Blame view
include/linux/hugetlb_cgroup.h
2.93 KB
2bc64a204
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 |
/* * Copyright IBM Corporation, 2012 * Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> * * 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 |
309381fea
|
17 |
#include <linux/mmdebug.h> |
2bc64a204
|
18 19 |
struct hugetlb_cgroup; |
9dd540e23
|
20 21 22 23 24 |
/* * Minimum page order trackable by hugetlb cgroup. * At least 3 pages are necessary for all the tracking information. */ #define HUGETLB_CGROUP_MIN_ORDER 2 |
2bc64a204
|
25 26 |
#ifdef CONFIG_CGROUP_HUGETLB |
9dd540e23
|
27 28 29 |
static inline struct hugetlb_cgroup *hugetlb_cgroup_from_page(struct page *page) { |
309381fea
|
30 |
VM_BUG_ON_PAGE(!PageHuge(page), page); |
9dd540e23
|
31 32 33 |
if (compound_order(page) < HUGETLB_CGROUP_MIN_ORDER) return NULL; |
1d798ca3f
|
34 |
return (struct hugetlb_cgroup *)page[2].private; |
9dd540e23
|
35 36 37 38 39 |
} static inline int set_hugetlb_cgroup(struct page *page, struct hugetlb_cgroup *h_cg) { |
309381fea
|
40 |
VM_BUG_ON_PAGE(!PageHuge(page), page); |
9dd540e23
|
41 42 43 |
if (compound_order(page) < HUGETLB_CGROUP_MIN_ORDER) return -1; |
1d798ca3f
|
44 |
page[2].private = (unsigned long)h_cg; |
9dd540e23
|
45 46 |
return 0; } |
2bc64a204
|
47 48 |
static inline bool hugetlb_cgroup_disabled(void) { |
fc5ed1e95
|
49 |
return !cgroup_subsys_enabled(hugetlb_cgrp_subsys); |
2bc64a204
|
50 |
} |
6d76dcf40
|
51 52 53 54 55 56 57 58 59 |
extern int hugetlb_cgroup_charge_cgroup(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 page *page); extern void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, struct page *page); extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages, struct hugetlb_cgroup *h_cg); |
7179e7bf4
|
60 |
extern void hugetlb_cgroup_file_init(void) __init; |
8e6ac7fab
|
61 62 |
extern void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage); |
6d76dcf40
|
63 |
|
2bc64a204
|
64 |
#else |
9dd540e23
|
65 66 67 68 69 70 71 72 73 74 |
static inline struct hugetlb_cgroup *hugetlb_cgroup_from_page(struct page *page) { return NULL; } static inline int set_hugetlb_cgroup(struct page *page, struct hugetlb_cgroup *h_cg) { return 0; } |
2bc64a204
|
75 76 77 78 |
static inline bool hugetlb_cgroup_disabled(void) { return true; } |
6d76dcf40
|
79 80 81 82 83 84 85 86 87 88 89 90 |
static inline int hugetlb_cgroup_charge_cgroup(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 page *page) { |
6d76dcf40
|
91 92 93 94 95 |
} static inline void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, struct page *page) { |
6d76dcf40
|
96 97 98 99 100 101 |
} static inline void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages, struct hugetlb_cgroup *h_cg) { |
6d76dcf40
|
102 |
} |
7179e7bf4
|
103 |
static inline void hugetlb_cgroup_file_init(void) |
abb8206cb
|
104 |
{ |
abb8206cb
|
105 |
} |
8e6ac7fab
|
106 107 108 |
static inline void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage) { |
8e6ac7fab
|
109 |
} |
2bc64a204
|
110 111 |
#endif /* CONFIG_MEM_RES_CTLR_HUGETLB */ #endif |