| Jiri Pirko | 44091d2 | 2017-02-03 10:29:06 +0100 | [diff] [blame] | 1 | /* |
| 2 | * include/linux/parman.h - Manager for linear priority array areas |
| 3 | * Copyright (c) 2017 Mellanox Technologies. All rights reserved. |
| 4 | * Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com> |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are met: |
| 8 | * |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. Neither the names of the copyright holders nor the names of its |
| 15 | * contributors may be used to endorse or promote products derived from |
| 16 | * this software without specific prior written permission. |
| 17 | * |
| 18 | * Alternatively, this software may be distributed under the terms of the |
| 19 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 20 | * Software Foundation. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 26 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 30 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 32 | * POSSIBILITY OF SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #ifndef _PARMAN_H |
| 36 | #define _PARMAN_H |
| 37 | |
| 38 | #include <linux/list.h> |
| 39 | |
| 40 | enum parman_algo_type { |
| 41 | PARMAN_ALGO_TYPE_LSORT, |
| 42 | }; |
| 43 | |
| 44 | struct parman_item { |
| 45 | struct list_head list; |
| 46 | unsigned long index; |
| 47 | }; |
| 48 | |
| 49 | struct parman_prio { |
| 50 | struct list_head list; |
| 51 | struct list_head item_list; |
| 52 | unsigned long priority; |
| 53 | }; |
| 54 | |
| 55 | struct parman_ops { |
| 56 | unsigned long base_count; |
| 57 | unsigned long resize_step; |
| 58 | int (*resize)(void *priv, unsigned long new_count); |
| 59 | void (*move)(void *priv, unsigned long from_index, |
| 60 | unsigned long to_index, unsigned long count); |
| 61 | enum parman_algo_type algo; |
| 62 | }; |
| 63 | |
| 64 | struct parman; |
| 65 | |
| 66 | struct parman *parman_create(const struct parman_ops *ops, void *priv); |
| 67 | void parman_destroy(struct parman *parman); |
| 68 | void parman_prio_init(struct parman *parman, struct parman_prio *prio, |
| 69 | unsigned long priority); |
| 70 | void parman_prio_fini(struct parman_prio *prio); |
| 71 | int parman_item_add(struct parman *parman, struct parman_prio *prio, |
| 72 | struct parman_item *item); |
| 73 | void parman_item_remove(struct parman *parman, struct parman_prio *prio, |
| 74 | struct parman_item *item); |
| 75 | |
| 76 | #endif |