memcontrol.h 2.0 KB

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  1. /* memcontrol.h - Memory Controller
  2. *
  3. * Copyright IBM Corporation, 2007
  4. * Author Balbir Singh <balbir@linux.vnet.ibm.com>
  5. *
  6. * Copyright 2007 OpenVZ SWsoft Inc
  7. * Author: Pavel Emelianov <xemul@openvz.org>
  8. *
  9. * This program is free software; you can redistribute it and/or modify
  10. * it under the terms of the GNU General Public License as published by
  11. * the Free Software Foundation; either version 2 of the License, or
  12. * (at your option) any later version.
  13. *
  14. * This program is distributed in the hope that it will be useful,
  15. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17. * GNU General Public License for more details.
  18. */
  19. #ifndef _LINUX_MEMCONTROL_H
  20. #define _LINUX_MEMCONTROL_H
  21. struct mem_cgroup;
  22. struct page_cgroup;
  23. #ifdef CONFIG_CGROUP_MEM_CONT
  24. extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p);
  25. extern void mm_free_cgroup(struct mm_struct *mm);
  26. extern void page_assign_page_cgroup(struct page *page,
  27. struct page_cgroup *pc);
  28. extern struct page_cgroup *page_get_page_cgroup(struct page *page);
  29. extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm);
  30. extern void mem_cgroup_uncharge(struct page_cgroup *pc);
  31. static inline void mem_cgroup_uncharge_page(struct page *page)
  32. {
  33. mem_cgroup_uncharge(page_get_page_cgroup(page));
  34. }
  35. #else /* CONFIG_CGROUP_MEM_CONT */
  36. static inline void mm_init_cgroup(struct mm_struct *mm,
  37. struct task_struct *p)
  38. {
  39. }
  40. static inline void mm_free_cgroup(struct mm_struct *mm)
  41. {
  42. }
  43. static inline void page_assign_page_cgroup(struct page *page,
  44. struct page_cgroup *pc)
  45. {
  46. }
  47. static inline struct page_cgroup *page_get_page_cgroup(struct page *page)
  48. {
  49. return NULL;
  50. }
  51. static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm)
  52. {
  53. return 0;
  54. }
  55. static inline void mem_cgroup_uncharge(struct page_cgroup *pc)
  56. {
  57. }
  58. static inline void mem_cgroup_uncharge_page(struct page *page)
  59. {
  60. }
  61. #endif /* CONFIG_CGROUP_MEM_CONT */
  62. #endif /* _LINUX_MEMCONTROL_H */