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-rw-r--r--include/linux/mm.h63
-rw-r--r--include/linux/mm_types.h144
-rw-r--r--include/linux/sched.h74
3 files changed, 145 insertions, 136 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index fbbc29a29dff..6a68d41444f8 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -50,69 +50,6 @@ extern int sysctl_legacy_va_layout;
50 * mmap() functions). 50 * mmap() functions).
51 */ 51 */
52 52
53/*
54 * This struct defines a memory VMM memory area. There is one of these
55 * per VM-area/task. A VM area is any part of the process virtual memory
56 * space that has a special rule for the page-fault handlers (ie a shared
57 * library, the executable area etc).
58 */
59struct vm_area_struct {
60 struct mm_struct * vm_mm; /* The address space we belong to. */
61 unsigned long vm_start; /* Our start address within vm_mm. */
62 unsigned long vm_end; /* The first byte after our end address
63 within vm_mm. */
64
65 /* linked list of VM areas per task, sorted by address */
66 struct vm_area_struct *vm_next;
67
68 pgprot_t vm_page_prot; /* Access permissions of this VMA. */
69 unsigned long vm_flags; /* Flags, listed below. */
70
71 struct rb_node vm_rb;
72
73 /*
74 * For areas with an address space and backing store,
75 * linkage into the address_space->i_mmap prio tree, or
76 * linkage to the list of like vmas hanging off its node, or
77 * linkage of vma in the address_space->i_mmap_nonlinear list.
78 */
79 union {
80 struct {
81 struct list_head list;
82 void *parent; /* aligns with prio_tree_node parent */
83 struct vm_area_struct *head;
84 } vm_set;
85
86 struct raw_prio_tree_node prio_tree_node;
87 } shared;
88
89 /*
90 * A file's MAP_PRIVATE vma can be in both i_mmap tree and anon_vma
91 * list, after a COW of one of the file pages. A MAP_SHARED vma
92 * can only be in the i_mmap tree. An anonymous MAP_PRIVATE, stack
93 * or brk vma (with NULL file) can only be in an anon_vma list.
94 */
95 struct list_head anon_vma_node; /* Serialized by anon_vma->lock */
96 struct anon_vma *anon_vma; /* Serialized by page_table_lock */
97
98 /* Function pointers to deal with this struct. */
99 struct vm_operations_struct * vm_ops;
100
101 /* Information about our backing store: */
102 unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE
103 units, *not* PAGE_CACHE_SIZE */
104 struct file * vm_file; /* File we map to (can be NULL). */
105 void * vm_private_data; /* was vm_pte (shared mem) */
106 unsigned long vm_truncate_count;/* truncate_count or restart_addr */
107
108#ifndef CONFIG_MMU
109 atomic_t vm_usage; /* refcount (VMAs shared if !MMU) */
110#endif
111#ifdef CONFIG_NUMA
112 struct mempolicy *vm_policy; /* NUMA policy for the VMA */
113#endif
114};
115
116extern struct kmem_cache *vm_area_cachep; 53extern struct kmem_cache *vm_area_cachep;
117 54
118/* 55/*
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index d5bb1796e12b..145b3d053048 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -1,13 +1,26 @@
1#ifndef _LINUX_MM_TYPES_H 1#ifndef _LINUX_MM_TYPES_H
2#define _LINUX_MM_TYPES_H 2#define _LINUX_MM_TYPES_H
3 3
4#include <linux/auxvec.h> /* For AT_VECTOR_SIZE */
4#include <linux/types.h> 5#include <linux/types.h>
5#include <linux/threads.h> 6#include <linux/threads.h>
6#include <linux/list.h> 7#include <linux/list.h>
7#include <linux/spinlock.h> 8#include <linux/spinlock.h>
9#include <linux/prio_tree.h>
10#include <linux/rbtree.h>
11#include <linux/rwsem.h>
12#include <linux/completion.h>
13#include <asm/page.h>
14#include <asm/mmu.h>
8 15
9struct address_space; 16struct address_space;
10 17
18#if NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS
19typedef atomic_long_t mm_counter_t;
20#else /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
21typedef unsigned long mm_counter_t;
22#endif /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
23
11/* 24/*
12 * Each physical page in the system has a struct page associated with 25 * Each physical page in the system has a struct page associated with
13 * it to keep track of whatever it is we are using the page for at the 26 * it to keep track of whatever it is we are using the page for at the
@@ -80,4 +93,135 @@ struct page {
80#endif /* WANT_PAGE_VIRTUAL */ 93#endif /* WANT_PAGE_VIRTUAL */
81}; 94};
82 95
96/*
97 * This struct defines a memory VMM memory area. There is one of these
98 * per VM-area/task. A VM area is any part of the process virtual memory
99 * space that has a special rule for the page-fault handlers (ie a shared
100 * library, the executable area etc).
101 */
102struct vm_area_struct {
103 struct mm_struct * vm_mm; /* The address space we belong to. */
104 unsigned long vm_start; /* Our start address within vm_mm. */
105 unsigned long vm_end; /* The first byte after our end address
106 within vm_mm. */
107
108 /* linked list of VM areas per task, sorted by address */
109 struct vm_area_struct *vm_next;
110
111 pgprot_t vm_page_prot; /* Access permissions of this VMA. */
112 unsigned long vm_flags; /* Flags, listed below. */
113
114 struct rb_node vm_rb;
115
116 /*
117 * For areas with an address space and backing store,
118 * linkage into the address_space->i_mmap prio tree, or
119 * linkage to the list of like vmas hanging off its node, or
120 * linkage of vma in the address_space->i_mmap_nonlinear list.
121 */
122 union {
123 struct {
124 struct list_head list;
125 void *parent; /* aligns with prio_tree_node parent */
126 struct vm_area_struct *head;
127 } vm_set;
128
129 struct raw_prio_tree_node prio_tree_node;
130 } shared;
131
132 /*
133 * A file's MAP_PRIVATE vma can be in both i_mmap tree and anon_vma
134 * list, after a COW of one of the file pages. A MAP_SHARED vma
135 * can only be in the i_mmap tree. An anonymous MAP_PRIVATE, stack
136 * or brk vma (with NULL file) can only be in an anon_vma list.
137 */
138 struct list_head anon_vma_node; /* Serialized by anon_vma->lock */
139 struct anon_vma *anon_vma; /* Serialized by page_table_lock */
140
141 /* Function pointers to deal with this struct. */
142 struct vm_operations_struct * vm_ops;
143
144 /* Information about our backing store: */
145 unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE
146 units, *not* PAGE_CACHE_SIZE */
147 struct file * vm_file; /* File we map to (can be NULL). */
148 void * vm_private_data; /* was vm_pte (shared mem) */
149 unsigned long vm_truncate_count;/* truncate_count or restart_addr */
150
151#ifndef CONFIG_MMU
152 atomic_t vm_usage; /* refcount (VMAs shared if !MMU) */
153#endif
154#ifdef CONFIG_NUMA
155 struct mempolicy *vm_policy; /* NUMA policy for the VMA */
156#endif
157};
158
159struct mm_struct {
160 struct vm_area_struct * mmap; /* list of VMAs */
161 struct rb_root mm_rb;
162 struct vm_area_struct * mmap_cache; /* last find_vma result */
163 unsigned long (*get_unmapped_area) (struct file *filp,
164 unsigned long addr, unsigned long len,
165 unsigned long pgoff, unsigned long flags);
166 void (*unmap_area) (struct mm_struct *mm, unsigned long addr);
167 unsigned long mmap_base; /* base of mmap area */
168 unsigned long task_size; /* size of task vm space */
169 unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */
170 unsigned long free_area_cache; /* first hole of size cached_hole_size or larger */
171 pgd_t * pgd;
172 atomic_t mm_users; /* How many users with user space? */
173 atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */
174 int map_count; /* number of VMAs */
175 struct rw_semaphore mmap_sem;
176 spinlock_t page_table_lock; /* Protects page tables and some counters */
177
178 struct list_head mmlist; /* List of maybe swapped mm's. These are globally strung
179 * together off init_mm.mmlist, and are protected
180 * by mmlist_lock
181 */
182
183 /* Special counters, in some configurations protected by the
184 * page_table_lock, in other configurations by being atomic.
185 */
186 mm_counter_t _file_rss;
187 mm_counter_t _anon_rss;
188
189 unsigned long hiwater_rss; /* High-watermark of RSS usage */
190 unsigned long hiwater_vm; /* High-water virtual memory usage */
191
192 unsigned long total_vm, locked_vm, shared_vm, exec_vm;
193 unsigned long stack_vm, reserved_vm, def_flags, nr_ptes;
194 unsigned long start_code, end_code, start_data, end_data;
195 unsigned long start_brk, brk, start_stack;
196 unsigned long arg_start, arg_end, env_start, env_end;
197
198 unsigned long saved_auxv[AT_VECTOR_SIZE]; /* for /proc/PID/auxv */
199
200 cpumask_t cpu_vm_mask;
201
202 /* Architecture-specific MM context */
203 mm_context_t context;
204
205 /* Swap token stuff */
206 /*
207 * Last value of global fault stamp as seen by this process.
208 * In other words, this value gives an indication of how long
209 * it has been since this task got the token.
210 * Look at mm/thrash.c
211 */
212 unsigned int faultstamp;
213 unsigned int token_priority;
214 unsigned int last_interval;
215
216 unsigned long flags; /* Must use atomic bitops to access the bits */
217
218 /* coredumping support */
219 int core_waiters;
220 struct completion *core_startup_done, core_done;
221
222 /* aio bits */
223 rwlock_t ioctx_list_lock;
224 struct kioctx *ioctx_list;
225};
226
83#endif /* _LINUX_MM_TYPES_H */ 227#endif /* _LINUX_MM_TYPES_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 228e0a8ce248..285ee4827a3c 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1,8 +1,6 @@
1#ifndef _LINUX_SCHED_H 1#ifndef _LINUX_SCHED_H
2#define _LINUX_SCHED_H 2#define _LINUX_SCHED_H
3 3
4#include <linux/auxvec.h> /* For AT_VECTOR_SIZE */
5
6/* 4/*
7 * cloning flags: 5 * cloning flags:
8 */ 6 */
@@ -58,12 +56,12 @@ struct sched_param {
58#include <linux/cpumask.h> 56#include <linux/cpumask.h>
59#include <linux/errno.h> 57#include <linux/errno.h>
60#include <linux/nodemask.h> 58#include <linux/nodemask.h>
59#include <linux/mm_types.h>
61 60
62#include <asm/system.h> 61#include <asm/system.h>
63#include <asm/semaphore.h> 62#include <asm/semaphore.h>
64#include <asm/page.h> 63#include <asm/page.h>
65#include <asm/ptrace.h> 64#include <asm/ptrace.h>
66#include <asm/mmu.h>
67#include <asm/cputime.h> 65#include <asm/cputime.h>
68 66
69#include <linux/smp.h> 67#include <linux/smp.h>
@@ -319,7 +317,6 @@ extern void arch_unmap_area_topdown(struct mm_struct *, unsigned long);
319#define add_mm_counter(mm, member, value) atomic_long_add(value, &(mm)->_##member) 317#define add_mm_counter(mm, member, value) atomic_long_add(value, &(mm)->_##member)
320#define inc_mm_counter(mm, member) atomic_long_inc(&(mm)->_##member) 318#define inc_mm_counter(mm, member) atomic_long_inc(&(mm)->_##member)
321#define dec_mm_counter(mm, member) atomic_long_dec(&(mm)->_##member) 319#define dec_mm_counter(mm, member) atomic_long_dec(&(mm)->_##member)
322typedef atomic_long_t mm_counter_t;
323 320
324#else /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */ 321#else /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
325/* 322/*
@@ -331,7 +328,6 @@ typedef atomic_long_t mm_counter_t;
331#define add_mm_counter(mm, member, value) (mm)->_##member += (value) 328#define add_mm_counter(mm, member, value) (mm)->_##member += (value)
332#define inc_mm_counter(mm, member) (mm)->_##member++ 329#define inc_mm_counter(mm, member) (mm)->_##member++
333#define dec_mm_counter(mm, member) (mm)->_##member-- 330#define dec_mm_counter(mm, member) (mm)->_##member--
334typedef unsigned long mm_counter_t;
335 331
336#endif /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */ 332#endif /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */
337 333
@@ -368,74 +364,6 @@ extern int get_dumpable(struct mm_struct *mm);
368#define MMF_DUMP_FILTER_DEFAULT \ 364#define MMF_DUMP_FILTER_DEFAULT \
369 ((1 << MMF_DUMP_ANON_PRIVATE) | (1 << MMF_DUMP_ANON_SHARED)) 365 ((1 << MMF_DUMP_ANON_PRIVATE) | (1 << MMF_DUMP_ANON_SHARED))
370 366
371struct mm_struct {
372 struct vm_area_struct * mmap; /* list of VMAs */
373 struct rb_root mm_rb;
374 struct vm_area_struct * mmap_cache; /* last find_vma result */
375 unsigned long (*get_unmapped_area) (struct file *filp,
376 unsigned long addr, unsigned long len,
377 unsigned long pgoff, unsigned long flags);
378 void (*unmap_area) (struct mm_struct *mm, unsigned long addr);
379 unsigned long mmap_base; /* base of mmap area */
380 unsigned long task_size; /* size of task vm space */
381 unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */
382 unsigned long free_area_cache; /* first hole of size cached_hole_size or larger */
383 pgd_t * pgd;
384 atomic_t mm_users; /* How many users with user space? */
385 atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */
386 int map_count; /* number of VMAs */
387 struct rw_semaphore mmap_sem;
388 spinlock_t page_table_lock; /* Protects page tables and some counters */
389
390 struct list_head mmlist; /* List of maybe swapped mm's. These are globally strung
391 * together off init_mm.mmlist, and are protected
392 * by mmlist_lock
393 */
394
395 /* Special counters, in some configurations protected by the
396 * page_table_lock, in other configurations by being atomic.
397 */
398 mm_counter_t _file_rss;
399 mm_counter_t _anon_rss;
400
401 unsigned long hiwater_rss; /* High-watermark of RSS usage */
402 unsigned long hiwater_vm; /* High-water virtual memory usage */
403
404 unsigned long total_vm, locked_vm, shared_vm, exec_vm;
405 unsigned long stack_vm, reserved_vm, def_flags, nr_ptes;
406 unsigned long start_code, end_code, start_data, end_data;
407 unsigned long start_brk, brk, start_stack;
408 unsigned long arg_start, arg_end, env_start, env_end;
409
410 unsigned long saved_auxv[AT_VECTOR_SIZE]; /* for /proc/PID/auxv */
411
412 cpumask_t cpu_vm_mask;
413
414 /* Architecture-specific MM context */
415 mm_context_t context;
416
417 /* Swap token stuff */
418 /*
419 * Last value of global fault stamp as seen by this process.
420 * In other words, this value gives an indication of how long
421 * it has been since this task got the token.
422 * Look at mm/thrash.c
423 */
424 unsigned int faultstamp;
425 unsigned int token_priority;
426 unsigned int last_interval;
427
428 unsigned long flags; /* Must use atomic bitops to access the bits */
429
430 /* coredumping support */
431 int core_waiters;
432 struct completion *core_startup_done, core_done;
433
434 /* aio bits */
435 rwlock_t ioctx_list_lock;
436 struct kioctx *ioctx_list;
437};
438
439struct sighand_struct { 367struct sighand_struct {
440 atomic_t count; 368 atomic_t count;
441 struct k_sigaction action[_NSIG]; 369 struct k_sigaction action[_NSIG];