parman.h 2.9 KB

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  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. #ifndef _PARMAN_H
  35. #define _PARMAN_H
  36. #include <linux/list.h>
  37. enum parman_algo_type {
  38. PARMAN_ALGO_TYPE_LSORT,
  39. };
  40. struct parman_item {
  41. struct list_head list;
  42. unsigned long index;
  43. };
  44. struct parman_prio {
  45. struct list_head list;
  46. struct list_head item_list;
  47. unsigned long priority;
  48. };
  49. struct parman_ops {
  50. unsigned long base_count;
  51. unsigned long resize_step;
  52. int (*resize)(void *priv, unsigned long new_count);
  53. void (*move)(void *priv, unsigned long from_index,
  54. unsigned long to_index, unsigned long count);
  55. enum parman_algo_type algo;
  56. };
  57. struct parman;
  58. struct parman *parman_create(const struct parman_ops *ops, void *priv);
  59. void parman_destroy(struct parman *parman);
  60. void parman_prio_init(struct parman *parman, struct parman_prio *prio,
  61. unsigned long priority);
  62. void parman_prio_fini(struct parman_prio *prio);
  63. int parman_item_add(struct parman *parman, struct parman_prio *prio,
  64. struct parman_item *item);
  65. void parman_item_remove(struct parman *parman, struct parman_prio *prio,
  66. struct parman_item *item);
  67. #endif