2 #include <linux/hugetlb.h>
3 #include <linux/mount.h>
4 #include <linux/seq_file.h>
5 #include <linux/highmem.h>
6 #include <linux/pagemap.h>
7 #include <linux/mempolicy.h>
10 #include <asm/uaccess.h>
11 #include <asm/tlbflush.h>
14 char *task_mem(struct mm_struct *mm, char *buffer)
16 unsigned long data, text, lib;
17 unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss;
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.
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;
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,
47 hiwater_vm << (PAGE_SHIFT-10),
48 (total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
49 mm->locked_vm << (PAGE_SHIFT-10),
50 hiwater_rss << (PAGE_SHIFT-10),
51 total_rss << (PAGE_SHIFT-10),
52 data << (PAGE_SHIFT-10),
53 mm->stack_vm << (PAGE_SHIFT-10), text, lib,
54 (PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10);
58 unsigned long task_vsize(struct mm_struct *mm)
60 return PAGE_SIZE * mm->total_vm;
63 int task_statm(struct mm_struct *mm, int *shared, int *text,
64 int *data, int *resident)
66 *shared = get_mm_counter(mm, file_rss);
67 *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
69 *data = mm->total_vm - mm->shared_vm;
70 *resident = *shared + get_mm_counter(mm, anon_rss);
74 int proc_exe_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
76 struct vm_area_struct * vma;
78 struct task_struct *task = proc_task(inode);
79 struct mm_struct * mm = get_task_mm(task);
83 down_read(&mm->mmap_sem);
87 if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file)
93 *mnt = mntget(vma->vm_file->f_vfsmnt);
94 *dentry = dget(vma->vm_file->f_dentry);
98 up_read(&mm->mmap_sem);
104 static void pad_len_spaces(struct seq_file *m, int len)
106 len = 25 + sizeof(void*) * 6 - len;
109 seq_printf(m, "%*c", len, ' ');
112 struct mem_size_stats
114 unsigned long resident;
115 unsigned long shared_clean;
116 unsigned long shared_dirty;
117 unsigned long private_clean;
118 unsigned long private_dirty;
121 static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats *mss)
123 struct task_struct *task = m->private;
124 struct vm_area_struct *vma = v;
125 struct mm_struct *mm = vma->vm_mm;
126 struct file *file = vma->vm_file;
127 int flags = vma->vm_flags;
128 unsigned long ino = 0;
133 struct inode *inode = vma->vm_file->f_dentry->d_inode;
134 dev = inode->i_sb->s_dev;
138 seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
141 flags & VM_READ ? 'r' : '-',
142 flags & VM_WRITE ? 'w' : '-',
143 flags & VM_EXEC ? 'x' : '-',
144 flags & VM_MAYSHARE ? 's' : 'p',
145 vma->vm_pgoff << PAGE_SHIFT,
146 MAJOR(dev), MINOR(dev), ino, &len);
149 * Print the dentry name for named mappings, and a
150 * special [heap] marker for the heap:
153 pad_len_spaces(m, len);
154 seq_path(m, file->f_vfsmnt, file->f_dentry, "\n");
157 if (vma->vm_start <= mm->start_brk &&
158 vma->vm_end >= mm->brk) {
159 pad_len_spaces(m, len);
160 seq_puts(m, "[heap]");
162 if (vma->vm_start <= mm->start_stack &&
163 vma->vm_end >= mm->start_stack) {
165 pad_len_spaces(m, len);
166 seq_puts(m, "[stack]");
170 pad_len_spaces(m, len);
171 seq_puts(m, "[vdso]");
180 "Shared_Clean: %8lu kB\n"
181 "Shared_Dirty: %8lu kB\n"
182 "Private_Clean: %8lu kB\n"
183 "Private_Dirty: %8lu kB\n",
184 (vma->vm_end - vma->vm_start) >> 10,
186 mss->shared_clean >> 10,
187 mss->shared_dirty >> 10,
188 mss->private_clean >> 10,
189 mss->private_dirty >> 10);
191 if (m->count < m->size) /* vma is copied successfully */
192 m->version = (vma != get_gate_vma(task))? vma->vm_start: 0;
196 static int show_map(struct seq_file *m, void *v)
198 return show_map_internal(m, v, NULL);
201 static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
202 unsigned long addr, unsigned long end,
203 struct mem_size_stats *mss)
209 pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
212 if (!pte_present(ptent))
215 mss->resident += PAGE_SIZE;
217 page = vm_normal_page(vma, addr, ptent);
221 if (page_mapcount(page) >= 2) {
222 if (pte_dirty(ptent))
223 mss->shared_dirty += PAGE_SIZE;
225 mss->shared_clean += PAGE_SIZE;
227 if (pte_dirty(ptent))
228 mss->private_dirty += PAGE_SIZE;
230 mss->private_clean += PAGE_SIZE;
232 } while (pte++, addr += PAGE_SIZE, addr != end);
233 pte_unmap_unlock(pte - 1, ptl);
237 static inline void smaps_pmd_range(struct vm_area_struct *vma, pud_t *pud,
238 unsigned long addr, unsigned long end,
239 struct mem_size_stats *mss)
244 pmd = pmd_offset(pud, addr);
246 next = pmd_addr_end(addr, end);
247 if (pmd_none_or_clear_bad(pmd))
249 smaps_pte_range(vma, pmd, addr, next, mss);
250 } while (pmd++, addr = next, addr != end);
253 static inline void smaps_pud_range(struct vm_area_struct *vma, pgd_t *pgd,
254 unsigned long addr, unsigned long end,
255 struct mem_size_stats *mss)
260 pud = pud_offset(pgd, addr);
262 next = pud_addr_end(addr, end);
263 if (pud_none_or_clear_bad(pud))
265 smaps_pmd_range(vma, pud, addr, next, mss);
266 } while (pud++, addr = next, addr != end);
269 static inline void smaps_pgd_range(struct vm_area_struct *vma,
270 unsigned long addr, unsigned long end,
271 struct mem_size_stats *mss)
276 pgd = pgd_offset(vma->vm_mm, addr);
278 next = pgd_addr_end(addr, end);
279 if (pgd_none_or_clear_bad(pgd))
281 smaps_pud_range(vma, pgd, addr, next, mss);
282 } while (pgd++, addr = next, addr != end);
285 static int show_smap(struct seq_file *m, void *v)
287 struct vm_area_struct *vma = v;
288 struct mem_size_stats mss;
290 memset(&mss, 0, sizeof mss);
291 if (vma->vm_mm && !is_vm_hugetlb_page(vma))
292 smaps_pgd_range(vma, vma->vm_start, vma->vm_end, &mss);
293 return show_map_internal(m, v, &mss);
296 static void *m_start(struct seq_file *m, loff_t *pos)
298 struct task_struct *task = m->private;
299 unsigned long last_addr = m->version;
300 struct mm_struct *mm;
301 struct vm_area_struct *vma, *tail_vma;
305 * We remember last_addr rather than next_addr to hit with
306 * mmap_cache most of the time. We have zero last_addr at
307 * the beginning and also after lseek. We will have -1 last_addr
308 * after the end of the vmas.
311 if (last_addr == -1UL)
314 mm = get_task_mm(task);
318 tail_vma = get_gate_vma(task);
319 down_read(&mm->mmap_sem);
321 /* Start with last addr hint */
322 if (last_addr && (vma = find_vma(mm, last_addr))) {
328 * Check the vma index is within the range and do
329 * sequential scan until m_index.
332 if ((unsigned long)l < mm->map_count) {
339 if (l != mm->map_count)
340 tail_vma = NULL; /* After gate vma */
346 /* End of vmas has been reached */
347 m->version = (tail_vma != NULL)? 0: -1UL;
348 up_read(&mm->mmap_sem);
353 static void m_stop(struct seq_file *m, void *v)
355 struct task_struct *task = m->private;
356 struct vm_area_struct *vma = v;
357 if (vma && vma != get_gate_vma(task)) {
358 struct mm_struct *mm = vma->vm_mm;
359 up_read(&mm->mmap_sem);
364 static void *m_next(struct seq_file *m, void *v, loff_t *pos)
366 struct task_struct *task = m->private;
367 struct vm_area_struct *vma = v;
368 struct vm_area_struct *tail_vma = get_gate_vma(task);
371 if (vma && (vma != tail_vma) && vma->vm_next)
374 return (vma != tail_vma)? tail_vma: NULL;
377 struct seq_operations proc_pid_maps_op = {
384 struct seq_operations proc_pid_smaps_op = {
392 extern int show_numa_map(struct seq_file *m, void *v);
394 struct seq_operations proc_pid_numa_maps_op = {
398 .show = show_numa_map