diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/proc/task_nommu.c')
-rw-r--r-- | ANDROID_3.4.5/fs/proc/task_nommu.c | 318 |
1 files changed, 0 insertions, 318 deletions
diff --git a/ANDROID_3.4.5/fs/proc/task_nommu.c b/ANDROID_3.4.5/fs/proc/task_nommu.c deleted file mode 100644 index 74fe164d..00000000 --- a/ANDROID_3.4.5/fs/proc/task_nommu.c +++ /dev/null @@ -1,318 +0,0 @@ - -#include <linux/mm.h> -#include <linux/file.h> -#include <linux/fdtable.h> -#include <linux/fs_struct.h> -#include <linux/mount.h> -#include <linux/ptrace.h> -#include <linux/slab.h> -#include <linux/seq_file.h> -#include "internal.h" - -/* - * Logic: we've got two memory sums for each process, "shared", and - * "non-shared". Shared memory may get counted more than once, for - * each process that owns it. Non-shared memory is counted - * accurately. - */ -void task_mem(struct seq_file *m, struct mm_struct *mm) -{ - struct vm_area_struct *vma; - struct vm_region *region; - struct rb_node *p; - unsigned long bytes = 0, sbytes = 0, slack = 0, size; - - down_read(&mm->mmap_sem); - for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) { - vma = rb_entry(p, struct vm_area_struct, vm_rb); - - bytes += kobjsize(vma); - - region = vma->vm_region; - if (region) { - size = kobjsize(region); - size += region->vm_end - region->vm_start; - } else { - size = vma->vm_end - vma->vm_start; - } - - if (atomic_read(&mm->mm_count) > 1 || - vma->vm_flags & VM_MAYSHARE) { - sbytes += size; - } else { - bytes += size; - if (region) - slack = region->vm_end - vma->vm_end; - } - } - - if (atomic_read(&mm->mm_count) > 1) - sbytes += kobjsize(mm); - else - bytes += kobjsize(mm); - - if (current->fs && current->fs->users > 1) - sbytes += kobjsize(current->fs); - else - bytes += kobjsize(current->fs); - - if (current->files && atomic_read(¤t->files->count) > 1) - sbytes += kobjsize(current->files); - else - bytes += kobjsize(current->files); - - if (current->sighand && atomic_read(¤t->sighand->count) > 1) - sbytes += kobjsize(current->sighand); - else - bytes += kobjsize(current->sighand); - - bytes += kobjsize(current); /* includes kernel stack */ - - seq_printf(m, - "Mem:\t%8lu bytes\n" - "Slack:\t%8lu bytes\n" - "Shared:\t%8lu bytes\n", - bytes, slack, sbytes); - - up_read(&mm->mmap_sem); -} - -unsigned long task_vsize(struct mm_struct *mm) -{ - struct vm_area_struct *vma; - struct rb_node *p; - unsigned long vsize = 0; - - down_read(&mm->mmap_sem); - for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) { - vma = rb_entry(p, struct vm_area_struct, vm_rb); - vsize += vma->vm_end - vma->vm_start; - } - up_read(&mm->mmap_sem); - return vsize; -} - -unsigned long task_statm(struct mm_struct *mm, - unsigned long *shared, unsigned long *text, - unsigned long *data, unsigned long *resident) -{ - struct vm_area_struct *vma; - struct vm_region *region; - struct rb_node *p; - unsigned long size = kobjsize(mm); - - down_read(&mm->mmap_sem); - for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) { - vma = rb_entry(p, struct vm_area_struct, vm_rb); - size += kobjsize(vma); - region = vma->vm_region; - if (region) { - size += kobjsize(region); - size += region->vm_end - region->vm_start; - } - } - - *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) - >> PAGE_SHIFT; - *data = (PAGE_ALIGN(mm->start_stack) - (mm->start_data & PAGE_MASK)) - >> PAGE_SHIFT; - up_read(&mm->mmap_sem); - size >>= PAGE_SHIFT; - size += *text + *data; - *resident = size; - return size; -} - -static void pad_len_spaces(struct seq_file *m, int len) -{ - len = 25 + sizeof(void*) * 6 - len; - if (len < 1) - len = 1; - seq_printf(m, "%*c", len, ' '); -} - -/* - * display a single VMA to a sequenced file - */ -static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma, - int is_pid) -{ - struct mm_struct *mm = vma->vm_mm; - struct proc_maps_private *priv = m->private; - unsigned long ino = 0; - struct file *file; - dev_t dev = 0; - int flags, len; - unsigned long long pgoff = 0; - - flags = vma->vm_flags; - file = vma->vm_file; - - if (file) { - struct inode *inode = vma->vm_file->f_path.dentry->d_inode; - dev = inode->i_sb->s_dev; - ino = inode->i_ino; - pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT; - } - - seq_printf(m, - "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", - vma->vm_start, - vma->vm_end, - flags & VM_READ ? 'r' : '-', - flags & VM_WRITE ? 'w' : '-', - flags & VM_EXEC ? 'x' : '-', - flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p', - pgoff, - MAJOR(dev), MINOR(dev), ino, &len); - - if (file) { - pad_len_spaces(m, len); - seq_path(m, &file->f_path, ""); - } else if (mm) { - pid_t tid = vm_is_stack(priv->task, vma, is_pid); - - if (tid != 0) { - pad_len_spaces(m, len); - /* - * Thread stack in /proc/PID/task/TID/maps or - * the main process stack. - */ - if (!is_pid || (vma->vm_start <= mm->start_stack && - vma->vm_end >= mm->start_stack)) - seq_printf(m, "[stack]"); - else - seq_printf(m, "[stack:%d]", tid); - } - } - - seq_putc(m, '\n'); - return 0; -} - -/* - * display mapping lines for a particular process's /proc/pid/maps - */ -static int show_map(struct seq_file *m, void *_p, int is_pid) -{ - struct rb_node *p = _p; - - return nommu_vma_show(m, rb_entry(p, struct vm_area_struct, vm_rb), - is_pid); -} - -static int show_pid_map(struct seq_file *m, void *_p) -{ - return show_map(m, _p, 1); -} - -static int show_tid_map(struct seq_file *m, void *_p) -{ - return show_map(m, _p, 0); -} - -static void *m_start(struct seq_file *m, loff_t *pos) -{ - struct proc_maps_private *priv = m->private; - struct mm_struct *mm; - struct rb_node *p; - loff_t n = *pos; - - /* pin the task and mm whilst we play with them */ - priv->task = get_pid_task(priv->pid, PIDTYPE_PID); - if (!priv->task) - return ERR_PTR(-ESRCH); - - mm = mm_for_maps(priv->task); - if (!mm || IS_ERR(mm)) { - put_task_struct(priv->task); - priv->task = NULL; - return mm; - } - down_read(&mm->mmap_sem); - - /* start from the Nth VMA */ - for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) - if (n-- == 0) - return p; - return NULL; -} - -static void m_stop(struct seq_file *m, void *_vml) -{ - struct proc_maps_private *priv = m->private; - - if (priv->task) { - struct mm_struct *mm = priv->task->mm; - up_read(&mm->mmap_sem); - mmput(mm); - put_task_struct(priv->task); - } -} - -static void *m_next(struct seq_file *m, void *_p, loff_t *pos) -{ - struct rb_node *p = _p; - - (*pos)++; - return p ? rb_next(p) : NULL; -} - -static const struct seq_operations proc_pid_maps_ops = { - .start = m_start, - .next = m_next, - .stop = m_stop, - .show = show_pid_map -}; - -static const struct seq_operations proc_tid_maps_ops = { - .start = m_start, - .next = m_next, - .stop = m_stop, - .show = show_tid_map -}; - -static int maps_open(struct inode *inode, struct file *file, - const struct seq_operations *ops) -{ - struct proc_maps_private *priv; - int ret = -ENOMEM; - - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (priv) { - priv->pid = proc_pid(inode); - ret = seq_open(file, ops); - if (!ret) { - struct seq_file *m = file->private_data; - m->private = priv; - } else { - kfree(priv); - } - } - return ret; -} - -static int pid_maps_open(struct inode *inode, struct file *file) -{ - return maps_open(inode, file, &proc_pid_maps_ops); -} - -static int tid_maps_open(struct inode *inode, struct file *file) -{ - return maps_open(inode, file, &proc_tid_maps_ops); -} - -const struct file_operations proc_pid_maps_operations = { - .open = pid_maps_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_private, -}; - -const struct file_operations proc_tid_maps_operations = { - .open = tid_maps_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_private, -}; - |