| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| /* |
| * |
| * (C) COPYRIGHT 2019-2021 ARM Limited. All rights reserved. |
| * |
| * This program is free software and is provided to you under the terms of the |
| * GNU General Public License version 2 as published by the Free Software |
| * Foundation, and any use by you of this program is subject to the terms |
| * of such GNU license. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, you can access it online at |
| * http://www.gnu.org/licenses/gpl-2.0.html. |
| * |
| */ |
| |
| #ifndef _KBASE_MEM_POOL_GROUP_H_ |
| #define _KBASE_MEM_POOL_GROUP_H_ |
| |
| #include <mali_kbase_defs.h> |
| |
| /** |
| * kbase_mem_pool_group_config_init - Set the initial configuration for a |
| * set of memory pools |
| * |
| * This function sets the initial configuration for every memory pool so that |
| * the maximum amount of free memory that each pool can hold is identical. |
| * The equivalent number of 2 MiB pages is calculated automatically for the |
| * purpose of configuring the large page pools. |
| * |
| * @configs: Initial configuration for the set of memory pools |
| * @max_size: Maximum number of free 4 KiB pages each pool can hold |
| */ |
| void kbase_mem_pool_group_config_set_max_size( |
| struct kbase_mem_pool_group_config *configs, size_t max_size); |
| |
| /** |
| * kbase_mem_pool_group_init - Initialize a set of memory pools |
| * |
| * Initializes a complete set of physical memory pools. Memory pools are used to |
| * allow efficient reallocation of previously-freed physical pages. A pair of |
| * memory pools is initialized for each physical memory group: one for 4 KiB |
| * pages and one for 2 MiB pages. |
| * |
| * If @next_pools is not NULL then a request to allocate memory from an |
| * empty pool in @mem_pools will attempt to allocate from the equivalent pool |
| * in @next_pools before going to the memory group manager. Similarly |
| * pages can spill over to the equivalent pool in @next_pools when a pool |
| * is full in @mem_pools. Pages are zeroed before they spill over to another |
| * pool, to prevent leaking information between applications. |
| * |
| * @mem_pools: Set of memory pools to initialize |
| * @kbdev: Kbase device where memory is used |
| * @configs: Initial configuration for the set of memory pools |
| * @next_pools: Set of memory pools from which to allocate memory if there |
| * is no free memory in one of the @mem_pools |
| * |
| * Return: 0 on success, otherwise a negative error code |
| */ |
| int kbase_mem_pool_group_init(struct kbase_mem_pool_group *mem_pools, |
| struct kbase_device *kbdev, |
| const struct kbase_mem_pool_group_config *configs, |
| struct kbase_mem_pool_group *next_pools); |
| |
| /** |
| * kbase_mem_pool_group_term - Mark a set of memory pools as dying |
| * |
| * Marks a complete set of physical memory pools previously initialized by |
| * @kbase_mem_pool_group_init as dying. This will cause any ongoing allocation |
| * operations (eg growing on page fault) to be terminated. |
| * |
| * @mem_pools: Set of memory pools to mark |
| */ |
| void kbase_mem_pool_group_mark_dying(struct kbase_mem_pool_group *mem_pools); |
| |
| /** |
| * kbase_mem_pool_group_term - Terminate a set of memory pools |
| * |
| * Terminates a complete set of physical memory pools previously initialized by |
| * @kbase_mem_pool_group_init. |
| * |
| * @mem_pools: Set of memory pools to terminate |
| */ |
| void kbase_mem_pool_group_term(struct kbase_mem_pool_group *mem_pools); |
| |
| #endif /* _KBASE_MEM_POOL_GROUP_H_ */ |