1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
/*
* 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
#include <linux/mmdebug.h>
struct hugetlb_cgroup;
struct resv_map;
struct file_region;
#ifdef CONFIG_CGROUP_HUGETLB
/*
* Minimum page order trackable by hugetlb cgroup.
* At least 3 pages are necessary for all the tracking information.
* The second tail page contains all of the hugetlb-specific fields.
*/
#define HUGETLB_CGROUP_MIN_ORDER order_base_2(__NR_USED_SUBPAGE)
enum hugetlb_memory_event {
HUGETLB_MAX,
HUGETLB_NR_MEMORY_EVENTS,
};
struct hugetlb_cgroup_per_node {
/* hugetlb usage in pages over all hstates. */
unsigned long usage[HUGE_MAX_HSTATE];
};
struct hugetlb_cgroup {
struct cgroup_subsys_state css;
/*
* the counter to account for hugepages from hugetlb.
*/
struct page_counter hugepage[HUGE_MAX_HSTATE];
/*
* the counter to account for hugepage reservations from hugetlb.
*/
struct page_counter rsvd_hugepage[HUGE_MAX_HSTATE];
atomic_long_t events[HUGE_MAX_HSTATE][HUGETLB_NR_MEMORY_EVENTS];
atomic_long_t events_local[HUGE_MAX_HSTATE][HUGETLB_NR_MEMORY_EVENTS];
/* Handle for "hugetlb.events" */
struct cgroup_file events_file[HUGE_MAX_HSTATE];
/* Handle for "hugetlb.events.local" */
struct cgroup_file events_local_file[HUGE_MAX_HSTATE];
struct hugetlb_cgroup_per_node *nodeinfo[];
};
static inline struct hugetlb_cgroup *
__hugetlb_cgroup_from_folio(struct folio *folio, bool rsvd)
{
VM_BUG_ON_FOLIO(!folio_test_hugetlb(folio), folio);
if (folio_order(folio) < HUGETLB_CGROUP_MIN_ORDER)
return NULL;
if (rsvd)
return folio->_hugetlb_cgroup_rsvd;
else
return folio->_hugetlb_cgroup;
}
static inline struct hugetlb_cgroup *hugetlb_cgroup_from_folio(struct folio *folio)
{
return __hugetlb_cgroup_from_folio(folio, false);
}
static inline struct hugetlb_cgroup *
hugetlb_cgroup_from_folio_rsvd(struct folio *folio)
{
return __hugetlb_cgroup_from_folio(folio, true);
}
static inline void __set_hugetlb_cgroup(struct folio *folio,
struct hugetlb_cgroup *h_cg, bool rsvd)
{
VM_BUG_ON_FOLIO(!folio_test_hugetlb(folio), folio);
if (folio_order(folio) < HUGETLB_CGROUP_MIN_ORDER)
return;
if (rsvd)
folio->_hugetlb_cgroup_rsvd = h_cg;
else
folio->_hugetlb_cgroup = h_cg;
}
static inline void set_hugetlb_cgroup(struct folio *folio,
struct hugetlb_cgroup *h_cg)
{
__set_hugetlb_cgroup(folio, h_cg, false);
}
static inline void set_hugetlb_cgroup_rsvd(struct folio *folio,
struct hugetlb_cgroup *h_cg)
{
__set_hugetlb_cgroup(folio, h_cg, true);
}
static inline bool hugetlb_cgroup_disabled(void)
{
return !cgroup_subsys_enabled(hugetlb_cgrp_subsys);
}
static inline void hugetlb_cgroup_put_rsvd_cgroup(struct hugetlb_cgroup *h_cg)
{
css_put(&h_cg->css);
}
static inline void resv_map_dup_hugetlb_cgroup_uncharge_info(
struct resv_map *resv_map)
{
if (resv_map->css)
css_get(resv_map->css);
}
static inline void resv_map_put_hugetlb_cgroup_uncharge_info(
struct resv_map *resv_map)
{
if (resv_map->css)
css_put(resv_map->css);
}
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
|
