hugetlb_cgroup.h | Explore in Territory

/*
 * Copyright IBM Corporation, 2012
 * Author Aneesh Kumar K.V <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2.1 of the GNU Lesser General Public License
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 */

#ifndef _LINUX_HUGETLB_CGROUP_H
#define _LINUX_HUGETLB_CGROUP_H

#include <linux/mmdebug.h>

struct hugetlb_cgroup;
struct resv_map;
struct file_region;

#ifdef CONFIG_CGROUP_HUGETLB
enum hugetlb_memory_event { … };

struct hugetlb_cgroup_per_node { … };

struct hugetlb_cgroup { … };

static inline struct hugetlb_cgroup *
__hugetlb_cgroup_from_folio(struct folio *folio, bool rsvd)
{ … }

static inline struct hugetlb_cgroup *hugetlb_cgroup_from_folio(struct folio *folio)
{ … }

static inline struct hugetlb_cgroup *
hugetlb_cgroup_from_folio_rsvd(struct folio *folio)
{ … }

static inline void __set_hugetlb_cgroup(struct folio *folio,
				       struct hugetlb_cgroup *h_cg, bool rsvd)
{ … }

static inline void set_hugetlb_cgroup(struct folio *folio,
				     struct hugetlb_cgroup *h_cg)
{ … }

static inline void set_hugetlb_cgroup_rsvd(struct folio *folio,
					  struct hugetlb_cgroup *h_cg)
{ … }

static inline bool hugetlb_cgroup_disabled(void)
{ … }

static inline void hugetlb_cgroup_put_rsvd_cgroup(struct hugetlb_cgroup *h_cg)
{ … }

static inline void resv_map_dup_hugetlb_cgroup_uncharge_info(
						struct resv_map *resv_map)
{ … }

static inline void resv_map_put_hugetlb_cgroup_uncharge_info(
						struct resv_map *resv_map)
{ … }

extern int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
					struct hugetlb_cgroup **ptr);
extern int hugetlb_cgroup_charge_cgroup_rsvd(int idx, unsigned long nr_pages,
					     struct hugetlb_cgroup **ptr);
extern void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
					 struct hugetlb_cgroup *h_cg,
					 struct folio *folio);
extern void hugetlb_cgroup_commit_charge_rsvd(int idx, unsigned long nr_pages,
					      struct hugetlb_cgroup *h_cg,
					      struct folio *folio);
extern void hugetlb_cgroup_uncharge_folio(int idx, unsigned long nr_pages,
					 struct folio *folio);
extern void hugetlb_cgroup_uncharge_folio_rsvd(int idx, unsigned long nr_pages,
					      struct folio *folio);

extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
					   struct hugetlb_cgroup *h_cg);
extern void hugetlb_cgroup_uncharge_cgroup_rsvd(int idx, unsigned long nr_pages,
						struct hugetlb_cgroup *h_cg);
extern void hugetlb_cgroup_uncharge_counter(struct resv_map *resv,
					    unsigned long start,
					    unsigned long end);

extern void hugetlb_cgroup_uncharge_file_region(struct resv_map *resv,
						struct file_region *rg,
						unsigned long nr_pages,
						bool region_del);

extern void hugetlb_cgroup_file_init(void) __init;
extern void hugetlb_cgroup_migrate(struct folio *old_folio,
				   struct folio *new_folio);

#else
static inline void hugetlb_cgroup_uncharge_file_region(struct resv_map *resv,
						       struct file_region *rg,
						       unsigned long nr_pages,
						       bool region_del)
{
}

static inline struct hugetlb_cgroup *hugetlb_cgroup_from_folio(struct folio *folio)
{
	return NULL;
}

static inline struct hugetlb_cgroup *
hugetlb_cgroup_from_folio_rsvd(struct folio *folio)
{
	return NULL;
}

static inline void set_hugetlb_cgroup(struct folio *folio,
				     struct hugetlb_cgroup *h_cg)
{
}

static inline void set_hugetlb_cgroup_rsvd(struct folio *folio,
					  struct hugetlb_cgroup *h_cg)
{
}

static inline bool hugetlb_cgroup_disabled(void)
{
	return true;
}

static inline void hugetlb_cgroup_put_rsvd_cgroup(struct hugetlb_cgroup *h_cg)
{
}

static inline void resv_map_dup_hugetlb_cgroup_uncharge_info(
						struct resv_map *resv_map)
{
}

static inline void resv_map_put_hugetlb_cgroup_uncharge_info(
						struct resv_map *resv_map)
{
}

static inline int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
					       struct hugetlb_cgroup **ptr)
{
	return 0;
}

static inline int hugetlb_cgroup_charge_cgroup_rsvd(int idx,
						    unsigned long nr_pages,
						    struct hugetlb_cgroup **ptr)
{
	return 0;
}

static inline void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
						struct hugetlb_cgroup *h_cg,
						struct folio *folio)
{
}

static inline void
hugetlb_cgroup_commit_charge_rsvd(int idx, unsigned long nr_pages,
				  struct hugetlb_cgroup *h_cg,
				  struct folio *folio)
{
}

static inline void hugetlb_cgroup_uncharge_folio(int idx, unsigned long nr_pages,
						struct folio *folio)
{
}

static inline void hugetlb_cgroup_uncharge_folio_rsvd(int idx,
						     unsigned long nr_pages,
						     struct folio *folio)
{
}
static inline void hugetlb_cgroup_uncharge_cgroup(int idx,
						  unsigned long nr_pages,
						  struct hugetlb_cgroup *h_cg)
{
}

static inline void
hugetlb_cgroup_uncharge_cgroup_rsvd(int idx, unsigned long nr_pages,
				    struct hugetlb_cgroup *h_cg)
{
}

static inline void hugetlb_cgroup_uncharge_counter(struct resv_map *resv,
						   unsigned long start,
						   unsigned long end)
{
}

static inline void hugetlb_cgroup_file_init(void)
{
}

static inline void hugetlb_cgroup_migrate(struct folio *old_folio,
					  struct folio *new_folio)
{
}

#endif  /* CONFIG_MEM_RES_CTLR_HUGETLB */
#endif
linux/include/linux/hugetlb_cgroup.h
