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Diffstat (limited to 'include/linux/parman.h')
| -rw-r--r-- | include/linux/parman.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/include/linux/parman.h b/include/linux/parman.h new file mode 100644 index 000000000000..3c8cccc7d4da --- /dev/null +++ b/include/linux/parman.h @@ -0,0 +1,76 @@ +/* + * include/linux/parman.h - Manager for linear priority array areas + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. + * Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _PARMAN_H +#define _PARMAN_H + +#include <linux/list.h> + +enum parman_algo_type { + PARMAN_ALGO_TYPE_LSORT, +}; + +struct parman_item { + struct list_head list; + unsigned long index; +}; + +struct parman_prio { + struct list_head list; + struct list_head item_list; + unsigned long priority; +}; + +struct parman_ops { + unsigned long base_count; + unsigned long resize_step; + int (*resize)(void *priv, unsigned long new_count); + void (*move)(void *priv, unsigned long from_index, + unsigned long to_index, unsigned long count); + enum parman_algo_type algo; +}; + +struct parman; + +struct parman *parman_create(const struct parman_ops *ops, void *priv); +void parman_destroy(struct parman *parman); +void parman_prio_init(struct parman *parman, struct parman_prio *prio, + unsigned long priority); +void parman_prio_fini(struct parman_prio *prio); +int parman_item_add(struct parman *parman, struct parman_prio *prio, + struct parman_item *item); +void parman_item_remove(struct parman *parman, struct parman_prio *prio, + struct parman_item *item); + +#endif |