Cregit: swap_cgroup.h

Contributors: 8
Author	Tokens	Token Proportion	Commits	Commit Proportion
Kamezawa Hiroyuki	113	76.35%	3	30.00%
Daisuke Nishimura	17	11.49%	1	10.00%
Huang Ying	8	5.41%	1	10.00%
Johannes Weiner	3	2.03%	1	10.00%
Andrew Morton	2	1.35%	1	10.00%
Bob Liu	2	1.35%	1	10.00%
Jaswinder Singh Rajput	2	1.35%	1	10.00%
Greg Kroah-Hartman	1	0.68%	1	10.00%
Total	148		10

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_SWAP_CGROUP_H
#define __LINUX_SWAP_CGROUP_H

#include <linux/swap.h>

#ifdef CONFIG_MEMCG_SWAP

extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent,
					unsigned short old, unsigned short new);
extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id,
					 unsigned int nr_ents);
extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent);
extern int swap_cgroup_swapon(int type, unsigned long max_pages);
extern void swap_cgroup_swapoff(int type);

#else

static inline
unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id,
				  unsigned int nr_ents)
{
	return 0;
}

static inline
unsigned short lookup_swap_cgroup_id(swp_entry_t ent)
{
	return 0;
}

static inline int
swap_cgroup_swapon(int type, unsigned long max_pages)
{
	return 0;
}

static inline void swap_cgroup_swapoff(int type)
{
	return;
}

#endif /* CONFIG_MEMCG_SWAP */

#endif /* __LINUX_SWAP_CGROUP_H */