Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/mm.h> |
| 2 | #include <linux/hugetlb.h> |
| 3 | #include <linux/mount.h> |
| 4 | #include <linux/seq_file.h> |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 5 | #include <linux/highmem.h> |
Christoph Lameter | 6e21c8f | 2005-09-03 15:54:45 -0700 | [diff] [blame] | 6 | #include <linux/pagemap.h> |
| 7 | #include <linux/mempolicy.h> |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include <asm/elf.h> |
| 10 | #include <asm/uaccess.h> |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 11 | #include <asm/tlbflush.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include "internal.h" |
| 13 | |
| 14 | char *task_mem(struct mm_struct *mm, char *buffer) |
| 15 | { |
| 16 | unsigned long data, text, lib; |
Hugh Dickins | 365e9c87 | 2005-10-29 18:16:18 -0700 | [diff] [blame] | 17 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 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 Dickins | 365e9c87 | 2005-10-29 18:16:18 -0700 | [diff] [blame] | 37 | "VmPeak:\t%8lu kB\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | "VmSize:\t%8lu kB\n" |
| 39 | "VmLck:\t%8lu kB\n" |
Hugh Dickins | 365e9c87 | 2005-10-29 18:16:18 -0700 | [diff] [blame] | 40 | "VmHWM:\t%8lu kB\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | "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 Dickins | 365e9c87 | 2005-10-29 18:16:18 -0700 | [diff] [blame] | 47 | hiwater_vm << (PAGE_SHIFT-10), |
| 48 | (total_vm - mm->reserved_vm) << (PAGE_SHIFT-10), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | mm->locked_vm << (PAGE_SHIFT-10), |
Hugh Dickins | 365e9c87 | 2005-10-29 18:16:18 -0700 | [diff] [blame] | 50 | hiwater_rss << (PAGE_SHIFT-10), |
| 51 | total_rss << (PAGE_SHIFT-10), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
| 55 | return buffer; |
| 56 | } |
| 57 | |
| 58 | unsigned long task_vsize(struct mm_struct *mm) |
| 59 | { |
| 60 | return PAGE_SIZE * mm->total_vm; |
| 61 | } |
| 62 | |
| 63 | int task_statm(struct mm_struct *mm, int *shared, int *text, |
| 64 | int *data, int *resident) |
| 65 | { |
Hugh Dickins | 4294621 | 2005-10-29 18:16:05 -0700 | [diff] [blame] | 66 | *shared = get_mm_counter(mm, file_rss); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) |
| 68 | >> PAGE_SHIFT; |
| 69 | *data = mm->total_vm - mm->shared_vm; |
Hugh Dickins | 4294621 | 2005-10-29 18:16:05 -0700 | [diff] [blame] | 70 | *resident = *shared + get_mm_counter(mm, anon_rss); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | return mm->total_vm; |
| 72 | } |
| 73 | |
| 74 | int proc_exe_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt) |
| 75 | { |
| 76 | struct vm_area_struct * vma; |
| 77 | int result = -ENOENT; |
| 78 | struct task_struct *task = proc_task(inode); |
| 79 | struct mm_struct * mm = get_task_mm(task); |
| 80 | |
| 81 | if (!mm) |
| 82 | goto out; |
| 83 | down_read(&mm->mmap_sem); |
| 84 | |
| 85 | vma = mm->mmap; |
| 86 | while (vma) { |
| 87 | if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) |
| 88 | break; |
| 89 | vma = vma->vm_next; |
| 90 | } |
| 91 | |
| 92 | if (vma) { |
| 93 | *mnt = mntget(vma->vm_file->f_vfsmnt); |
| 94 | *dentry = dget(vma->vm_file->f_dentry); |
| 95 | result = 0; |
| 96 | } |
| 97 | |
| 98 | up_read(&mm->mmap_sem); |
| 99 | mmput(mm); |
| 100 | out: |
| 101 | return result; |
| 102 | } |
| 103 | |
| 104 | static void pad_len_spaces(struct seq_file *m, int len) |
| 105 | { |
| 106 | len = 25 + sizeof(void*) * 6 - len; |
| 107 | if (len < 1) |
| 108 | len = 1; |
| 109 | seq_printf(m, "%*c", len, ' '); |
| 110 | } |
| 111 | |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 112 | struct mem_size_stats |
| 113 | { |
| 114 | unsigned long resident; |
| 115 | unsigned long shared_clean; |
| 116 | unsigned long shared_dirty; |
| 117 | unsigned long private_clean; |
| 118 | unsigned long private_dirty; |
| 119 | }; |
| 120 | |
| 121 | static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats *mss) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | { |
| 123 | struct task_struct *task = m->private; |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | unsigned long ino = 0; |
| 129 | dev_t dev = 0; |
| 130 | int len; |
| 131 | |
| 132 | if (file) { |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 133 | struct inode *inode = vma->vm_file->f_dentry->d_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | dev = inode->i_sb->s_dev; |
| 135 | ino = inode->i_ino; |
| 136 | } |
| 137 | |
| 138 | seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n", |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 139 | vma->vm_start, |
| 140 | vma->vm_end, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | flags & VM_READ ? 'r' : '-', |
| 142 | flags & VM_WRITE ? 'w' : '-', |
| 143 | flags & VM_EXEC ? 'x' : '-', |
| 144 | flags & VM_MAYSHARE ? 's' : 'p', |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 145 | vma->vm_pgoff << PAGE_SHIFT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | MAJOR(dev), MINOR(dev), ino, &len); |
| 147 | |
| 148 | /* |
| 149 | * Print the dentry name for named mappings, and a |
| 150 | * special [heap] marker for the heap: |
| 151 | */ |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 152 | if (file) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | pad_len_spaces(m, len); |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 154 | seq_path(m, file->f_vfsmnt, file->f_dentry, "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | } else { |
| 156 | if (mm) { |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 157 | if (vma->vm_start <= mm->start_brk && |
| 158 | vma->vm_end >= mm->brk) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | pad_len_spaces(m, len); |
| 160 | seq_puts(m, "[heap]"); |
| 161 | } else { |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 162 | if (vma->vm_start <= mm->start_stack && |
| 163 | vma->vm_end >= mm->start_stack) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
| 165 | pad_len_spaces(m, len); |
| 166 | seq_puts(m, "[stack]"); |
| 167 | } |
| 168 | } |
| 169 | } else { |
| 170 | pad_len_spaces(m, len); |
| 171 | seq_puts(m, "[vdso]"); |
| 172 | } |
| 173 | } |
| 174 | seq_putc(m, '\n'); |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 175 | |
| 176 | if (mss) |
| 177 | seq_printf(m, |
| 178 | "Size: %8lu kB\n" |
| 179 | "Rss: %8lu kB\n" |
| 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, |
| 185 | mss->resident >> 10, |
| 186 | mss->shared_clean >> 10, |
| 187 | mss->shared_dirty >> 10, |
| 188 | mss->private_clean >> 10, |
| 189 | mss->private_dirty >> 10); |
| 190 | |
| 191 | if (m->count < m->size) /* vma is copied successfully */ |
| 192 | m->version = (vma != get_gate_vma(task))? vma->vm_start: 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | return 0; |
| 194 | } |
| 195 | |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 196 | static int show_map(struct seq_file *m, void *v) |
| 197 | { |
| 198 | return show_map_internal(m, v, 0); |
| 199 | } |
| 200 | |
| 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) |
| 204 | { |
| 205 | pte_t *pte, ptent; |
Hugh Dickins | 705e87c | 2005-10-29 18:16:27 -0700 | [diff] [blame] | 206 | spinlock_t *ptl; |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 207 | unsigned long pfn; |
| 208 | struct page *page; |
| 209 | |
Hugh Dickins | 705e87c | 2005-10-29 18:16:27 -0700 | [diff] [blame] | 210 | pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 211 | do { |
| 212 | ptent = *pte; |
Hugh Dickins | 705e87c | 2005-10-29 18:16:27 -0700 | [diff] [blame] | 213 | if (!pte_present(ptent)) |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 214 | continue; |
| 215 | |
| 216 | mss->resident += PAGE_SIZE; |
| 217 | pfn = pte_pfn(ptent); |
| 218 | if (!pfn_valid(pfn)) |
| 219 | continue; |
| 220 | |
| 221 | page = pfn_to_page(pfn); |
| 222 | if (page_count(page) >= 2) { |
| 223 | if (pte_dirty(ptent)) |
| 224 | mss->shared_dirty += PAGE_SIZE; |
| 225 | else |
| 226 | mss->shared_clean += PAGE_SIZE; |
| 227 | } else { |
| 228 | if (pte_dirty(ptent)) |
| 229 | mss->private_dirty += PAGE_SIZE; |
| 230 | else |
| 231 | mss->private_clean += PAGE_SIZE; |
| 232 | } |
| 233 | } while (pte++, addr += PAGE_SIZE, addr != end); |
Hugh Dickins | 705e87c | 2005-10-29 18:16:27 -0700 | [diff] [blame] | 234 | pte_unmap_unlock(pte - 1, ptl); |
| 235 | cond_resched(); |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | static inline void smaps_pmd_range(struct vm_area_struct *vma, pud_t *pud, |
| 239 | unsigned long addr, unsigned long end, |
| 240 | struct mem_size_stats *mss) |
| 241 | { |
| 242 | pmd_t *pmd; |
| 243 | unsigned long next; |
| 244 | |
| 245 | pmd = pmd_offset(pud, addr); |
| 246 | do { |
| 247 | next = pmd_addr_end(addr, end); |
| 248 | if (pmd_none_or_clear_bad(pmd)) |
| 249 | continue; |
| 250 | smaps_pte_range(vma, pmd, addr, next, mss); |
| 251 | } while (pmd++, addr = next, addr != end); |
| 252 | } |
| 253 | |
| 254 | static inline void smaps_pud_range(struct vm_area_struct *vma, pgd_t *pgd, |
| 255 | unsigned long addr, unsigned long end, |
| 256 | struct mem_size_stats *mss) |
| 257 | { |
| 258 | pud_t *pud; |
| 259 | unsigned long next; |
| 260 | |
| 261 | pud = pud_offset(pgd, addr); |
| 262 | do { |
| 263 | next = pud_addr_end(addr, end); |
| 264 | if (pud_none_or_clear_bad(pud)) |
| 265 | continue; |
| 266 | smaps_pmd_range(vma, pud, addr, next, mss); |
| 267 | } while (pud++, addr = next, addr != end); |
| 268 | } |
| 269 | |
| 270 | static inline void smaps_pgd_range(struct vm_area_struct *vma, |
| 271 | unsigned long addr, unsigned long end, |
| 272 | struct mem_size_stats *mss) |
| 273 | { |
| 274 | pgd_t *pgd; |
| 275 | unsigned long next; |
| 276 | |
| 277 | pgd = pgd_offset(vma->vm_mm, addr); |
| 278 | do { |
| 279 | next = pgd_addr_end(addr, end); |
| 280 | if (pgd_none_or_clear_bad(pgd)) |
| 281 | continue; |
| 282 | smaps_pud_range(vma, pgd, addr, next, mss); |
| 283 | } while (pgd++, addr = next, addr != end); |
| 284 | } |
| 285 | |
| 286 | static int show_smap(struct seq_file *m, void *v) |
| 287 | { |
| 288 | struct vm_area_struct *vma = v; |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 289 | struct mem_size_stats mss; |
| 290 | |
| 291 | memset(&mss, 0, sizeof mss); |
Hugh Dickins | 705e87c | 2005-10-29 18:16:27 -0700 | [diff] [blame] | 292 | if (vma->vm_mm) |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 293 | smaps_pgd_range(vma, vma->vm_start, vma->vm_end, &mss); |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 294 | return show_map_internal(m, v, &mss); |
| 295 | } |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | static void *m_start(struct seq_file *m, loff_t *pos) |
| 298 | { |
| 299 | struct task_struct *task = m->private; |
| 300 | unsigned long last_addr = m->version; |
| 301 | struct mm_struct *mm; |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 302 | struct vm_area_struct *vma, *tail_vma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | loff_t l = *pos; |
| 304 | |
| 305 | /* |
| 306 | * We remember last_addr rather than next_addr to hit with |
| 307 | * mmap_cache most of the time. We have zero last_addr at |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 308 | * the beginning and also after lseek. We will have -1 last_addr |
| 309 | * after the end of the vmas. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | */ |
| 311 | |
| 312 | if (last_addr == -1UL) |
| 313 | return NULL; |
| 314 | |
| 315 | mm = get_task_mm(task); |
| 316 | if (!mm) |
| 317 | return NULL; |
| 318 | |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 319 | tail_vma = get_gate_vma(task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | down_read(&mm->mmap_sem); |
| 321 | |
| 322 | /* Start with last addr hint */ |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 323 | if (last_addr && (vma = find_vma(mm, last_addr))) { |
| 324 | vma = vma->vm_next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | goto out; |
| 326 | } |
| 327 | |
| 328 | /* |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 329 | * Check the vma index is within the range and do |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | * sequential scan until m_index. |
| 331 | */ |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 332 | vma = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | if ((unsigned long)l < mm->map_count) { |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 334 | vma = mm->mmap; |
| 335 | while (l-- && vma) |
| 336 | vma = vma->vm_next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | goto out; |
| 338 | } |
| 339 | |
| 340 | if (l != mm->map_count) |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 341 | tail_vma = NULL; /* After gate vma */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | out: |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 344 | if (vma) |
| 345 | return vma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 347 | /* End of vmas has been reached */ |
| 348 | m->version = (tail_vma != NULL)? 0: -1UL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | up_read(&mm->mmap_sem); |
| 350 | mmput(mm); |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 351 | return tail_vma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | static void m_stop(struct seq_file *m, void *v) |
| 355 | { |
| 356 | struct task_struct *task = m->private; |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 357 | struct vm_area_struct *vma = v; |
| 358 | if (vma && vma != get_gate_vma(task)) { |
| 359 | struct mm_struct *mm = vma->vm_mm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | up_read(&mm->mmap_sem); |
| 361 | mmput(mm); |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | static void *m_next(struct seq_file *m, void *v, loff_t *pos) |
| 366 | { |
| 367 | struct task_struct *task = m->private; |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 368 | struct vm_area_struct *vma = v; |
| 369 | struct vm_area_struct *tail_vma = get_gate_vma(task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
| 371 | (*pos)++; |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 372 | if (vma && (vma != tail_vma) && vma->vm_next) |
| 373 | return vma->vm_next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | m_stop(m, v); |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 375 | return (vma != tail_vma)? tail_vma: NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | struct seq_operations proc_pid_maps_op = { |
| 379 | .start = m_start, |
| 380 | .next = m_next, |
| 381 | .stop = m_stop, |
| 382 | .show = show_map |
| 383 | }; |
Christoph Lameter | 6e21c8f | 2005-09-03 15:54:45 -0700 | [diff] [blame] | 384 | |
Mauricio Lin | e070ad4 | 2005-09-03 15:55:10 -0700 | [diff] [blame] | 385 | struct seq_operations proc_pid_smaps_op = { |
| 386 | .start = m_start, |
| 387 | .next = m_next, |
| 388 | .stop = m_stop, |
| 389 | .show = show_smap |
| 390 | }; |
| 391 | |
Christoph Lameter | 6e21c8f | 2005-09-03 15:54:45 -0700 | [diff] [blame] | 392 | #ifdef CONFIG_NUMA |
| 393 | |
| 394 | struct numa_maps { |
| 395 | unsigned long pages; |
| 396 | unsigned long anon; |
| 397 | unsigned long mapped; |
| 398 | unsigned long mapcount_max; |
| 399 | unsigned long node[MAX_NUMNODES]; |
| 400 | }; |
| 401 | |
| 402 | /* |
| 403 | * Calculate numa node maps for a vma |
| 404 | */ |
| 405 | static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma) |
| 406 | { |
| 407 | struct page *page; |
| 408 | unsigned long vaddr; |
| 409 | struct mm_struct *mm = vma->vm_mm; |
| 410 | int i; |
| 411 | struct numa_maps *md = kmalloc(sizeof(struct numa_maps), GFP_KERNEL); |
| 412 | |
| 413 | if (!md) |
| 414 | return NULL; |
| 415 | md->pages = 0; |
| 416 | md->anon = 0; |
| 417 | md->mapped = 0; |
| 418 | md->mapcount_max = 0; |
| 419 | for_each_node(i) |
| 420 | md->node[i] =0; |
| 421 | |
Christoph Lameter | 6e21c8f | 2005-09-03 15:54:45 -0700 | [diff] [blame] | 422 | for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) { |
| 423 | page = follow_page(mm, vaddr, 0); |
| 424 | if (page) { |
| 425 | int count = page_mapcount(page); |
| 426 | |
| 427 | if (count) |
| 428 | md->mapped++; |
| 429 | if (count > md->mapcount_max) |
| 430 | md->mapcount_max = count; |
| 431 | md->pages++; |
| 432 | if (PageAnon(page)) |
| 433 | md->anon++; |
| 434 | md->node[page_to_nid(page)]++; |
| 435 | } |
Hugh Dickins | deceb6c | 2005-10-29 18:16:33 -0700 | [diff] [blame] | 436 | cond_resched(); |
Christoph Lameter | 6e21c8f | 2005-09-03 15:54:45 -0700 | [diff] [blame] | 437 | } |
Christoph Lameter | 6e21c8f | 2005-09-03 15:54:45 -0700 | [diff] [blame] | 438 | return md; |
| 439 | } |
| 440 | |
| 441 | static int show_numa_map(struct seq_file *m, void *v) |
| 442 | { |
| 443 | struct task_struct *task = m->private; |
| 444 | struct vm_area_struct *vma = v; |
| 445 | struct mempolicy *pol; |
| 446 | struct numa_maps *md; |
| 447 | struct zone **z; |
| 448 | int n; |
| 449 | int first; |
| 450 | |
| 451 | if (!vma->vm_mm) |
| 452 | return 0; |
| 453 | |
| 454 | md = get_numa_maps(vma); |
| 455 | if (!md) |
| 456 | return 0; |
| 457 | |
| 458 | seq_printf(m, "%08lx", vma->vm_start); |
| 459 | pol = get_vma_policy(task, vma, vma->vm_start); |
| 460 | /* Print policy */ |
| 461 | switch (pol->policy) { |
| 462 | case MPOL_PREFERRED: |
| 463 | seq_printf(m, " prefer=%d", pol->v.preferred_node); |
| 464 | break; |
| 465 | case MPOL_BIND: |
| 466 | seq_printf(m, " bind={"); |
| 467 | first = 1; |
| 468 | for (z = pol->v.zonelist->zones; *z; z++) { |
| 469 | |
| 470 | if (!first) |
| 471 | seq_putc(m, ','); |
| 472 | else |
| 473 | first = 0; |
| 474 | seq_printf(m, "%d/%s", (*z)->zone_pgdat->node_id, |
| 475 | (*z)->name); |
| 476 | } |
| 477 | seq_putc(m, '}'); |
| 478 | break; |
| 479 | case MPOL_INTERLEAVE: |
| 480 | seq_printf(m, " interleave={"); |
| 481 | first = 1; |
| 482 | for_each_node(n) { |
Andi Kleen | dfcd3c0 | 2005-10-29 18:15:48 -0700 | [diff] [blame] | 483 | if (node_isset(n, pol->v.nodes)) { |
Christoph Lameter | 6e21c8f | 2005-09-03 15:54:45 -0700 | [diff] [blame] | 484 | if (!first) |
| 485 | seq_putc(m,','); |
| 486 | else |
| 487 | first = 0; |
| 488 | seq_printf(m, "%d",n); |
| 489 | } |
| 490 | } |
| 491 | seq_putc(m, '}'); |
| 492 | break; |
| 493 | default: |
| 494 | seq_printf(m," default"); |
| 495 | break; |
| 496 | } |
| 497 | seq_printf(m, " MaxRef=%lu Pages=%lu Mapped=%lu", |
| 498 | md->mapcount_max, md->pages, md->mapped); |
| 499 | if (md->anon) |
| 500 | seq_printf(m," Anon=%lu",md->anon); |
| 501 | |
| 502 | for_each_online_node(n) { |
| 503 | if (md->node[n]) |
| 504 | seq_printf(m, " N%d=%lu", n, md->node[n]); |
| 505 | } |
| 506 | seq_putc(m, '\n'); |
| 507 | kfree(md); |
| 508 | if (m->count < m->size) /* vma is copied successfully */ |
| 509 | m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0; |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | struct seq_operations proc_pid_numa_maps_op = { |
| 514 | .start = m_start, |
| 515 | .next = m_next, |
| 516 | .stop = m_stop, |
| 517 | .show = show_numa_map |
| 518 | }; |
| 519 | #endif |