blob: 55ade0d1562160000060c0b35b860b6ff018229a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/mm.h>
2#include <linux/hugetlb.h>
3#include <linux/mount.h>
4#include <linux/seq_file.h>
Mauricio Line070ad42005-09-03 15:55:10 -07005#include <linux/highmem.h>
Christoph Lameter6e21c8f2005-09-03 15:54:45 -07006#include <linux/pagemap.h>
7#include <linux/mempolicy.h>
Mauricio Line070ad42005-09-03 15:55:10 -07008
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <asm/elf.h>
10#include <asm/uaccess.h>
Mauricio Line070ad42005-09-03 15:55:10 -070011#include <asm/tlbflush.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include "internal.h"
13
14char *task_mem(struct mm_struct *mm, char *buffer)
15{
16 unsigned long data, text, lib;
Hugh Dickins365e9c872005-10-29 18:16:18 -070017 unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss;
18
19 /*
20 * Note: to minimize their overhead, mm maintains hiwater_vm and
21 * hiwater_rss only when about to *lower* total_vm or rss. Any
22 * collector of these hiwater stats must therefore get total_vm
23 * and rss too, which will usually be the higher. Barriers? not
24 * worth the effort, such snapshots can always be inconsistent.
25 */
26 hiwater_vm = total_vm = mm->total_vm;
27 if (hiwater_vm < mm->hiwater_vm)
28 hiwater_vm = mm->hiwater_vm;
29 hiwater_rss = total_rss = get_mm_rss(mm);
30 if (hiwater_rss < mm->hiwater_rss)
31 hiwater_rss = mm->hiwater_rss;
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33 data = mm->total_vm - mm->shared_vm - mm->stack_vm;
34 text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
35 lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
36 buffer += sprintf(buffer,
Hugh Dickins365e9c872005-10-29 18:16:18 -070037 "VmPeak:\t%8lu kB\n"
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 "VmSize:\t%8lu kB\n"
39 "VmLck:\t%8lu kB\n"
Hugh Dickins365e9c872005-10-29 18:16:18 -070040 "VmHWM:\t%8lu kB\n"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 "VmRSS:\t%8lu kB\n"
42 "VmData:\t%8lu kB\n"
43 "VmStk:\t%8lu kB\n"
44 "VmExe:\t%8lu kB\n"
45 "VmLib:\t%8lu kB\n"
46 "VmPTE:\t%8lu kB\n",
Hugh Dickins365e9c872005-10-29 18:16:18 -070047 hiwater_vm << (PAGE_SHIFT-10),
48 (total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 mm->locked_vm << (PAGE_SHIFT-10),
Hugh Dickins365e9c872005-10-29 18:16:18 -070050 hiwater_rss << (PAGE_SHIFT-10),
51 total_rss << (PAGE_SHIFT-10),
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 data << (PAGE_SHIFT-10),
53 mm->stack_vm << (PAGE_SHIFT-10), text, lib,
54 (PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10);
55 return buffer;
56}
57
58unsigned long task_vsize(struct mm_struct *mm)
59{
60 return PAGE_SIZE * mm->total_vm;
61}
62
63int task_statm(struct mm_struct *mm, int *shared, int *text,
64 int *data, int *resident)
65{
Hugh Dickins42946212005-10-29 18:16:05 -070066 *shared = get_mm_counter(mm, file_rss);
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
68 >> PAGE_SHIFT;
69 *data = mm->total_vm - mm->shared_vm;
Hugh Dickins42946212005-10-29 18:16:05 -070070 *resident = *shared + get_mm_counter(mm, anon_rss);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 return mm->total_vm;
72}
73
74int proc_exe_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
75{
76 struct vm_area_struct * vma;
77 int result = -ENOENT;
Eric W. Biederman99f89552006-06-26 00:25:55 -070078 struct task_struct *task = get_proc_task(inode);
79 struct mm_struct * mm = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
Eric W. Biederman99f89552006-06-26 00:25:55 -070081 if (task) {
82 mm = get_task_mm(task);
83 put_task_struct(task);
84 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 if (!mm)
86 goto out;
87 down_read(&mm->mmap_sem);
88
89 vma = mm->mmap;
90 while (vma) {
91 if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file)
92 break;
93 vma = vma->vm_next;
94 }
95
96 if (vma) {
Josef "Jeff" Sipek2fddfee2006-12-08 02:36:36 -080097 *mnt = mntget(vma->vm_file->f_path.mnt);
98 *dentry = dget(vma->vm_file->f_path.dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 result = 0;
100 }
101
102 up_read(&mm->mmap_sem);
103 mmput(mm);
104out:
105 return result;
106}
107
108static void pad_len_spaces(struct seq_file *m, int len)
109{
110 len = 25 + sizeof(void*) * 6 - len;
111 if (len < 1)
112 len = 1;
113 seq_printf(m, "%*c", len, ' ');
114}
115
Mauricio Line070ad42005-09-03 15:55:10 -0700116struct mem_size_stats
117{
118 unsigned long resident;
119 unsigned long shared_clean;
120 unsigned long shared_dirty;
121 unsigned long private_clean;
122 unsigned long private_dirty;
123};
124
125static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats *mss)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126{
Eric W. Biederman99f89552006-06-26 00:25:55 -0700127 struct proc_maps_private *priv = m->private;
128 struct task_struct *task = priv->task;
Mauricio Line070ad42005-09-03 15:55:10 -0700129 struct vm_area_struct *vma = v;
130 struct mm_struct *mm = vma->vm_mm;
131 struct file *file = vma->vm_file;
132 int flags = vma->vm_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 unsigned long ino = 0;
134 dev_t dev = 0;
135 int len;
136
137 if (file) {
Josef "Jeff" Sipek2fddfee2006-12-08 02:36:36 -0800138 struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 dev = inode->i_sb->s_dev;
140 ino = inode->i_ino;
141 }
142
143 seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
Mauricio Line070ad42005-09-03 15:55:10 -0700144 vma->vm_start,
145 vma->vm_end,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 flags & VM_READ ? 'r' : '-',
147 flags & VM_WRITE ? 'w' : '-',
148 flags & VM_EXEC ? 'x' : '-',
149 flags & VM_MAYSHARE ? 's' : 'p',
Mauricio Line070ad42005-09-03 15:55:10 -0700150 vma->vm_pgoff << PAGE_SHIFT,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 MAJOR(dev), MINOR(dev), ino, &len);
152
153 /*
154 * Print the dentry name for named mappings, and a
155 * special [heap] marker for the heap:
156 */
Mauricio Line070ad42005-09-03 15:55:10 -0700157 if (file) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 pad_len_spaces(m, len);
Josef "Jeff" Sipek2fddfee2006-12-08 02:36:36 -0800159 seq_path(m, file->f_path.mnt, file->f_path.dentry, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 } else {
Ingo Molnare6e54942006-06-27 02:53:50 -0700161 const char *name = arch_vma_name(vma);
162 if (!name) {
163 if (mm) {
164 if (vma->vm_start <= mm->start_brk &&
Mauricio Line070ad42005-09-03 15:55:10 -0700165 vma->vm_end >= mm->brk) {
Ingo Molnare6e54942006-06-27 02:53:50 -0700166 name = "[heap]";
167 } else if (vma->vm_start <= mm->start_stack &&
168 vma->vm_end >= mm->start_stack) {
169 name = "[stack]";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 }
Ingo Molnare6e54942006-06-27 02:53:50 -0700171 } else {
172 name = "[vdso]";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 }
Ingo Molnare6e54942006-06-27 02:53:50 -0700174 }
175 if (name) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 pad_len_spaces(m, len);
Ingo Molnare6e54942006-06-27 02:53:50 -0700177 seq_puts(m, name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 }
179 }
180 seq_putc(m, '\n');
Mauricio Line070ad42005-09-03 15:55:10 -0700181
182 if (mss)
183 seq_printf(m,
184 "Size: %8lu kB\n"
185 "Rss: %8lu kB\n"
186 "Shared_Clean: %8lu kB\n"
187 "Shared_Dirty: %8lu kB\n"
188 "Private_Clean: %8lu kB\n"
189 "Private_Dirty: %8lu kB\n",
190 (vma->vm_end - vma->vm_start) >> 10,
191 mss->resident >> 10,
192 mss->shared_clean >> 10,
193 mss->shared_dirty >> 10,
194 mss->private_clean >> 10,
195 mss->private_dirty >> 10);
196
197 if (m->count < m->size) /* vma is copied successfully */
198 m->version = (vma != get_gate_vma(task))? vma->vm_start: 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 return 0;
200}
201
Mauricio Line070ad42005-09-03 15:55:10 -0700202static int show_map(struct seq_file *m, void *v)
203{
Luiz Fernando Capitulino0f5c79f2005-11-13 16:07:20 -0800204 return show_map_internal(m, v, NULL);
Mauricio Line070ad42005-09-03 15:55:10 -0700205}
206
207static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
208 unsigned long addr, unsigned long end,
209 struct mem_size_stats *mss)
210{
211 pte_t *pte, ptent;
Hugh Dickins705e87c2005-10-29 18:16:27 -0700212 spinlock_t *ptl;
Mauricio Line070ad42005-09-03 15:55:10 -0700213 struct page *page;
214
Hugh Dickins705e87c2005-10-29 18:16:27 -0700215 pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
Mauricio Line070ad42005-09-03 15:55:10 -0700216 do {
217 ptent = *pte;
Hugh Dickins705e87c2005-10-29 18:16:27 -0700218 if (!pte_present(ptent))
Mauricio Line070ad42005-09-03 15:55:10 -0700219 continue;
220
221 mss->resident += PAGE_SIZE;
Nick Pigginad820c5d2006-03-06 15:42:58 -0800222
223 page = vm_normal_page(vma, addr, ptent);
224 if (!page)
Mauricio Line070ad42005-09-03 15:55:10 -0700225 continue;
226
Nick Pigginad820c5d2006-03-06 15:42:58 -0800227 if (page_mapcount(page) >= 2) {
Mauricio Line070ad42005-09-03 15:55:10 -0700228 if (pte_dirty(ptent))
229 mss->shared_dirty += PAGE_SIZE;
230 else
231 mss->shared_clean += PAGE_SIZE;
232 } else {
233 if (pte_dirty(ptent))
234 mss->private_dirty += PAGE_SIZE;
235 else
236 mss->private_clean += PAGE_SIZE;
237 }
238 } while (pte++, addr += PAGE_SIZE, addr != end);
Hugh Dickins705e87c2005-10-29 18:16:27 -0700239 pte_unmap_unlock(pte - 1, ptl);
240 cond_resched();
Mauricio Line070ad42005-09-03 15:55:10 -0700241}
242
243static inline void smaps_pmd_range(struct vm_area_struct *vma, pud_t *pud,
244 unsigned long addr, unsigned long end,
245 struct mem_size_stats *mss)
246{
247 pmd_t *pmd;
248 unsigned long next;
249
250 pmd = pmd_offset(pud, addr);
251 do {
252 next = pmd_addr_end(addr, end);
253 if (pmd_none_or_clear_bad(pmd))
254 continue;
255 smaps_pte_range(vma, pmd, addr, next, mss);
256 } while (pmd++, addr = next, addr != end);
257}
258
259static inline void smaps_pud_range(struct vm_area_struct *vma, pgd_t *pgd,
260 unsigned long addr, unsigned long end,
261 struct mem_size_stats *mss)
262{
263 pud_t *pud;
264 unsigned long next;
265
266 pud = pud_offset(pgd, addr);
267 do {
268 next = pud_addr_end(addr, end);
269 if (pud_none_or_clear_bad(pud))
270 continue;
271 smaps_pmd_range(vma, pud, addr, next, mss);
272 } while (pud++, addr = next, addr != end);
273}
274
275static inline void smaps_pgd_range(struct vm_area_struct *vma,
276 unsigned long addr, unsigned long end,
277 struct mem_size_stats *mss)
278{
279 pgd_t *pgd;
280 unsigned long next;
281
282 pgd = pgd_offset(vma->vm_mm, addr);
283 do {
284 next = pgd_addr_end(addr, end);
285 if (pgd_none_or_clear_bad(pgd))
286 continue;
287 smaps_pud_range(vma, pgd, addr, next, mss);
288 } while (pgd++, addr = next, addr != end);
289}
290
291static int show_smap(struct seq_file *m, void *v)
292{
293 struct vm_area_struct *vma = v;
Mauricio Line070ad42005-09-03 15:55:10 -0700294 struct mem_size_stats mss;
295
296 memset(&mss, 0, sizeof mss);
Nick Piggin5ddfae12006-03-06 15:42:57 -0800297 if (vma->vm_mm && !is_vm_hugetlb_page(vma))
Mauricio Line070ad42005-09-03 15:55:10 -0700298 smaps_pgd_range(vma, vma->vm_start, vma->vm_end, &mss);
Mauricio Line070ad42005-09-03 15:55:10 -0700299 return show_map_internal(m, v, &mss);
300}
301
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302static void *m_start(struct seq_file *m, loff_t *pos)
303{
Eric W. Biederman99f89552006-06-26 00:25:55 -0700304 struct proc_maps_private *priv = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 unsigned long last_addr = m->version;
306 struct mm_struct *mm;
Eric W. Biederman99f89552006-06-26 00:25:55 -0700307 struct vm_area_struct *vma, *tail_vma = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 loff_t l = *pos;
309
Eric W. Biederman99f89552006-06-26 00:25:55 -0700310 /* Clear the per syscall fields in priv */
311 priv->task = NULL;
312 priv->tail_vma = NULL;
313
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 /*
315 * We remember last_addr rather than next_addr to hit with
316 * mmap_cache most of the time. We have zero last_addr at
Mauricio Line070ad42005-09-03 15:55:10 -0700317 * the beginning and also after lseek. We will have -1 last_addr
318 * after the end of the vmas.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 */
320
321 if (last_addr == -1UL)
322 return NULL;
323
Eric W. Biederman13b41b02006-06-26 00:25:56 -0700324 priv->task = get_pid_task(priv->pid, PIDTYPE_PID);
Eric W. Biederman99f89552006-06-26 00:25:55 -0700325 if (!priv->task)
326 return NULL;
327
328 mm = get_task_mm(priv->task);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 if (!mm)
330 return NULL;
331
Eric W. Biederman99f89552006-06-26 00:25:55 -0700332 priv->tail_vma = tail_vma = get_gate_vma(priv->task);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 down_read(&mm->mmap_sem);
334
335 /* Start with last addr hint */
Mauricio Line070ad42005-09-03 15:55:10 -0700336 if (last_addr && (vma = find_vma(mm, last_addr))) {
337 vma = vma->vm_next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 goto out;
339 }
340
341 /*
Mauricio Line070ad42005-09-03 15:55:10 -0700342 * Check the vma index is within the range and do
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 * sequential scan until m_index.
344 */
Mauricio Line070ad42005-09-03 15:55:10 -0700345 vma = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 if ((unsigned long)l < mm->map_count) {
Mauricio Line070ad42005-09-03 15:55:10 -0700347 vma = mm->mmap;
348 while (l-- && vma)
349 vma = vma->vm_next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 goto out;
351 }
352
353 if (l != mm->map_count)
Mauricio Line070ad42005-09-03 15:55:10 -0700354 tail_vma = NULL; /* After gate vma */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
356out:
Mauricio Line070ad42005-09-03 15:55:10 -0700357 if (vma)
358 return vma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
Mauricio Line070ad42005-09-03 15:55:10 -0700360 /* End of vmas has been reached */
361 m->version = (tail_vma != NULL)? 0: -1UL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 up_read(&mm->mmap_sem);
363 mmput(mm);
Mauricio Line070ad42005-09-03 15:55:10 -0700364 return tail_vma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365}
366
Eric W. Biederman99f89552006-06-26 00:25:55 -0700367static void vma_stop(struct proc_maps_private *priv, struct vm_area_struct *vma)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368{
Eric W. Biederman99f89552006-06-26 00:25:55 -0700369 if (vma && vma != priv->tail_vma) {
Mauricio Line070ad42005-09-03 15:55:10 -0700370 struct mm_struct *mm = vma->vm_mm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 up_read(&mm->mmap_sem);
372 mmput(mm);
373 }
374}
375
376static void *m_next(struct seq_file *m, void *v, loff_t *pos)
377{
Eric W. Biederman99f89552006-06-26 00:25:55 -0700378 struct proc_maps_private *priv = m->private;
Mauricio Line070ad42005-09-03 15:55:10 -0700379 struct vm_area_struct *vma = v;
Eric W. Biederman99f89552006-06-26 00:25:55 -0700380 struct vm_area_struct *tail_vma = priv->tail_vma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381
382 (*pos)++;
Mauricio Line070ad42005-09-03 15:55:10 -0700383 if (vma && (vma != tail_vma) && vma->vm_next)
384 return vma->vm_next;
Eric W. Biederman99f89552006-06-26 00:25:55 -0700385 vma_stop(priv, vma);
Mauricio Line070ad42005-09-03 15:55:10 -0700386 return (vma != tail_vma)? tail_vma: NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387}
388
Eric W. Biederman99f89552006-06-26 00:25:55 -0700389static void m_stop(struct seq_file *m, void *v)
390{
391 struct proc_maps_private *priv = m->private;
392 struct vm_area_struct *vma = v;
393
394 vma_stop(priv, vma);
395 if (priv->task)
396 put_task_struct(priv->task);
397}
398
Eric W. Biederman662795d2006-06-26 00:25:48 -0700399static struct seq_operations proc_pid_maps_op = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 .start = m_start,
401 .next = m_next,
402 .stop = m_stop,
403 .show = show_map
404};
Christoph Lameter6e21c8f2005-09-03 15:54:45 -0700405
Eric W. Biederman662795d2006-06-26 00:25:48 -0700406static struct seq_operations proc_pid_smaps_op = {
Mauricio Line070ad42005-09-03 15:55:10 -0700407 .start = m_start,
408 .next = m_next,
409 .stop = m_stop,
410 .show = show_smap
411};
412
Eric W. Biederman662795d2006-06-26 00:25:48 -0700413static int do_maps_open(struct inode *inode, struct file *file,
414 struct seq_operations *ops)
415{
Eric W. Biederman99f89552006-06-26 00:25:55 -0700416 struct proc_maps_private *priv;
417 int ret = -ENOMEM;
418 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
419 if (priv) {
Eric W. Biederman13b41b02006-06-26 00:25:56 -0700420 priv->pid = proc_pid(inode);
Eric W. Biederman99f89552006-06-26 00:25:55 -0700421 ret = seq_open(file, ops);
422 if (!ret) {
423 struct seq_file *m = file->private_data;
424 m->private = priv;
425 } else {
426 kfree(priv);
427 }
Eric W. Biederman662795d2006-06-26 00:25:48 -0700428 }
429 return ret;
430}
431
432static int maps_open(struct inode *inode, struct file *file)
433{
434 return do_maps_open(inode, file, &proc_pid_maps_op);
435}
436
437struct file_operations proc_maps_operations = {
438 .open = maps_open,
439 .read = seq_read,
440 .llseek = seq_lseek,
Eric W. Biederman99f89552006-06-26 00:25:55 -0700441 .release = seq_release_private,
Eric W. Biederman662795d2006-06-26 00:25:48 -0700442};
443
Christoph Lameter6e21c8f2005-09-03 15:54:45 -0700444#ifdef CONFIG_NUMA
Christoph Lameter1a75a6c2006-01-08 01:01:02 -0800445extern int show_numa_map(struct seq_file *m, void *v);
Christoph Lameter6e21c8f2005-09-03 15:54:45 -0700446
Eric W. Biederman662795d2006-06-26 00:25:48 -0700447static struct seq_operations proc_pid_numa_maps_op = {
Christoph Lameter1a75a6c2006-01-08 01:01:02 -0800448 .start = m_start,
449 .next = m_next,
450 .stop = m_stop,
451 .show = show_numa_map
Christoph Lameter6e21c8f2005-09-03 15:54:45 -0700452};
Eric W. Biederman662795d2006-06-26 00:25:48 -0700453
454static int numa_maps_open(struct inode *inode, struct file *file)
455{
456 return do_maps_open(inode, file, &proc_pid_numa_maps_op);
457}
458
459struct file_operations proc_numa_maps_operations = {
460 .open = numa_maps_open,
461 .read = seq_read,
462 .llseek = seq_lseek,
Eric W. Biederman99f89552006-06-26 00:25:55 -0700463 .release = seq_release_private,
Eric W. Biederman662795d2006-06-26 00:25:48 -0700464};
Christoph Lameter6e21c8f2005-09-03 15:54:45 -0700465#endif
Eric W. Biederman662795d2006-06-26 00:25:48 -0700466
467static int smaps_open(struct inode *inode, struct file *file)
468{
469 return do_maps_open(inode, file, &proc_pid_smaps_op);
470}
471
472struct file_operations proc_smaps_operations = {
473 .open = smaps_open,
474 .read = seq_read,
475 .llseek = seq_lseek,
Eric W. Biederman99f89552006-06-26 00:25:55 -0700476 .release = seq_release_private,
Eric W. Biederman662795d2006-06-26 00:25:48 -0700477};