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-rw-r--r--fs/proc/internal.h2
-rw-r--r--fs/proc/meminfo.c6
-rw-r--r--fs/proc/nommu.c71
-rw-r--r--fs/proc/task_nommu.c108
4 files changed, 113 insertions, 74 deletions
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 3e8aeb8b61ce..cd53ff838498 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -41,8 +41,6 @@ do { \
41 (vmi)->used = 0; \ 41 (vmi)->used = 0; \
42 (vmi)->largest_chunk = 0; \ 42 (vmi)->largest_chunk = 0; \
43} while(0) 43} while(0)
44
45extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
46#endif 44#endif
47 45
48extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns, 46extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index b1675c4e66da..43d23948384a 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -74,6 +74,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
74 "LowTotal: %8lu kB\n" 74 "LowTotal: %8lu kB\n"
75 "LowFree: %8lu kB\n" 75 "LowFree: %8lu kB\n"
76#endif 76#endif
77#ifndef CONFIG_MMU
78 "MmapCopy: %8lu kB\n"
79#endif
77 "SwapTotal: %8lu kB\n" 80 "SwapTotal: %8lu kB\n"
78 "SwapFree: %8lu kB\n" 81 "SwapFree: %8lu kB\n"
79 "Dirty: %8lu kB\n" 82 "Dirty: %8lu kB\n"
@@ -116,6 +119,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
116 K(i.totalram-i.totalhigh), 119 K(i.totalram-i.totalhigh),
117 K(i.freeram-i.freehigh), 120 K(i.freeram-i.freehigh),
118#endif 121#endif
122#ifndef CONFIG_MMU
123 K((unsigned long) atomic_read(&mmap_pages_allocated)),
124#endif
119 K(i.totalswap), 125 K(i.totalswap),
120 K(i.freeswap), 126 K(i.freeswap),
121 K(global_page_state(NR_FILE_DIRTY)), 127 K(global_page_state(NR_FILE_DIRTY)),
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 3f87d2632947..b446d7ad0b0d 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -33,33 +33,33 @@
33#include "internal.h" 33#include "internal.h"
34 34
35/* 35/*
36 * display a single VMA to a sequenced file 36 * display a single region to a sequenced file
37 */ 37 */
38int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) 38static int nommu_region_show(struct seq_file *m, struct vm_region *region)
39{ 39{
40 unsigned long ino = 0; 40 unsigned long ino = 0;
41 struct file *file; 41 struct file *file;
42 dev_t dev = 0; 42 dev_t dev = 0;
43 int flags, len; 43 int flags, len;
44 44
45 flags = vma->vm_flags; 45 flags = region->vm_flags;
46 file = vma->vm_file; 46 file = region->vm_file;
47 47
48 if (file) { 48 if (file) {
49 struct inode *inode = vma->vm_file->f_path.dentry->d_inode; 49 struct inode *inode = region->vm_file->f_path.dentry->d_inode;
50 dev = inode->i_sb->s_dev; 50 dev = inode->i_sb->s_dev;
51 ino = inode->i_ino; 51 ino = inode->i_ino;
52 } 52 }
53 53
54 seq_printf(m, 54 seq_printf(m,
55 "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", 55 "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
56 vma->vm_start, 56 region->vm_start,
57 vma->vm_end, 57 region->vm_end,
58 flags & VM_READ ? 'r' : '-', 58 flags & VM_READ ? 'r' : '-',
59 flags & VM_WRITE ? 'w' : '-', 59 flags & VM_WRITE ? 'w' : '-',
60 flags & VM_EXEC ? 'x' : '-', 60 flags & VM_EXEC ? 'x' : '-',
61 flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p', 61 flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
62 ((loff_t)vma->vm_pgoff) << PAGE_SHIFT, 62 ((loff_t)region->vm_pgoff) << PAGE_SHIFT,
63 MAJOR(dev), MINOR(dev), ino, &len); 63 MAJOR(dev), MINOR(dev), ino, &len);
64 64
65 if (file) { 65 if (file) {
@@ -75,61 +75,54 @@ int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma)
75} 75}
76 76
77/* 77/*
78 * display a list of all the VMAs the kernel knows about 78 * display a list of all the REGIONs the kernel knows about
79 * - nommu kernals have a single flat list 79 * - nommu kernals have a single flat list
80 */ 80 */
81static int nommu_vma_list_show(struct seq_file *m, void *v) 81static int nommu_region_list_show(struct seq_file *m, void *_p)
82{ 82{
83 struct vm_area_struct *vma; 83 struct rb_node *p = _p;
84 84
85 vma = rb_entry((struct rb_node *) v, struct vm_area_struct, vm_rb); 85 return nommu_region_show(m, rb_entry(p, struct vm_region, vm_rb));
86 return nommu_vma_show(m, vma);
87} 86}
88 87
89static void *nommu_vma_list_start(struct seq_file *m, loff_t *_pos) 88static void *nommu_region_list_start(struct seq_file *m, loff_t *_pos)
90{ 89{
91 struct rb_node *_rb; 90 struct rb_node *p;
92 loff_t pos = *_pos; 91 loff_t pos = *_pos;
93 void *next = NULL;
94 92
95 down_read(&nommu_vma_sem); 93 down_read(&nommu_region_sem);
96 94
97 for (_rb = rb_first(&nommu_vma_tree); _rb; _rb = rb_next(_rb)) { 95 for (p = rb_first(&nommu_region_tree); p; p = rb_next(p))
98 if (pos == 0) { 96 if (pos-- == 0)
99 next = _rb; 97 return p;
100 break; 98 return NULL;
101 }
102 pos--;
103 }
104
105 return next;
106} 99}
107 100
108static void nommu_vma_list_stop(struct seq_file *m, void *v) 101static void nommu_region_list_stop(struct seq_file *m, void *v)
109{ 102{
110 up_read(&nommu_vma_sem); 103 up_read(&nommu_region_sem);
111} 104}
112 105
113static void *nommu_vma_list_next(struct seq_file *m, void *v, loff_t *pos) 106static void *nommu_region_list_next(struct seq_file *m, void *v, loff_t *pos)
114{ 107{
115 (*pos)++; 108 (*pos)++;
116 return rb_next((struct rb_node *) v); 109 return rb_next((struct rb_node *) v);
117} 110}
118 111
119static const struct seq_operations proc_nommu_vma_list_seqop = { 112static struct seq_operations proc_nommu_region_list_seqop = {
120 .start = nommu_vma_list_start, 113 .start = nommu_region_list_start,
121 .next = nommu_vma_list_next, 114 .next = nommu_region_list_next,
122 .stop = nommu_vma_list_stop, 115 .stop = nommu_region_list_stop,
123 .show = nommu_vma_list_show 116 .show = nommu_region_list_show
124}; 117};
125 118
126static int proc_nommu_vma_list_open(struct inode *inode, struct file *file) 119static int proc_nommu_region_list_open(struct inode *inode, struct file *file)
127{ 120{
128 return seq_open(file, &proc_nommu_vma_list_seqop); 121 return seq_open(file, &proc_nommu_region_list_seqop);
129} 122}
130 123
131static const struct file_operations proc_nommu_vma_list_operations = { 124static const struct file_operations proc_nommu_region_list_operations = {
132 .open = proc_nommu_vma_list_open, 125 .open = proc_nommu_region_list_open,
133 .read = seq_read, 126 .read = seq_read,
134 .llseek = seq_lseek, 127 .llseek = seq_lseek,
135 .release = seq_release, 128 .release = seq_release,
@@ -137,7 +130,7 @@ static const struct file_operations proc_nommu_vma_list_operations = {
137 130
138static int __init proc_nommu_init(void) 131static int __init proc_nommu_init(void)
139{ 132{
140 proc_create("maps", S_IRUGO, NULL, &proc_nommu_vma_list_operations); 133 proc_create("maps", S_IRUGO, NULL, &proc_nommu_region_list_operations);
141 return 0; 134 return 0;
142} 135}
143 136
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index d4a8be32b902..ca4a48d0d311 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -15,25 +15,25 @@
15 */ 15 */
16void task_mem(struct seq_file *m, struct mm_struct *mm) 16void task_mem(struct seq_file *m, struct mm_struct *mm)
17{ 17{
18 struct vm_list_struct *vml; 18 struct vm_area_struct *vma;
19 struct rb_node *p;
19 unsigned long bytes = 0, sbytes = 0, slack = 0; 20 unsigned long bytes = 0, sbytes = 0, slack = 0;
20 21
21 down_read(&mm->mmap_sem); 22 down_read(&mm->mmap_sem);
22 for (vml = mm->context.vmlist; vml; vml = vml->next) { 23 for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) {
23 if (!vml->vma) 24 vma = rb_entry(p, struct vm_area_struct, vm_rb);
24 continue;
25 25
26 bytes += kobjsize(vml); 26 bytes += kobjsize(vma);
27 if (atomic_read(&mm->mm_count) > 1 || 27 if (atomic_read(&mm->mm_count) > 1 ||
28 atomic_read(&vml->vma->vm_usage) > 1 28 vma->vm_region ||
29 ) { 29 vma->vm_flags & VM_MAYSHARE) {
30 sbytes += kobjsize((void *) vml->vma->vm_start); 30 sbytes += kobjsize((void *) vma->vm_start);
31 sbytes += kobjsize(vml->vma); 31 if (vma->vm_region)
32 sbytes += kobjsize(vma->vm_region);
32 } else { 33 } else {
33 bytes += kobjsize((void *) vml->vma->vm_start); 34 bytes += kobjsize((void *) vma->vm_start);
34 bytes += kobjsize(vml->vma); 35 slack += kobjsize((void *) vma->vm_start) -
35 slack += kobjsize((void *) vml->vma->vm_start) - 36 (vma->vm_end - vma->vm_start);
36 (vml->vma->vm_end - vml->vma->vm_start);
37 } 37 }
38 } 38 }
39 39
@@ -70,13 +70,14 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
70 70
71unsigned long task_vsize(struct mm_struct *mm) 71unsigned long task_vsize(struct mm_struct *mm)
72{ 72{
73 struct vm_list_struct *tbp; 73 struct vm_area_struct *vma;
74 struct rb_node *p;
74 unsigned long vsize = 0; 75 unsigned long vsize = 0;
75 76
76 down_read(&mm->mmap_sem); 77 down_read(&mm->mmap_sem);
77 for (tbp = mm->context.vmlist; tbp; tbp = tbp->next) { 78 for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) {
78 if (tbp->vma) 79 vma = rb_entry(p, struct vm_area_struct, vm_rb);
79 vsize += kobjsize((void *) tbp->vma->vm_start); 80 vsize += vma->vm_region->vm_end - vma->vm_region->vm_start;
80 } 81 }
81 up_read(&mm->mmap_sem); 82 up_read(&mm->mmap_sem);
82 return vsize; 83 return vsize;
@@ -85,16 +86,15 @@ unsigned long task_vsize(struct mm_struct *mm)
85int task_statm(struct mm_struct *mm, int *shared, int *text, 86int task_statm(struct mm_struct *mm, int *shared, int *text,
86 int *data, int *resident) 87 int *data, int *resident)
87{ 88{
88 struct vm_list_struct *tbp; 89 struct vm_area_struct *vma;
90 struct rb_node *p;
89 int size = kobjsize(mm); 91 int size = kobjsize(mm);
90 92
91 down_read(&mm->mmap_sem); 93 down_read(&mm->mmap_sem);
92 for (tbp = mm->context.vmlist; tbp; tbp = tbp->next) { 94 for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) {
93 size += kobjsize(tbp); 95 vma = rb_entry(p, struct vm_area_struct, vm_rb);
94 if (tbp->vma) { 96 size += kobjsize(vma);
95 size += kobjsize(tbp->vma); 97 size += kobjsize((void *) vma->vm_start);
96 size += kobjsize((void *) tbp->vma->vm_start);
97 }
98 } 98 }
99 99
100 size += (*text = mm->end_code - mm->start_code); 100 size += (*text = mm->end_code - mm->start_code);
@@ -105,20 +105,62 @@ int task_statm(struct mm_struct *mm, int *shared, int *text,
105} 105}
106 106
107/* 107/*
108 * display a single VMA to a sequenced file
109 */
110static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma)
111{
112 unsigned long ino = 0;
113 struct file *file;
114 dev_t dev = 0;
115 int flags, len;
116
117 flags = vma->vm_flags;
118 file = vma->vm_file;
119
120 if (file) {
121 struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
122 dev = inode->i_sb->s_dev;
123 ino = inode->i_ino;
124 }
125
126 seq_printf(m,
127 "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
128 vma->vm_start,
129 vma->vm_end,
130 flags & VM_READ ? 'r' : '-',
131 flags & VM_WRITE ? 'w' : '-',
132 flags & VM_EXEC ? 'x' : '-',
133 flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
134 vma->vm_pgoff << PAGE_SHIFT,
135 MAJOR(dev), MINOR(dev), ino, &len);
136
137 if (file) {
138 len = 25 + sizeof(void *) * 6 - len;
139 if (len < 1)
140 len = 1;
141 seq_printf(m, "%*c", len, ' ');
142 seq_path(m, &file->f_path, "");
143 }
144
145 seq_putc(m, '\n');
146 return 0;
147}
148
149/*
108 * display mapping lines for a particular process's /proc/pid/maps 150 * display mapping lines for a particular process's /proc/pid/maps
109 */ 151 */
110static int show_map(struct seq_file *m, void *_vml) 152static int show_map(struct seq_file *m, void *_p)
111{ 153{
112 struct vm_list_struct *vml = _vml; 154 struct rb_node *p = _p;
113 155
114 return nommu_vma_show(m, vml->vma); 156 return nommu_vma_show(m, rb_entry(p, struct vm_area_struct, vm_rb));
115} 157}
116 158
117static void *m_start(struct seq_file *m, loff_t *pos) 159static void *m_start(struct seq_file *m, loff_t *pos)
118{ 160{
119 struct proc_maps_private *priv = m->private; 161 struct proc_maps_private *priv = m->private;
120 struct vm_list_struct *vml;
121 struct mm_struct *mm; 162 struct mm_struct *mm;
163 struct rb_node *p;
122 loff_t n = *pos; 164 loff_t n = *pos;
123 165
124 /* pin the task and mm whilst we play with them */ 166 /* pin the task and mm whilst we play with them */
@@ -134,9 +176,9 @@ static void *m_start(struct seq_file *m, loff_t *pos)
134 } 176 }
135 177
136 /* start from the Nth VMA */ 178 /* start from the Nth VMA */
137 for (vml = mm->context.vmlist; vml; vml = vml->next) 179 for (p = rb_first(&mm->mm_rb); p; p = rb_next(p))
138 if (n-- == 0) 180 if (n-- == 0)
139 return vml; 181 return p;
140 return NULL; 182 return NULL;
141} 183}
142 184
@@ -152,12 +194,12 @@ static void m_stop(struct seq_file *m, void *_vml)
152 } 194 }
153} 195}
154 196
155static void *m_next(struct seq_file *m, void *_vml, loff_t *pos) 197static void *m_next(struct seq_file *m, void *_p, loff_t *pos)
156{ 198{
157 struct vm_list_struct *vml = _vml; 199 struct rb_node *p = _p;
158 200
159 (*pos)++; 201 (*pos)++;
160 return vml ? vml->next : NULL; 202 return p ? rb_next(p) : NULL;
161} 203}
162 204
163static const struct seq_operations proc_pid_maps_ops = { 205static const struct seq_operations proc_pid_maps_ops = {
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-03 04:43:38 -0500