diff options
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 42 |
1 files changed, 36 insertions, 6 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index 0e67cf41065d..941e5ffd1c72 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -32,6 +32,8 @@ #include <drm/drmP.h> #include "vmwgfx_resource_priv.h" +#define VMW_RES_EVICT_ERR_COUNT 10 + struct vmw_user_dma_buffer { struct ttm_base_object base; struct vmw_dma_buffer dma; @@ -1091,8 +1093,9 @@ vmw_resource_backoff_reservation(struct ww_acquire_ctx *ticket, * to a backup buffer. * * @res: The resource to evict. + * @interruptible: Whether to wait interruptible. */ -int vmw_resource_do_evict(struct vmw_resource *res) +int vmw_resource_do_evict(struct vmw_resource *res, bool interruptible) { struct ttm_validate_buffer val_buf; const struct vmw_res_func *func = res->func; @@ -1102,7 +1105,8 @@ int vmw_resource_do_evict(struct vmw_resource *res) BUG_ON(!func->may_evict); val_buf.bo = NULL; - ret = vmw_resource_check_buffer(res, &ticket, true, &val_buf); + ret = vmw_resource_check_buffer(res, &ticket, interruptible, + &val_buf); if (unlikely(ret != 0)) return ret; @@ -1141,6 +1145,7 @@ int vmw_resource_validate(struct vmw_resource *res) struct vmw_private *dev_priv = res->dev_priv; struct list_head *lru_list = &dev_priv->res_lru[res->func->res_type]; struct ttm_validate_buffer val_buf; + unsigned err_count = 0; if (likely(!res->func->may_evict)) return 0; @@ -1155,7 +1160,7 @@ int vmw_resource_validate(struct vmw_resource *res) write_lock(&dev_priv->resource_lock); if (list_empty(lru_list) || !res->func->may_evict) { - DRM_ERROR("Out of device device id entries " + DRM_ERROR("Out of device device resources " "for %s.\n", res->func->type_name); ret = -EBUSY; write_unlock(&dev_priv->resource_lock); @@ -1168,7 +1173,19 @@ int vmw_resource_validate(struct vmw_resource *res) list_del_init(&evict_res->lru_head); write_unlock(&dev_priv->resource_lock); - vmw_resource_do_evict(evict_res); + + ret = vmw_resource_do_evict(evict_res, true); + if (unlikely(ret != 0)) { + write_lock(&dev_priv->resource_lock); + list_add_tail(&evict_res->lru_head, lru_list); + write_unlock(&dev_priv->resource_lock); + if (ret == -ERESTARTSYS || + ++err_count > VMW_RES_EVICT_ERR_COUNT) { + vmw_resource_unreference(&evict_res); + goto out_no_validate; + } + } + vmw_resource_unreference(&evict_res); } while (1); @@ -1253,13 +1270,15 @@ bool vmw_resource_needs_backup(const struct vmw_resource *res) * @type: The resource type to evict * * To avoid thrashing starvation or as part of the hibernation sequence, - * evict all evictable resources of a specific type. + * try to evict all evictable resources of a specific type. */ static void vmw_resource_evict_type(struct vmw_private *dev_priv, enum vmw_res_type type) { struct list_head *lru_list = &dev_priv->res_lru[type]; struct vmw_resource *evict_res; + unsigned err_count = 0; + int ret; do { write_lock(&dev_priv->resource_lock); @@ -1272,7 +1291,18 @@ static void vmw_resource_evict_type(struct vmw_private *dev_priv, lru_head)); list_del_init(&evict_res->lru_head); write_unlock(&dev_priv->resource_lock); - vmw_resource_do_evict(evict_res); + + ret = vmw_resource_do_evict(evict_res, false); + if (unlikely(ret != 0)) { + write_lock(&dev_priv->resource_lock); + list_add_tail(&evict_res->lru_head, lru_list); + write_unlock(&dev_priv->resource_lock); + if (++err_count > VMW_RES_EVICT_ERR_COUNT) { + vmw_resource_unreference(&evict_res); + return; + } + } + vmw_resource_unreference(&evict_res); } while (1); |