swap_cgroup.h (971B)
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 */