2 #include <linux/hugetlb.h>
3 #include <linux/mount.h>
4 #include <linux/seq_file.h>
5 #include <linux/pagemap.h>
6 #include <linux/mempolicy.h>
8 #include <asm/uaccess.h>
11 char *task_mem(struct mm_struct *mm, char *buffer)
13 unsigned long data, text, lib;
15 data = mm->total_vm - mm->shared_vm - mm->stack_vm;
16 text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
17 lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
18 buffer += sprintf(buffer,
27 (mm->total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
28 mm->locked_vm << (PAGE_SHIFT-10),
29 get_mm_counter(mm, rss) << (PAGE_SHIFT-10),
30 data << (PAGE_SHIFT-10),
31 mm->stack_vm << (PAGE_SHIFT-10), text, lib,
32 (PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10);
36 unsigned long task_vsize(struct mm_struct *mm)
38 return PAGE_SIZE * mm->total_vm;
41 int task_statm(struct mm_struct *mm, int *shared, int *text,
42 int *data, int *resident)
44 int rss = get_mm_counter(mm, rss);
46 *shared = rss - get_mm_counter(mm, anon_rss);
47 *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
49 *data = mm->total_vm - mm->shared_vm;
54 int proc_exe_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
56 struct vm_area_struct * vma;
58 struct task_struct *task = proc_task(inode);
59 struct mm_struct * mm = get_task_mm(task);
63 down_read(&mm->mmap_sem);
67 if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file)
73 *mnt = mntget(vma->vm_file->f_vfsmnt);
74 *dentry = dget(vma->vm_file->f_dentry);
78 up_read(&mm->mmap_sem);
84 static void pad_len_spaces(struct seq_file *m, int len)
86 len = 25 + sizeof(void*) * 6 - len;
89 seq_printf(m, "%*c", len, ' ');
92 static int show_map(struct seq_file *m, void *v)
94 struct task_struct *task = m->private;
95 struct vm_area_struct *map = v;
96 struct mm_struct *mm = map->vm_mm;
97 struct file *file = map->vm_file;
98 int flags = map->vm_flags;
99 unsigned long ino = 0;
104 struct inode *inode = map->vm_file->f_dentry->d_inode;
105 dev = inode->i_sb->s_dev;
109 seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
112 flags & VM_READ ? 'r' : '-',
113 flags & VM_WRITE ? 'w' : '-',
114 flags & VM_EXEC ? 'x' : '-',
115 flags & VM_MAYSHARE ? 's' : 'p',
116 map->vm_pgoff << PAGE_SHIFT,
117 MAJOR(dev), MINOR(dev), ino, &len);
120 * Print the dentry name for named mappings, and a
121 * special [heap] marker for the heap:
124 pad_len_spaces(m, len);
125 seq_path(m, file->f_vfsmnt, file->f_dentry, "");
128 if (map->vm_start <= mm->start_brk &&
129 map->vm_end >= mm->brk) {
130 pad_len_spaces(m, len);
131 seq_puts(m, "[heap]");
133 if (map->vm_start <= mm->start_stack &&
134 map->vm_end >= mm->start_stack) {
136 pad_len_spaces(m, len);
137 seq_puts(m, "[stack]");
141 pad_len_spaces(m, len);
142 seq_puts(m, "[vdso]");
146 if (m->count < m->size) /* map is copied successfully */
147 m->version = (map != get_gate_vma(task))? map->vm_start: 0;
151 static void *m_start(struct seq_file *m, loff_t *pos)
153 struct task_struct *task = m->private;
154 unsigned long last_addr = m->version;
155 struct mm_struct *mm;
156 struct vm_area_struct *map, *tail_map;
160 * We remember last_addr rather than next_addr to hit with
161 * mmap_cache most of the time. We have zero last_addr at
162 * the begining and also after lseek. We will have -1 last_addr
163 * after the end of the maps.
166 if (last_addr == -1UL)
169 mm = get_task_mm(task);
173 tail_map = get_gate_vma(task);
174 down_read(&mm->mmap_sem);
176 /* Start with last addr hint */
177 if (last_addr && (map = find_vma(mm, last_addr))) {
183 * Check the map index is within the range and do
184 * sequential scan until m_index.
187 if ((unsigned long)l < mm->map_count) {
194 if (l != mm->map_count)
195 tail_map = NULL; /* After gate map */
201 /* End of maps has reached */
202 m->version = (tail_map != NULL)? 0: -1UL;
203 up_read(&mm->mmap_sem);
208 static void m_stop(struct seq_file *m, void *v)
210 struct task_struct *task = m->private;
211 struct vm_area_struct *map = v;
212 if (map && map != get_gate_vma(task)) {
213 struct mm_struct *mm = map->vm_mm;
214 up_read(&mm->mmap_sem);
219 static void *m_next(struct seq_file *m, void *v, loff_t *pos)
221 struct task_struct *task = m->private;
222 struct vm_area_struct *map = v;
223 struct vm_area_struct *tail_map = get_gate_vma(task);
226 if (map && (map != tail_map) && map->vm_next)
229 return (map != tail_map)? tail_map: NULL;
232 struct seq_operations proc_pid_maps_op = {
244 unsigned long mapped;
245 unsigned long mapcount_max;
246 unsigned long node[MAX_NUMNODES];
250 * Calculate numa node maps for a vma
252 static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
256 struct mm_struct *mm = vma->vm_mm;
258 struct numa_maps *md = kmalloc(sizeof(struct numa_maps), GFP_KERNEL);
265 md->mapcount_max = 0;
269 spin_lock(&mm->page_table_lock);
270 for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
271 page = follow_page(mm, vaddr, 0);
273 int count = page_mapcount(page);
277 if (count > md->mapcount_max)
278 md->mapcount_max = count;
282 md->node[page_to_nid(page)]++;
285 spin_unlock(&mm->page_table_lock);
289 static int show_numa_map(struct seq_file *m, void *v)
291 struct task_struct *task = m->private;
292 struct vm_area_struct *vma = v;
293 struct mempolicy *pol;
294 struct numa_maps *md;
302 md = get_numa_maps(vma);
306 seq_printf(m, "%08lx", vma->vm_start);
307 pol = get_vma_policy(task, vma, vma->vm_start);
309 switch (pol->policy) {
311 seq_printf(m, " prefer=%d", pol->v.preferred_node);
314 seq_printf(m, " bind={");
316 for (z = pol->v.zonelist->zones; *z; z++) {
322 seq_printf(m, "%d/%s", (*z)->zone_pgdat->node_id,
327 case MPOL_INTERLEAVE:
328 seq_printf(m, " interleave={");
331 if (test_bit(n, pol->v.nodes)) {
336 seq_printf(m, "%d",n);
342 seq_printf(m," default");
345 seq_printf(m, " MaxRef=%lu Pages=%lu Mapped=%lu",
346 md->mapcount_max, md->pages, md->mapped);
348 seq_printf(m," Anon=%lu",md->anon);
350 for_each_online_node(n) {
352 seq_printf(m, " N%d=%lu", n, md->node[n]);
356 if (m->count < m->size) /* vma is copied successfully */
357 m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
361 struct seq_operations proc_pid_numa_maps_op = {
365 .show = show_numa_map