void ttm_bo_put(struct ttm_buffer_object *bo)
}
EXPORT_SYMBOL(ttm_bo_put);
-int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev)
+int ttm_bo_lock_delayed_workqueue(struct ttm_device *bdev)
{
return cancel_delayed_work_sync(&bdev->wq);
}
EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue);
-void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched)
+void ttm_bo_unlock_delayed_workqueue(struct ttm_device *bdev, int resched)
{
if (resched)
schedule_delayed_work(&bdev->wq,
static int ttm_bo_evict(struct ttm_buffer_object *bo,
struct ttm_operation_ctx *ctx)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
struct ttm_resource evict_mem;
struct ttm_placement placement;
struct ttm_place hop;
placement.num_placement = 0;
placement.num_busy_placement = 0;
- bdev->driver->evict_flags(bo, &placement);
+ bdev->funcs->evict_flags(bo, &placement);
if (!placement.num_placement && !placement.num_busy_placement) {
ttm_bo_wait(bo, false, false);
return r == -EDEADLK ? -EBUSY : r;
}
-int ttm_mem_evict_first(struct ttm_bo_device *bdev,
+int ttm_mem_evict_first(struct ttm_device *bdev,
struct ttm_resource_manager *man,
const struct ttm_place *place,
struct ttm_operation_ctx *ctx,
unsigned i;
int ret;
- spin_lock(&ttm_bo_glob.lru_lock);
+ spin_lock(&bdev->lru_lock);
for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) {
list_for_each_entry(bo, &man->lru[i], lru) {
bool busy;
continue;
}
- if (place && !bdev->driver->eviction_valuable(bo,
+ if (place && !bdev->funcs->eviction_valuable(bo,
place)) {
if (locked)
dma_resv_unlock(bo->base.resv);
if (!bo) {
if (busy_bo && !ttm_bo_get_unless_zero(busy_bo))
busy_bo = NULL;
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bdev->lru_lock);
ret = ttm_mem_evict_wait_busy(busy_bo, ctx, ticket);
if (busy_bo)
ttm_bo_put(busy_bo);
return ret;
}
- spin_unlock(&ttm_bo_glob.lru_lock);
+ spin_unlock(&bdev->lru_lock);
ret = ttm_bo_evict(bo, ctx);
if (locked)
return 0;
if (no_wait_gpu) {
+ ret = dma_fence_is_signaled(fence) ? 0 : -EBUSY;
dma_fence_put(fence);
- return -EBUSY;
+ return ret;
}
dma_resv_add_shared_fence(bo->base.resv, fence);
struct ttm_resource *mem,
struct ttm_operation_ctx *ctx)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
struct ttm_resource_manager *man = ttm_manager_type(bdev, mem->mem_type);
struct ww_acquire_ctx *ticket;
int ret;
const struct ttm_place *place,
struct ttm_resource *mem)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
struct ttm_resource_manager *man;
man = ttm_manager_type(bdev, place->mem_type);
mem->mem_type = place->mem_type;
mem->placement = place->flags;
- spin_lock(&ttm_bo_glob.lru_lock);
+ spin_lock(&bo->bdev->lru_lock);
ttm_bo_move_to_lru_tail(bo, mem, NULL);
- spin_unlock(&ttm_bo_glob.lru_lock);
-
+ spin_unlock(&bo->bdev->lru_lock);
return 0;
}
struct ttm_resource *mem,
struct ttm_operation_ctx *ctx)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
bool type_found = false;
int i, ret;
}
EXPORT_SYMBOL(ttm_bo_validate);
-int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
+int ttm_bo_init_reserved(struct ttm_device *bdev,
struct ttm_buffer_object *bo,
size_t size,
enum ttm_bo_type type,
struct ttm_placement *placement,
uint32_t page_alignment,
struct ttm_operation_ctx *ctx,
- size_t acc_size,
struct sg_table *sg,
struct dma_resv *resv,
void (*destroy) (struct ttm_buffer_object *))
{
- struct ttm_mem_global *mem_glob = &ttm_mem_glob;
bool locked;
int ret = 0;
- ret = ttm_mem_global_alloc(mem_glob, acc_size, ctx);
- if (ret) {
- pr_err("Out of kernel memory\n");
- if (destroy)
- (*destroy)(bo);
- else
- kfree(bo);
- return -ENOMEM;
- }
-
bo->destroy = destroy ? destroy : ttm_bo_default_destroy;
kref_init(&bo->kref);
INIT_LIST_HEAD(&bo->lru);
INIT_LIST_HEAD(&bo->ddestroy);
- INIT_LIST_HEAD(&bo->swap);
bo->bdev = bdev;
bo->type = type;
bo->mem.mem_type = TTM_PL_SYSTEM;
bo->mem.bus.addr = NULL;
bo->moving = NULL;
bo->mem.placement = 0;
- bo->acc_size = acc_size;
bo->pin_count = 0;
bo->sg = sg;
if (resv) {
dma_resv_init(&bo->base._resv);
drm_vma_node_reset(&bo->base.vma_node);
}
- atomic_inc(&ttm_bo_glob.bo_count);
+ atomic_inc(&ttm_glob.bo_count);
/*
* For ttm_bo_type_device buffers, allocate
}
EXPORT_SYMBOL(ttm_bo_init_reserved);
-int ttm_bo_init(struct ttm_bo_device *bdev,
+int ttm_bo_init(struct ttm_device *bdev,
struct ttm_buffer_object *bo,
size_t size,
enum ttm_bo_type type,
struct ttm_placement *placement,
uint32_t page_alignment,
bool interruptible,
- size_t acc_size,
struct sg_table *sg,
struct dma_resv *resv,
void (*destroy) (struct ttm_buffer_object *))
int ret;
ret = ttm_bo_init_reserved(bdev, bo, size, type, placement,
- page_alignment, &ctx, acc_size,
- sg, resv, destroy);
+ page_alignment, &ctx, sg, resv, destroy);
if (ret)
return ret;
}
EXPORT_SYMBOL(ttm_bo_init);
-size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev,
- unsigned long bo_size,
- unsigned struct_size)
-{
- unsigned npages = (PAGE_ALIGN(bo_size)) >> PAGE_SHIFT;
- size_t size = 0;
-
- size += ttm_round_pot(struct_size);
- size += ttm_round_pot(npages * (2*sizeof(void *) + sizeof(dma_addr_t)));
- size += ttm_round_pot(sizeof(struct ttm_tt));
- return size;
-}
-EXPORT_SYMBOL(ttm_bo_dma_acc_size);
-
-static void ttm_bo_global_kobj_release(struct kobject *kobj)
-{
- struct ttm_bo_global *glob =
- container_of(kobj, struct ttm_bo_global, kobj);
-
- __free_page(glob->dummy_read_page);
-}
-
-static void ttm_bo_global_release(void)
-{
- struct ttm_bo_global *glob = &ttm_bo_glob;
-
- mutex_lock(&ttm_global_mutex);
- if (--ttm_bo_glob_use_count > 0)
- goto out;
-
- kobject_del(&glob->kobj);
- kobject_put(&glob->kobj);
- ttm_mem_global_release(&ttm_mem_glob);
- memset(glob, 0, sizeof(*glob));
-out:
- mutex_unlock(&ttm_global_mutex);
-}
-
-static int ttm_bo_global_init(void)
-{
- struct ttm_bo_global *glob = &ttm_bo_glob;
- int ret = 0;
- unsigned i;
-
- mutex_lock(&ttm_global_mutex);
- if (++ttm_bo_glob_use_count > 1)
- goto out;
-
- ret = ttm_mem_global_init(&ttm_mem_glob);
- if (ret)
- goto out;
-
- spin_lock_init(&glob->lru_lock);
- glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32);
-
- if (unlikely(glob->dummy_read_page == NULL)) {
- ret = -ENOMEM;
- goto out;
- }
-
- for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i)
- INIT_LIST_HEAD(&glob->swap_lru[i]);
- INIT_LIST_HEAD(&glob->device_list);
- atomic_set(&glob->bo_count, 0);
-
- ret = kobject_init_and_add(
- &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects");
- if (unlikely(ret != 0))
- kobject_put(&glob->kobj);
-out:
- mutex_unlock(&ttm_global_mutex);
- return ret;
-}
-
-int ttm_bo_device_release(struct ttm_bo_device *bdev)
-{
- struct ttm_bo_global *glob = &ttm_bo_glob;
- int ret = 0;
- unsigned i;
- struct ttm_resource_manager *man;
-
- man = ttm_manager_type(bdev, TTM_PL_SYSTEM);
- ttm_resource_manager_set_used(man, false);
- ttm_set_driver_manager(bdev, TTM_PL_SYSTEM, NULL);
-
- mutex_lock(&ttm_global_mutex);
- list_del(&bdev->device_list);
- mutex_unlock(&ttm_global_mutex);
-
- cancel_delayed_work_sync(&bdev->wq);
-
- if (ttm_bo_delayed_delete(bdev, true))
- pr_debug("Delayed destroy list was clean\n");
-
- spin_lock(&glob->lru_lock);
- for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i)
- if (list_empty(&man->lru[0]))
- pr_debug("Swap list %d was clean\n", i);
- spin_unlock(&glob->lru_lock);
-
- ttm_pool_fini(&bdev->pool);
-
- if (!ret)
- ttm_bo_global_release();
-
- return ret;
-}
-EXPORT_SYMBOL(ttm_bo_device_release);
-
-static void ttm_bo_init_sysman(struct ttm_bo_device *bdev)
-{
- struct ttm_resource_manager *man = &bdev->sysman;
-
- /*
- * Initialize the system memory buffer type.
- * Other types need to be driver / IOCTL initialized.
- */
- man->use_tt = true;
-
- ttm_resource_manager_init(man, 0);
- ttm_set_driver_manager(bdev, TTM_PL_SYSTEM, man);
- ttm_resource_manager_set_used(man, true);
-}
-
-int ttm_bo_device_init(struct ttm_bo_device *bdev,
- struct ttm_bo_driver *driver,
- struct device *dev,
- struct address_space *mapping,
- struct drm_vma_offset_manager *vma_manager,
- bool use_dma_alloc, bool use_dma32)
-{
- struct ttm_bo_global *glob = &ttm_bo_glob;
- int ret;
-
- if (WARN_ON(vma_manager == NULL))
- return -EINVAL;
-
- ret = ttm_bo_global_init();
- if (ret)
- return ret;
-
- bdev->driver = driver;
-
- ttm_bo_init_sysman(bdev);
- ttm_pool_init(&bdev->pool, dev, use_dma_alloc, use_dma32);
-
- bdev->vma_manager = vma_manager;
- INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue);
- INIT_LIST_HEAD(&bdev->ddestroy);
- bdev->dev_mapping = mapping;
- mutex_lock(&ttm_global_mutex);
- list_add_tail(&bdev->device_list, &glob->device_list);
- mutex_unlock(&ttm_global_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL(ttm_bo_device_init);
-
/*
* buffer object vm functions.
*/
void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_device *bdev = bo->bdev;
drm_vma_node_unmap(&bo->base.vma_node, bdev->dev_mapping);
ttm_mem_io_free(bdev, &bo->mem);
}
EXPORT_SYMBOL(ttm_bo_wait);
-/*
- * A buffer object shrink method that tries to swap out the first
- * buffer object on the bo_global::swap_lru list.
- */
-int ttm_bo_swapout(struct ttm_operation_ctx *ctx)
+int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
+ gfp_t gfp_flags)
{
- struct ttm_bo_global *glob = &ttm_bo_glob;
- struct ttm_buffer_object *bo;
- int ret = -EBUSY;
bool locked;
- unsigned i;
-
- spin_lock(&glob->lru_lock);
- for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) {
- list_for_each_entry(bo, &glob->swap_lru[i], swap) {
- if (!ttm_bo_evict_swapout_allowable(bo, ctx, &locked,
- NULL))
- continue;
-
- if (!ttm_bo_get_unless_zero(bo)) {
- if (locked)
- dma_resv_unlock(bo->base.resv);
- continue;
- }
+ int ret;
- ret = 0;
- break;
- }
- if (!ret)
- break;
- }
+ if (!ttm_bo_evict_swapout_allowable(bo, ctx, &locked, NULL))
+ return -EBUSY;
- if (ret) {
- spin_unlock(&glob->lru_lock);
- return ret;
+ if (!bo->ttm || !ttm_tt_is_populated(bo->ttm) ||
+ bo->ttm->page_flags & TTM_PAGE_FLAG_SG ||
+ bo->ttm->page_flags & TTM_PAGE_FLAG_SWAPPED ||
+ !ttm_bo_get_unless_zero(bo)) {
+ if (locked)
+ dma_resv_unlock(bo->base.resv);
+ return -EBUSY;
}
if (bo->deleted) {
- ret = ttm_bo_cleanup_refs(bo, false, false, locked);
+ ttm_bo_cleanup_refs(bo, false, false, locked);
ttm_bo_put(bo);
- return ret;
+ return 0;
}
ttm_bo_del_from_lru(bo);
- spin_unlock(&glob->lru_lock);
+ /* TODO: Cleanup the locking */
+ spin_unlock(&bo->bdev->lru_lock);
- /**
+ /*
* Move to system cached
*/
-
if (bo->mem.mem_type != TTM_PL_SYSTEM) {
struct ttm_operation_ctx ctx = { false, false };
struct ttm_resource evict_mem;
}
}
- /**
+ /*
* Make sure BO is idle.
*/
-
ret = ttm_bo_wait(bo, false, false);
if (unlikely(ret != 0))
goto out;
ttm_bo_unmap_virtual(bo);
- /**
+ /*
* Swap out. Buffer will be swapped in again as soon as
* anyone tries to access a ttm page.
*/
+ if (bo->bdev->funcs->swap_notify)
+ bo->bdev->funcs->swap_notify(bo);
- if (bo->bdev->driver->swap_notify)
- bo->bdev->driver->swap_notify(bo);
-
- ret = ttm_tt_swapout(bo->bdev, bo->ttm);
+ ret = ttm_tt_swapout(bo->bdev, bo->ttm, gfp_flags);
out:
- /**
- *
+ /*
* Unreserve without putting on LRU to avoid swapping out an
* already swapped buffer.
*/
ttm_bo_put(bo);
return ret;
}
-EXPORT_SYMBOL(ttm_bo_swapout);
void ttm_bo_tt_destroy(struct ttm_buffer_object *bo)
{
ttm_tt_destroy(bo->bdev, bo->ttm);
bo->ttm = NULL;
}
-
projects / linux-2.6-microblaze.git / blobdiff