LXR linux/include/linux/swap

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __LINUX_SWAP_CGROUP_H
   3#define __LINUX_SWAP_CGROUP_H
   4
   5#include <linux/swap.h>
   6
   7#ifdef CONFIG_MEMCG_SWAP
   8
   9extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent,
  10                                        unsigned short old, unsigned short new);
  11extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id,
  12                                         unsigned int nr_ents);
  13extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent);
  14extern int swap_cgroup_swapon(int type, unsigned long max_pages);
  15extern void swap_cgroup_swapoff(int type);
  16
  17#else
  18
  19static inline
  20unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id,
  21                                  unsigned int nr_ents)
  22{
  23        return 0;
  24}
  25
  26static inline
  27unsigned short lookup_swap_cgroup_id(swp_entry_t ent)
  28{
  29        return 0;
  30}
  31
  32static inline int
  33swap_cgroup_swapon(int type, unsigned long max_pages)
  34{
  35        return 0;
  36}
  37
  38static inline void swap_cgroup_swapoff(int type)
  39{
  40        return;
  41}
  42
  43#endif /* CONFIG_MEMCG_SWAP */
  44
  45#endif /* __LINUX_SWAP_CGROUP_H */
  46