| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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 | |
| 9 | extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent, |
| 10 | unsigned short old, unsigned short new); |
| 11 | extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id, |
| 12 | unsigned int nr_ents); |
| 13 | extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent); |
| 14 | extern int swap_cgroup_swapon(int type, unsigned long max_pages); |
| 15 | extern void swap_cgroup_swapoff(int type); |
| 16 | |
| 17 | #else |
| 18 | |
| 19 | static inline |
| 20 | unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id, |
| 21 | unsigned int nr_ents) |
| 22 | { |
| 23 | return 0; |
| 24 | } |
| 25 | |
| 26 | static inline |
| 27 | unsigned short lookup_swap_cgroup_id(swp_entry_t ent) |
| 28 | { |
| 29 | return 0; |
| 30 | } |
| 31 | |
| 32 | static inline int |
| 33 | swap_cgroup_swapon(int type, unsigned long max_pages) |
| 34 | { |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | static inline void swap_cgroup_swapoff(int type) |
| 39 | { |
| 40 | return; |
| 41 | } |
| 42 | |
| 43 | #endif /* CONFIG_MEMCG_SWAP */ |
| 44 | |
| 45 | #endif /* __LINUX_SWAP_CGROUP_H */ |