aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to 'include')
-rw-r--r--include/asm-frv/mmu.h1
-rw-r--r--include/asm-m32r/mmu.h1
-rw-r--r--include/linux/mm.h18
-rw-r--r--include/linux/mm_types.h19
4 files changed, 24 insertions, 15 deletions
diff --git a/include/asm-frv/mmu.h b/include/asm-frv/mmu.h
index 22c03714fb14..86ca0e86e7d2 100644
--- a/include/asm-frv/mmu.h
+++ b/include/asm-frv/mmu.h
@@ -22,7 +22,6 @@ typedef struct {
22 unsigned long dtlb_ptd_mapping; /* [DAMR5] PTD mapping for dtlb cached PGE */ 22 unsigned long dtlb_ptd_mapping; /* [DAMR5] PTD mapping for dtlb cached PGE */
23 23
24#else 24#else
25 struct vm_list_struct *vmlist;
26 unsigned long end_brk; 25 unsigned long end_brk;
27 26
28#endif 27#endif
diff --git a/include/asm-m32r/mmu.h b/include/asm-m32r/mmu.h
index d9bd724479cf..150cb92bb666 100644
--- a/include/asm-m32r/mmu.h
+++ b/include/asm-m32r/mmu.h
@@ -4,7 +4,6 @@
4#if !defined(CONFIG_MMU) 4#if !defined(CONFIG_MMU)
5 5
6typedef struct { 6typedef struct {
7 struct vm_list_struct *vmlist;
8 unsigned long end_brk; 7 unsigned long end_brk;
9} mm_context_t; 8} mm_context_t;
10 9
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 4a3d28c86443..b91a73fd1bcc 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -56,19 +56,9 @@ extern unsigned long mmap_min_addr;
56 56
57extern struct kmem_cache *vm_area_cachep; 57extern struct kmem_cache *vm_area_cachep;
58 58
59/*
60 * This struct defines the per-mm list of VMAs for uClinux. If CONFIG_MMU is
61 * disabled, then there's a single shared list of VMAs maintained by the
62 * system, and mm's subscribe to these individually
63 */
64struct vm_list_struct {
65 struct vm_list_struct *next;
66 struct vm_area_struct *vma;
67};
68
69#ifndef CONFIG_MMU 59#ifndef CONFIG_MMU
70extern struct rb_root nommu_vma_tree; 60extern struct rb_root nommu_region_tree;
71extern struct rw_semaphore nommu_vma_sem; 61extern struct rw_semaphore nommu_region_sem;
72 62
73extern unsigned int kobjsize(const void *objp); 63extern unsigned int kobjsize(const void *objp);
74#endif 64#endif
@@ -1061,6 +1051,7 @@ extern void memmap_init_zone(unsigned long, int, unsigned long,
1061 unsigned long, enum memmap_context); 1051 unsigned long, enum memmap_context);
1062extern void setup_per_zone_pages_min(void); 1052extern void setup_per_zone_pages_min(void);
1063extern void mem_init(void); 1053extern void mem_init(void);
1054extern void __init mmap_init(void);
1064extern void show_mem(void); 1055extern void show_mem(void);
1065extern void si_meminfo(struct sysinfo * val); 1056extern void si_meminfo(struct sysinfo * val);
1066extern void si_meminfo_node(struct sysinfo *val, int nid); 1057extern void si_meminfo_node(struct sysinfo *val, int nid);
@@ -1072,6 +1063,9 @@ extern void setup_per_cpu_pageset(void);
1072static inline void setup_per_cpu_pageset(void) {} 1063static inline void setup_per_cpu_pageset(void) {}
1073#endif 1064#endif
1074 1065
1066/* nommu.c */
1067extern atomic_t mmap_pages_allocated;
1068
1075/* prio_tree.c */ 1069/* prio_tree.c */
1076void vma_prio_tree_add(struct vm_area_struct *, struct vm_area_struct *old); 1070void vma_prio_tree_add(struct vm_area_struct *, struct vm_area_struct *old);
1077void vma_prio_tree_insert(struct vm_area_struct *, struct prio_tree_root *); 1071void vma_prio_tree_insert(struct vm_area_struct *, struct prio_tree_root *);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 9cfc9b627fdd..92915e81443f 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -97,6 +97,23 @@ struct page {
97}; 97};
98 98
99/* 99/*
100 * A region containing a mapping of a non-memory backed file under NOMMU
101 * conditions. These are held in a global tree and are pinned by the VMAs that
102 * map parts of them.
103 */
104struct vm_region {
105 struct rb_node vm_rb; /* link in global region tree */
106 unsigned long vm_flags; /* VMA vm_flags */
107 unsigned long vm_start; /* start address of region */
108 unsigned long vm_end; /* region initialised to here */
109 unsigned long vm_top; /* region allocated to here */
110 unsigned long vm_pgoff; /* the offset in vm_file corresponding to vm_start */
111 struct file *vm_file; /* the backing file or NULL */
112
113 atomic_t vm_usage; /* region usage count */
114};
115
116/*
100 * This struct defines a memory VMM memory area. There is one of these 117 * This struct defines a memory VMM memory area. There is one of these
101 * per VM-area/task. A VM area is any part of the process virtual memory 118 * per VM-area/task. A VM area is any part of the process virtual memory
102 * space that has a special rule for the page-fault handlers (ie a shared 119 * space that has a special rule for the page-fault handlers (ie a shared
@@ -152,7 +169,7 @@ struct vm_area_struct {
152 unsigned long vm_truncate_count;/* truncate_count or restart_addr */ 169 unsigned long vm_truncate_count;/* truncate_count or restart_addr */
153 170
154#ifndef CONFIG_MMU 171#ifndef CONFIG_MMU
155 atomic_t vm_usage; /* refcount (VMAs shared if !MMU) */ 172 struct vm_region *vm_region; /* NOMMU mapping region */
156#endif 173#endif
157#ifdef CONFIG_NUMA 174#ifdef CONFIG_NUMA
158 struct mempolicy *vm_policy; /* NUMA policy for the VMA */ 175 struct mempolicy *vm_policy; /* NUMA policy for the VMA */