2 #include <linux/hugetlb.h>
3 #include <linux/seq_file.h>
5 #include <asm/uaccess.h>
7 char *task_mem(struct mm_struct *mm, char *buffer)
9 unsigned long data = 0, stack = 0, exec = 0, lib = 0;
10 struct vm_area_struct *vma;
12 down_read(&mm->mmap_sem);
13 for (vma = mm->mmap; vma; vma = vma->vm_next) {
14 unsigned long len = (vma->vm_end - vma->vm_start) >> 10;
17 if (vma->vm_flags & VM_GROWSDOWN)
21 if (vma->vm_flags & VM_WRITE)
23 if (vma->vm_flags & VM_EXEC) {
25 if (vma->vm_flags & VM_EXECUTABLE)
30 buffer += sprintf(buffer,
45 mm->total_vm << (PAGE_SHIFT-10),
46 mm->locked_vm << (PAGE_SHIFT-10),
47 mm->rss << (PAGE_SHIFT-10),
49 exec - lib, lib, mm->start_brk, mm->brk, mm->start_stack
51 , mm->context.exec_limit
54 up_read(&mm->mmap_sem);
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 struct vm_area_struct *vma;
70 for (vma = mm->mmap; vma; vma = vma->vm_next) {
71 int pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
74 if (is_vm_hugetlb_page(vma)) {
75 if (!(vma->vm_flags & VM_DONTCOPY))
81 if (vma->vm_flags & VM_EXECUTABLE)
90 static int show_map(struct seq_file *m, void *v)
92 struct vm_area_struct *map = v;
93 struct file *file = map->vm_file;
94 int flags = map->vm_flags;
95 unsigned long ino = 0;
100 struct inode *inode = map->vm_file->f_dentry->d_inode;
101 dev = inode->i_sb->s_dev;
105 seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
108 flags & VM_READ ? 'r' : '-',
109 flags & VM_WRITE ? 'w' : '-',
110 flags & VM_EXEC ? 'x' : '-',
111 flags & VM_MAYSHARE ? 's' : 'p',
112 map->vm_pgoff << PAGE_SHIFT,
113 MAJOR(dev), MINOR(dev), ino, &len);
116 len = 25 + sizeof(void*) * 6 - len;
119 seq_printf(m, "%*c", len, ' ');
120 seq_path(m, file->f_vfsmnt, file->f_dentry, "");
126 static void *m_start(struct seq_file *m, loff_t *pos)
128 struct task_struct *task = m->private;
129 struct mm_struct *mm = get_task_mm(task);
130 struct vm_area_struct * map;
136 down_read(&mm->mmap_sem);
141 up_read(&mm->mmap_sem);
144 map = get_gate_vma(task);
149 static void m_stop(struct seq_file *m, void *v)
151 struct task_struct *task = m->private;
152 struct vm_area_struct *map = v;
153 if (map && map != get_gate_vma(task)) {
154 struct mm_struct *mm = map->vm_mm;
155 up_read(&mm->mmap_sem);
160 static void *m_next(struct seq_file *m, void *v, loff_t *pos)
162 struct task_struct *task = m->private;
163 struct vm_area_struct *map = v;
168 if (map != get_gate_vma(task))
169 return get_gate_vma(task);
173 struct seq_operations proc_pid_maps_op = {