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fs/proc/task_mmu.c
39 KB
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#include <linux/mm.h> |
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#include <linux/vmacache.h> |
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#include <linux/hugetlb.h> |
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#include <linux/huge_mm.h> |
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#include <linux/mount.h> #include <linux/seq_file.h> |
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#include <linux/highmem.h> |
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#include <linux/ptrace.h> |
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#include <linux/slab.h> |
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#include <linux/pagemap.h> #include <linux/mempolicy.h> |
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#include <linux/rmap.h> |
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#include <linux/swap.h> #include <linux/swapops.h> |
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#include <linux/mmu_notifier.h> |
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|
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#include <asm/elf.h> #include <asm/uaccess.h> |
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#include <asm/tlbflush.h> |
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#include "internal.h" |
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void task_mem(struct seq_file *m, struct mm_struct *mm) |
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{ |
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unsigned long data, text, lib, swap; |
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unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss; /* * Note: to minimize their overhead, mm maintains hiwater_vm and * hiwater_rss only when about to *lower* total_vm or rss. Any * collector of these hiwater stats must therefore get total_vm * and rss too, which will usually be the higher. Barriers? not * worth the effort, such snapshots can always be inconsistent. */ hiwater_vm = total_vm = mm->total_vm; if (hiwater_vm < mm->hiwater_vm) hiwater_vm = mm->hiwater_vm; hiwater_rss = total_rss = get_mm_rss(mm); if (hiwater_rss < mm->hiwater_rss) hiwater_rss = mm->hiwater_rss; |
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data = mm->total_vm - mm->shared_vm - mm->stack_vm; text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10; lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text; |
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swap = get_mm_counter(mm, MM_SWAPENTS); |
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seq_printf(m, |
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"VmPeak:\t%8lu kB " |
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"VmSize:\t%8lu kB " "VmLck:\t%8lu kB " |
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"VmPin:\t%8lu kB " |
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"VmHWM:\t%8lu kB " |
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"VmRSS:\t%8lu kB " "VmData:\t%8lu kB " "VmStk:\t%8lu kB " "VmExe:\t%8lu kB " "VmLib:\t%8lu kB " |
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"VmPTE:\t%8lu kB " "VmSwap:\t%8lu kB ", |
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hiwater_vm << (PAGE_SHIFT-10), |
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total_vm << (PAGE_SHIFT-10), |
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mm->locked_vm << (PAGE_SHIFT-10), |
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mm->pinned_vm << (PAGE_SHIFT-10), |
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hiwater_rss << (PAGE_SHIFT-10), total_rss << (PAGE_SHIFT-10), |
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data << (PAGE_SHIFT-10), mm->stack_vm << (PAGE_SHIFT-10), text, lib, |
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(PTRS_PER_PTE * sizeof(pte_t) * atomic_long_read(&mm->nr_ptes)) >> 10, |
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swap << (PAGE_SHIFT-10)); |
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} unsigned long task_vsize(struct mm_struct *mm) { return PAGE_SIZE * mm->total_vm; } |
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unsigned long task_statm(struct mm_struct *mm, unsigned long *shared, unsigned long *text, unsigned long *data, unsigned long *resident) |
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{ |
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*shared = get_mm_counter(mm, MM_FILEPAGES); |
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*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> PAGE_SHIFT; *data = mm->total_vm - mm->shared_vm; |
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*resident = *shared + get_mm_counter(mm, MM_ANONPAGES); |
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return mm->total_vm; } |
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#ifdef CONFIG_NUMA /* |
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* Save get_task_policy() for show_numa_map(). |
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*/ static void hold_task_mempolicy(struct proc_maps_private *priv) { struct task_struct *task = priv->task; task_lock(task); |
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priv->task_mempolicy = get_task_policy(task); |
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mpol_get(priv->task_mempolicy); task_unlock(task); } static void release_task_mempolicy(struct proc_maps_private *priv) { mpol_put(priv->task_mempolicy); } #else static void hold_task_mempolicy(struct proc_maps_private *priv) { } static void release_task_mempolicy(struct proc_maps_private *priv) { } #endif |
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static void vma_stop(struct proc_maps_private *priv) |
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{ |
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struct mm_struct *mm = priv->mm; release_task_mempolicy(priv); up_read(&mm->mmap_sem); mmput(mm); |
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} |
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|
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static struct vm_area_struct * m_next_vma(struct proc_maps_private *priv, struct vm_area_struct *vma) { if (vma == priv->tail_vma) return NULL; return vma->vm_next ?: priv->tail_vma; } |
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static void m_cache_vma(struct seq_file *m, struct vm_area_struct *vma) { if (m->count < m->size) /* vma is copied successfully */ m->version = m_next_vma(m->private, vma) ? vma->vm_start : -1UL; } |
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static void *m_start(struct seq_file *m, loff_t *ppos) |
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{ |
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struct proc_maps_private *priv = m->private; |
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unsigned long last_addr = m->version; |
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struct mm_struct *mm; |
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struct vm_area_struct *vma; unsigned int pos = *ppos; |
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|
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/* See m_cache_vma(). Zero at the start or after lseek. */ if (last_addr == -1UL) return NULL; |
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priv->task = get_proc_task(priv->inode); |
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if (!priv->task) |
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return ERR_PTR(-ESRCH); |
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|
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mm = priv->mm; if (!mm || !atomic_inc_not_zero(&mm->mm_users)) return NULL; |
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|
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down_read(&mm->mmap_sem); |
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hold_task_mempolicy(priv); |
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priv->tail_vma = get_gate_vma(mm); |
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|
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if (last_addr) { vma = find_vma(mm, last_addr); if (vma && (vma = m_next_vma(priv, vma))) return vma; } m->version = 0; |
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if (pos < mm->map_count) { |
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for (vma = mm->mmap; pos; pos--) { m->version = vma->vm_start; |
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vma = vma->vm_next; |
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} |
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return vma; |
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} |
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|
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/* we do not bother to update m->version in this case */ |
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if (pos == mm->map_count && priv->tail_vma) return priv->tail_vma; |
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vma_stop(priv); return NULL; |
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} static void *m_next(struct seq_file *m, void *v, loff_t *pos) { struct proc_maps_private *priv = m->private; |
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struct vm_area_struct *next; |
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(*pos)++; |
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next = m_next_vma(priv, v); |
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if (!next) vma_stop(priv); return next; |
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} static void m_stop(struct seq_file *m, void *v) { struct proc_maps_private *priv = m->private; |
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|
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if (!IS_ERR_OR_NULL(v)) vma_stop(priv); |
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if (priv->task) { |
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put_task_struct(priv->task); |
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priv->task = NULL; } |
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} |
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static int proc_maps_open(struct inode *inode, struct file *file, const struct seq_operations *ops, int psize) { struct proc_maps_private *priv = __seq_open_private(file, ops, psize); if (!priv) return -ENOMEM; |
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priv->inode = inode; |
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priv->mm = proc_mem_open(inode, PTRACE_MODE_READ); if (IS_ERR(priv->mm)) { int err = PTR_ERR(priv->mm); seq_release_private(inode, file); return err; } |
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return 0; } |
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static int proc_map_release(struct inode *inode, struct file *file) { struct seq_file *seq = file->private_data; struct proc_maps_private *priv = seq->private; if (priv->mm) mmdrop(priv->mm); return seq_release_private(inode, file); } |
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static int do_maps_open(struct inode *inode, struct file *file, |
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const struct seq_operations *ops) |
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{ |
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return proc_maps_open(inode, file, ops, sizeof(struct proc_maps_private)); |
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} |
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|
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static pid_t pid_of_stack(struct proc_maps_private *priv, struct vm_area_struct *vma, bool is_pid) { struct inode *inode = priv->inode; struct task_struct *task; pid_t ret = 0; rcu_read_lock(); task = pid_task(proc_pid(inode), PIDTYPE_PID); if (task) { task = task_of_stack(task, vma, is_pid); if (task) ret = task_pid_nr_ns(task, inode->i_sb->s_fs_info); } rcu_read_unlock(); return ret; } |
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static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) |
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{ |
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struct mm_struct *mm = vma->vm_mm; struct file *file = vma->vm_file; |
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struct proc_maps_private *priv = m->private; |
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vm_flags_t flags = vma->vm_flags; |
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unsigned long ino = 0; |
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unsigned long long pgoff = 0; |
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unsigned long start, end; |
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dev_t dev = 0; |
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const char *name = NULL; |
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if (file) { |
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struct inode *inode = file_inode(vma->vm_file); |
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dev = inode->i_sb->s_dev; ino = inode->i_ino; |
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pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT; |
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} |
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/* We don't show the stack guard page in /proc/maps */ start = vma->vm_start; |
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if (stack_guard_page_start(vma, start)) start += PAGE_SIZE; end = vma->vm_end; if (stack_guard_page_end(vma, end)) end -= PAGE_SIZE; |
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|
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seq_setwidth(m, 25 + sizeof(void *) * 6 - 1); seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ", |
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start, |
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end, |
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flags & VM_READ ? 'r' : '-', flags & VM_WRITE ? 'w' : '-', flags & VM_EXEC ? 'x' : '-', flags & VM_MAYSHARE ? 's' : 'p', |
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pgoff, |
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MAJOR(dev), MINOR(dev), ino); |
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/* * Print the dentry name for named mappings, and a * special [heap] marker for the heap: */ |
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if (file) { |
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seq_pad(m, ' '); |
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seq_path(m, &file->f_path, " "); |
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goto done; } |
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if (vma->vm_ops && vma->vm_ops->name) { name = vma->vm_ops->name(vma); if (name) goto done; } |
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name = arch_vma_name(vma); if (!name) { pid_t tid; if (!mm) { name = "[vdso]"; goto done; } if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { name = "[heap]"; goto done; } |
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tid = pid_of_stack(priv, vma, is_pid); |
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if (tid != 0) { /* * 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)) { name = "[stack]"; |
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} else { |
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/* Thread stack in /proc/PID/maps */ |
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seq_pad(m, ' '); |
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seq_printf(m, "[stack:%d]", tid); |
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} |
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} |
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} done: if (name) { |
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seq_pad(m, ' '); |
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seq_puts(m, name); |
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} seq_putc(m, ' '); |
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} |
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static int show_map(struct seq_file *m, void *v, int is_pid) |
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{ |
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show_map_vma(m, v, is_pid); |
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m_cache_vma(m, v); |
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return 0; } |
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static int show_pid_map(struct seq_file *m, void *v) { return show_map(m, v, 1); } static int show_tid_map(struct seq_file *m, void *v) { return show_map(m, v, 0); } |
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static const struct seq_operations proc_pid_maps_op = { |
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.start = m_start, .next = m_next, .stop = m_stop, |
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.show = show_pid_map }; static const struct seq_operations proc_tid_maps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_tid_map |
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}; |
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static int pid_maps_open(struct inode *inode, struct file *file) |
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{ return do_maps_open(inode, file, &proc_pid_maps_op); } |
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static int tid_maps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_tid_maps_op); } const struct file_operations proc_pid_maps_operations = { .open = pid_maps_open, .read = seq_read, .llseek = seq_lseek, |
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.release = proc_map_release, |
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}; const struct file_operations proc_tid_maps_operations = { .open = tid_maps_open, |
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.read = seq_read, .llseek = seq_lseek, |
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.release = proc_map_release, |
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}; /* * Proportional Set Size(PSS): my share of RSS. * * PSS of a process is the count of pages it has in memory, where each * page is divided by the number of processes sharing it. So if a * process has 1000 pages all to itself, and 1000 shared with one other * process, its PSS will be 1500. * * To keep (accumulated) division errors low, we adopt a 64bit * fixed-point pss counter to minimize division errors. So (pss >> * PSS_SHIFT) would be the real byte count. * * A shift of 12 before division means (assuming 4K page size): * - 1M 3-user-pages add up to 8KB errors; * - supports mapcount up to 2^24, or 16M; * - supports PSS up to 2^52 bytes, or 4PB. */ #define PSS_SHIFT 12 |
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#ifdef CONFIG_PROC_PAGE_MONITOR |
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struct mem_size_stats { |
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struct vm_area_struct *vma; unsigned long resident; unsigned long shared_clean; unsigned long shared_dirty; unsigned long private_clean; unsigned long private_dirty; unsigned long referenced; |
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unsigned long anonymous; |
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unsigned long anonymous_thp; |
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unsigned long swap; |
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unsigned long nonlinear; |
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u64 pss; }; |
c164e038e mm: fix huge zero... |
440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 |
static void smaps_account(struct mem_size_stats *mss, struct page *page, unsigned long size, bool young, bool dirty) { int mapcount; if (PageAnon(page)) mss->anonymous += size; mss->resident += size; /* Accumulate the size in pages that have been accessed. */ if (young || PageReferenced(page)) mss->referenced += size; mapcount = page_mapcount(page); if (mapcount >= 2) { u64 pss_delta; if (dirty || PageDirty(page)) mss->shared_dirty += size; else mss->shared_clean += size; pss_delta = (u64)size << PSS_SHIFT; do_div(pss_delta, mapcount); mss->pss += pss_delta; } else { if (dirty || PageDirty(page)) mss->private_dirty += size; else mss->private_clean += size; mss->pss += (u64)size << PSS_SHIFT; } } |
ae11c4d9f smaps: break out ... |
471 |
|
c164e038e mm: fix huge zero... |
472 473 |
static void smaps_pte_entry(pte_t *pte, unsigned long addr, struct mm_walk *walk) |
ae11c4d9f smaps: break out ... |
474 475 476 |
{ struct mem_size_stats *mss = walk->private; struct vm_area_struct *vma = mss->vma; |
bca155437 proc/smaps: show ... |
477 |
pgoff_t pgoff = linear_page_index(vma, addr); |
b1d4d9e0c proc/smaps: caref... |
478 |
struct page *page = NULL; |
ae11c4d9f smaps: break out ... |
479 |
|
c164e038e mm: fix huge zero... |
480 481 482 483 |
if (pte_present(*pte)) { page = vm_normal_page(vma, addr, *pte); } else if (is_swap_pte(*pte)) { swp_entry_t swpent = pte_to_swp_entry(*pte); |
ae11c4d9f smaps: break out ... |
484 |
|
b1d4d9e0c proc/smaps: caref... |
485 |
if (!non_swap_entry(swpent)) |
c164e038e mm: fix huge zero... |
486 |
mss->swap += PAGE_SIZE; |
b1d4d9e0c proc/smaps: caref... |
487 488 |
else if (is_migration_entry(swpent)) page = migration_entry_to_page(swpent); |
c164e038e mm: fix huge zero... |
489 490 491 |
} else if (pte_file(*pte)) { if (pte_to_pgoff(*pte) != pgoff) mss->nonlinear += PAGE_SIZE; |
b1d4d9e0c proc/smaps: caref... |
492 |
} |
ae11c4d9f smaps: break out ... |
493 |
|
ae11c4d9f smaps: break out ... |
494 495 |
if (!page) return; |
bca155437 proc/smaps: show ... |
496 |
if (page->index != pgoff) |
c164e038e mm: fix huge zero... |
497 |
mss->nonlinear += PAGE_SIZE; |
bca155437 proc/smaps: show ... |
498 |
|
c164e038e mm: fix huge zero... |
499 |
smaps_account(mss, page, PAGE_SIZE, pte_young(*pte), pte_dirty(*pte)); |
ae11c4d9f smaps: break out ... |
500 |
} |
c164e038e mm: fix huge zero... |
501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 |
#ifdef CONFIG_TRANSPARENT_HUGEPAGE static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, struct mm_walk *walk) { struct mem_size_stats *mss = walk->private; struct vm_area_struct *vma = mss->vma; struct page *page; /* FOLL_DUMP will return -EFAULT on huge zero page */ page = follow_trans_huge_pmd(vma, addr, pmd, FOLL_DUMP); if (IS_ERR_OR_NULL(page)) return; mss->anonymous_thp += HPAGE_PMD_SIZE; smaps_account(mss, page, HPAGE_PMD_SIZE, pmd_young(*pmd), pmd_dirty(*pmd)); } #else static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, struct mm_walk *walk) { } #endif |
b3ae5acbb maps4: use pagewa... |
523 |
static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, |
2165009bd pagemap: pass mm ... |
524 |
struct mm_walk *walk) |
e070ad49f [PATCH] add /proc... |
525 |
{ |
2165009bd pagemap: pass mm ... |
526 |
struct mem_size_stats *mss = walk->private; |
b3ae5acbb maps4: use pagewa... |
527 |
struct vm_area_struct *vma = mss->vma; |
ae11c4d9f smaps: break out ... |
528 |
pte_t *pte; |
705e87c0c [PATCH] mm: pte_o... |
529 |
spinlock_t *ptl; |
e070ad49f [PATCH] add /proc... |
530 |
|
bf929152e mm, thp: change p... |
531 |
if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { |
c164e038e mm: fix huge zero... |
532 |
smaps_pmd_entry(pmd, addr, walk); |
bf929152e mm, thp: change p... |
533 |
spin_unlock(ptl); |
025c5b245 thp: optimize awa... |
534 |
return 0; |
22e057c59 smaps: teach smap... |
535 |
} |
1a5a9906d mm: thp: fix pmd_... |
536 537 538 |
if (pmd_trans_unstable(pmd)) return 0; |
22e057c59 smaps: teach smap... |
539 540 541 542 543 |
/* * The mmap_sem held all the way back in m_start() is what * keeps khugepaged out of here and from collapsing things * in here. */ |
705e87c0c [PATCH] mm: pte_o... |
544 |
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); |
ae11c4d9f smaps: break out ... |
545 |
for (; addr != end; pte++, addr += PAGE_SIZE) |
c164e038e mm: fix huge zero... |
546 |
smaps_pte_entry(pte, addr, walk); |
705e87c0c [PATCH] mm: pte_o... |
547 548 |
pte_unmap_unlock(pte - 1, ptl); cond_resched(); |
b3ae5acbb maps4: use pagewa... |
549 |
return 0; |
e070ad49f [PATCH] add /proc... |
550 |
} |
834f82e2a procfs: add VmFla... |
551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 |
static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) { /* * Don't forget to update Documentation/ on changes. */ static const char mnemonics[BITS_PER_LONG][2] = { /* * In case if we meet a flag we don't know about. */ [0 ... (BITS_PER_LONG-1)] = "??", [ilog2(VM_READ)] = "rd", [ilog2(VM_WRITE)] = "wr", [ilog2(VM_EXEC)] = "ex", [ilog2(VM_SHARED)] = "sh", [ilog2(VM_MAYREAD)] = "mr", [ilog2(VM_MAYWRITE)] = "mw", [ilog2(VM_MAYEXEC)] = "me", [ilog2(VM_MAYSHARE)] = "ms", [ilog2(VM_GROWSDOWN)] = "gd", [ilog2(VM_PFNMAP)] = "pf", [ilog2(VM_DENYWRITE)] = "dw", |
4aae7e436 x86, mpx: Introdu... |
573 574 575 |
#ifdef CONFIG_X86_INTEL_MPX [ilog2(VM_MPX)] = "mp", #endif |
834f82e2a procfs: add VmFla... |
576 577 578 579 580 581 582 583 584 585 586 587 |
[ilog2(VM_LOCKED)] = "lo", [ilog2(VM_IO)] = "io", [ilog2(VM_SEQ_READ)] = "sr", [ilog2(VM_RAND_READ)] = "rr", [ilog2(VM_DONTCOPY)] = "dc", [ilog2(VM_DONTEXPAND)] = "de", [ilog2(VM_ACCOUNT)] = "ac", [ilog2(VM_NORESERVE)] = "nr", [ilog2(VM_HUGETLB)] = "ht", [ilog2(VM_NONLINEAR)] = "nl", [ilog2(VM_ARCH_1)] = "ar", [ilog2(VM_DONTDUMP)] = "dd", |
ec8e41aec /proc/pid/smaps: ... |
588 589 590 |
#ifdef CONFIG_MEM_SOFT_DIRTY [ilog2(VM_SOFTDIRTY)] = "sd", #endif |
834f82e2a procfs: add VmFla... |
591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 |
[ilog2(VM_MIXEDMAP)] = "mm", [ilog2(VM_HUGEPAGE)] = "hg", [ilog2(VM_NOHUGEPAGE)] = "nh", [ilog2(VM_MERGEABLE)] = "mg", }; size_t i; seq_puts(m, "VmFlags: "); for (i = 0; i < BITS_PER_LONG; i++) { if (vma->vm_flags & (1UL << i)) { seq_printf(m, "%c%c ", mnemonics[i][0], mnemonics[i][1]); } } seq_putc(m, ' '); } |
b76437579 procfs: mark thre... |
608 |
static int show_smap(struct seq_file *m, void *v, int is_pid) |
e070ad49f [PATCH] add /proc... |
609 610 |
{ struct vm_area_struct *vma = v; |
e070ad49f [PATCH] add /proc... |
611 |
struct mem_size_stats mss; |
2165009bd pagemap: pass mm ... |
612 613 614 615 616 |
struct mm_walk smaps_walk = { .pmd_entry = smaps_pte_range, .mm = vma->vm_mm, .private = &mss, }; |
e070ad49f [PATCH] add /proc... |
617 618 |
memset(&mss, 0, sizeof mss); |
b3ae5acbb maps4: use pagewa... |
619 |
mss.vma = vma; |
d82ef020c proc: pagemap: Ho... |
620 |
/* mmap_sem is held in m_start */ |
5ddfae16b [PATCH] smaps: hu... |
621 |
if (vma->vm_mm && !is_vm_hugetlb_page(vma)) |
2165009bd pagemap: pass mm ... |
622 |
walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk); |
4752c3697 maps4: simplify i... |
623 |
|
b76437579 procfs: mark thre... |
624 |
show_map_vma(m, vma, is_pid); |
4752c3697 maps4: simplify i... |
625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 |
seq_printf(m, "Size: %8lu kB " "Rss: %8lu kB " "Pss: %8lu kB " "Shared_Clean: %8lu kB " "Shared_Dirty: %8lu kB " "Private_Clean: %8lu kB " "Private_Dirty: %8lu kB " |
214e471ff smaps: account sw... |
641 642 |
"Referenced: %8lu kB " |
b40d4f84b /proc/pid/smaps: ... |
643 644 |
"Anonymous: %8lu kB " |
4031a219d smaps: have smaps... |
645 646 |
"AnonHugePages: %8lu kB " |
08fba6998 mm: report the pa... |
647 648 |
"Swap: %8lu kB " |
3340289dd mm: report the MM... |
649 650 |
"KernelPageSize: %8lu kB " |
2d90508f6 mm: smaps: export... |
651 652 653 654 |
"MMUPageSize: %8lu kB " "Locked: %8lu kB ", |
4752c3697 maps4: simplify i... |
655 656 657 658 659 660 661 |
(vma->vm_end - vma->vm_start) >> 10, mss.resident >> 10, (unsigned long)(mss.pss >> (10 + PSS_SHIFT)), mss.shared_clean >> 10, mss.shared_dirty >> 10, mss.private_clean >> 10, mss.private_dirty >> 10, |
214e471ff smaps: account sw... |
662 |
mss.referenced >> 10, |
b40d4f84b /proc/pid/smaps: ... |
663 |
mss.anonymous >> 10, |
4031a219d smaps: have smaps... |
664 |
mss.anonymous_thp >> 10, |
08fba6998 mm: report the pa... |
665 |
mss.swap >> 10, |
3340289dd mm: report the MM... |
666 |
vma_kernel_pagesize(vma) >> 10, |
2d90508f6 mm: smaps: export... |
667 668 669 |
vma_mmu_pagesize(vma) >> 10, (vma->vm_flags & VM_LOCKED) ? (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0); |
4752c3697 maps4: simplify i... |
670 |
|
bca155437 proc/smaps: show ... |
671 672 673 674 |
if (vma->vm_flags & VM_NONLINEAR) seq_printf(m, "Nonlinear: %8lu kB ", mss.nonlinear >> 10); |
834f82e2a procfs: add VmFla... |
675 |
show_smap_vma_flags(m, vma); |
b8c20a9b8 fs/proc/task_mmu.... |
676 |
m_cache_vma(m, vma); |
7c88db0cb proc: fix vma dis... |
677 |
return 0; |
e070ad49f [PATCH] add /proc... |
678 |
} |
b76437579 procfs: mark thre... |
679 680 681 682 683 684 685 686 687 |
static int show_pid_smap(struct seq_file *m, void *v) { return show_smap(m, v, 1); } static int show_tid_smap(struct seq_file *m, void *v) { return show_smap(m, v, 0); } |
03a44825b procfs: constify ... |
688 |
static const struct seq_operations proc_pid_smaps_op = { |
a6198797c maps4: regroup ta... |
689 690 691 |
.start = m_start, .next = m_next, .stop = m_stop, |
b76437579 procfs: mark thre... |
692 693 694 695 696 697 698 699 |
.show = show_pid_smap }; static const struct seq_operations proc_tid_smaps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_tid_smap |
a6198797c maps4: regroup ta... |
700 |
}; |
b76437579 procfs: mark thre... |
701 |
static int pid_smaps_open(struct inode *inode, struct file *file) |
a6198797c maps4: regroup ta... |
702 703 704 |
{ return do_maps_open(inode, file, &proc_pid_smaps_op); } |
b76437579 procfs: mark thre... |
705 706 707 708 709 710 711 712 713 |
static int tid_smaps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_tid_smaps_op); } const struct file_operations proc_pid_smaps_operations = { .open = pid_smaps_open, .read = seq_read, .llseek = seq_lseek, |
29a40ace8 fs/proc/task_mmu.... |
714 |
.release = proc_map_release, |
b76437579 procfs: mark thre... |
715 716 717 718 |
}; const struct file_operations proc_tid_smaps_operations = { .open = tid_smaps_open, |
a6198797c maps4: regroup ta... |
719 720 |
.read = seq_read, .llseek = seq_lseek, |
29a40ace8 fs/proc/task_mmu.... |
721 |
.release = proc_map_release, |
a6198797c maps4: regroup ta... |
722 |
}; |
541c237c0 pagemap: prepare ... |
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 |
/* * We do not want to have constant page-shift bits sitting in * pagemap entries and are about to reuse them some time soon. * * Here's the "migration strategy": * 1. when the system boots these bits remain what they are, * but a warning about future change is printed in log; * 2. once anyone clears soft-dirty bits via clear_refs file, * these flag is set to denote, that user is aware of the * new API and those page-shift bits change their meaning. * The respective warning is printed in dmesg; * 3. In a couple of releases we will remove all the mentions * of page-shift in pagemap entries. */ static bool soft_dirty_cleared __read_mostly; |
040fa0207 clear_refs: sanit... |
739 740 741 742 |
enum clear_refs_types { CLEAR_REFS_ALL = 1, CLEAR_REFS_ANON, CLEAR_REFS_MAPPED, |
0f8975ec4 mm: soft-dirty bi... |
743 |
CLEAR_REFS_SOFT_DIRTY, |
040fa0207 clear_refs: sanit... |
744 745 |
CLEAR_REFS_LAST, }; |
af9de7eb1 clear_refs: intro... |
746 747 |
struct clear_refs_private { struct vm_area_struct *vma; |
0f8975ec4 mm: soft-dirty bi... |
748 |
enum clear_refs_types type; |
af9de7eb1 clear_refs: intro... |
749 |
}; |
0f8975ec4 mm: soft-dirty bi... |
750 751 752 753 754 755 756 757 758 759 760 |
static inline void clear_soft_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *pte) { #ifdef CONFIG_MEM_SOFT_DIRTY /* * The soft-dirty tracker uses #PF-s to catch writes * to pages, so write-protect the pte as well. See the * Documentation/vm/soft-dirty.txt for full description * of how soft-dirty works. */ pte_t ptent = *pte; |
179ef71cb mm: save soft-dir... |
761 762 763 764 765 766 |
if (pte_present(ptent)) { ptent = pte_wrprotect(ptent); ptent = pte_clear_flags(ptent, _PAGE_SOFT_DIRTY); } else if (is_swap_pte(ptent)) { ptent = pte_swp_clear_soft_dirty(ptent); |
41bb3476b mm: save soft-dir... |
767 768 |
} else if (pte_file(ptent)) { ptent = pte_file_clear_soft_dirty(ptent); |
179ef71cb mm: save soft-dir... |
769 |
} |
0f8975ec4 mm: soft-dirty bi... |
770 771 772 |
set_pte_at(vma->vm_mm, addr, pte, ptent); #endif } |
a6198797c maps4: regroup ta... |
773 |
static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, |
2165009bd pagemap: pass mm ... |
774 |
unsigned long end, struct mm_walk *walk) |
a6198797c maps4: regroup ta... |
775 |
{ |
af9de7eb1 clear_refs: intro... |
776 777 |
struct clear_refs_private *cp = walk->private; struct vm_area_struct *vma = cp->vma; |
a6198797c maps4: regroup ta... |
778 779 780 |
pte_t *pte, ptent; spinlock_t *ptl; struct page *page; |
e180377f1 thp: change split... |
781 |
split_huge_page_pmd(vma, addr, pmd); |
1a5a9906d mm: thp: fix pmd_... |
782 783 |
if (pmd_trans_unstable(pmd)) return 0; |
033193275 pagewalk: only sp... |
784 |
|
a6198797c maps4: regroup ta... |
785 786 787 |
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); for (; addr != end; pte++, addr += PAGE_SIZE) { ptent = *pte; |
a6198797c maps4: regroup ta... |
788 |
|
0f8975ec4 mm: soft-dirty bi... |
789 790 791 792 |
if (cp->type == CLEAR_REFS_SOFT_DIRTY) { clear_soft_dirty(vma, addr, pte); continue; } |
179ef71cb mm: save soft-dir... |
793 794 |
if (!pte_present(ptent)) continue; |
a6198797c maps4: regroup ta... |
795 796 797 798 799 800 801 802 803 804 805 806 |
page = vm_normal_page(vma, addr, ptent); if (!page) continue; /* Clear accessed and referenced bits. */ ptep_test_and_clear_young(vma, addr, pte); ClearPageReferenced(page); } pte_unmap_unlock(pte - 1, ptl); cond_resched(); return 0; } |
f248dcb34 maps4: move clear... |
807 808 |
static ssize_t clear_refs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) |
b813e931b smaps: add clear_... |
809 |
{ |
f248dcb34 maps4: move clear... |
810 |
struct task_struct *task; |
fb92a4b06 fs/proc/task_mmu.... |
811 |
char buffer[PROC_NUMBUF]; |
f248dcb34 maps4: move clear... |
812 |
struct mm_struct *mm; |
b813e931b smaps: add clear_... |
813 |
struct vm_area_struct *vma; |
040fa0207 clear_refs: sanit... |
814 815 |
enum clear_refs_types type; int itype; |
0a8cb8e34 fs/proc: convert ... |
816 |
int rv; |
b813e931b smaps: add clear_... |
817 |
|
f248dcb34 maps4: move clear... |
818 819 820 821 822 |
memset(buffer, 0, sizeof(buffer)); if (count > sizeof(buffer) - 1) count = sizeof(buffer) - 1; if (copy_from_user(buffer, buf, count)) return -EFAULT; |
040fa0207 clear_refs: sanit... |
823 |
rv = kstrtoint(strstrip(buffer), 10, &itype); |
0a8cb8e34 fs/proc: convert ... |
824 825 |
if (rv < 0) return rv; |
040fa0207 clear_refs: sanit... |
826 827 |
type = (enum clear_refs_types)itype; if (type < CLEAR_REFS_ALL || type >= CLEAR_REFS_LAST) |
f248dcb34 maps4: move clear... |
828 |
return -EINVAL; |
541c237c0 pagemap: prepare ... |
829 830 831 |
if (type == CLEAR_REFS_SOFT_DIRTY) { soft_dirty_cleared = true; |
c86c97ff4 mm: softdirty: cl... |
832 833 834 835 |
pr_warn_once("The pagemap bits 55-60 has changed their meaning!" " See the linux/Documentation/vm/pagemap.txt for " "details. "); |
541c237c0 pagemap: prepare ... |
836 |
} |
496ad9aa8 new helper: file_... |
837 |
task = get_proc_task(file_inode(file)); |
f248dcb34 maps4: move clear... |
838 839 840 841 |
if (!task) return -ESRCH; mm = get_task_mm(task); if (mm) { |
af9de7eb1 clear_refs: intro... |
842 |
struct clear_refs_private cp = { |
0f8975ec4 mm: soft-dirty bi... |
843 |
.type = type, |
af9de7eb1 clear_refs: intro... |
844 |
}; |
20cbc9726 Fix clear_refs_wr... |
845 846 847 |
struct mm_walk clear_refs_walk = { .pmd_entry = clear_refs_pte_range, .mm = mm, |
af9de7eb1 clear_refs: intro... |
848 |
.private = &cp, |
20cbc9726 Fix clear_refs_wr... |
849 |
}; |
f248dcb34 maps4: move clear... |
850 |
down_read(&mm->mmap_sem); |
64e455079 mm: softdirty: en... |
851 852 853 854 855 856 857 858 859 860 861 862 863 |
if (type == CLEAR_REFS_SOFT_DIRTY) { for (vma = mm->mmap; vma; vma = vma->vm_next) { if (!(vma->vm_flags & VM_SOFTDIRTY)) continue; up_read(&mm->mmap_sem); down_write(&mm->mmap_sem); for (vma = mm->mmap; vma; vma = vma->vm_next) { vma->vm_flags &= ~VM_SOFTDIRTY; vma_set_page_prot(vma); } downgrade_write(&mm->mmap_sem); break; } |
0f8975ec4 mm: soft-dirty bi... |
864 |
mmu_notifier_invalidate_range_start(mm, 0, -1); |
64e455079 mm: softdirty: en... |
865 |
} |
2165009bd pagemap: pass mm ... |
866 |
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
af9de7eb1 clear_refs: intro... |
867 |
cp.vma = vma; |
398499d5f pagemap clear_ref... |
868 869 870 871 872 873 874 875 876 877 |
if (is_vm_hugetlb_page(vma)) continue; /* * Writing 1 to /proc/pid/clear_refs affects all pages. * * Writing 2 to /proc/pid/clear_refs only affects * Anonymous pages. * * Writing 3 to /proc/pid/clear_refs only affects file * mapped pages. |
c86c97ff4 mm: softdirty: cl... |
878 879 |
* * Writing 4 to /proc/pid/clear_refs affects all pages. |
398499d5f pagemap clear_ref... |
880 881 882 883 884 885 886 |
*/ if (type == CLEAR_REFS_ANON && vma->vm_file) continue; if (type == CLEAR_REFS_MAPPED && !vma->vm_file) continue; walk_page_range(vma->vm_start, vma->vm_end, &clear_refs_walk); |
2165009bd pagemap: pass mm ... |
887 |
} |
0f8975ec4 mm: soft-dirty bi... |
888 889 |
if (type == CLEAR_REFS_SOFT_DIRTY) mmu_notifier_invalidate_range_end(mm, 0, -1); |
f248dcb34 maps4: move clear... |
890 891 892 893 894 |
flush_tlb_mm(mm); up_read(&mm->mmap_sem); mmput(mm); } put_task_struct(task); |
fb92a4b06 fs/proc/task_mmu.... |
895 896 |
return count; |
b813e931b smaps: add clear_... |
897 |
} |
f248dcb34 maps4: move clear... |
898 899 |
const struct file_operations proc_clear_refs_operations = { .write = clear_refs_write, |
6038f373a llseek: automatic... |
900 |
.llseek = noop_llseek, |
f248dcb34 maps4: move clear... |
901 |
}; |
092b50bac pagemap: introduc... |
902 903 904 |
typedef struct { u64 pme; } pagemap_entry_t; |
85863e475 maps4: add /proc/... |
905 |
struct pagemapread { |
8c8296223 fs/proc/task_mmu.... |
906 |
int pos, len; /* units: PM_ENTRY_BYTES, not bytes */ |
092b50bac pagemap: introduc... |
907 |
pagemap_entry_t *buffer; |
2b0a9f017 pagemap: introduc... |
908 |
bool v2; |
85863e475 maps4: add /proc/... |
909 |
}; |
5aaabe831 pagemap: avoid sp... |
910 911 |
#define PAGEMAP_WALK_SIZE (PMD_SIZE) #define PAGEMAP_WALK_MASK (PMD_MASK) |
8c8296223 fs/proc/task_mmu.... |
912 |
#define PM_ENTRY_BYTES sizeof(pagemap_entry_t) |
f16278c67 Change pagemap ou... |
913 914 915 916 917 918 919 |
#define PM_STATUS_BITS 3 #define PM_STATUS_OFFSET (64 - PM_STATUS_BITS) #define PM_STATUS_MASK (((1LL << PM_STATUS_BITS) - 1) << PM_STATUS_OFFSET) #define PM_STATUS(nr) (((nr) << PM_STATUS_OFFSET) & PM_STATUS_MASK) #define PM_PSHIFT_BITS 6 #define PM_PSHIFT_OFFSET (PM_STATUS_OFFSET - PM_PSHIFT_BITS) #define PM_PSHIFT_MASK (((1LL << PM_PSHIFT_BITS) - 1) << PM_PSHIFT_OFFSET) |
2b0a9f017 pagemap: introduc... |
920 |
#define __PM_PSHIFT(x) (((u64) (x) << PM_PSHIFT_OFFSET) & PM_PSHIFT_MASK) |
f16278c67 Change pagemap ou... |
921 922 |
#define PM_PFRAME_MASK ((1LL << PM_PSHIFT_OFFSET) - 1) #define PM_PFRAME(x) ((x) & PM_PFRAME_MASK) |
2b0a9f017 pagemap: introduc... |
923 924 |
/* in "new" pagemap pshift bits are occupied with more status bits */ #define PM_STATUS2(v2, x) (__PM_PSHIFT(v2 ? x : PAGE_SHIFT)) |
f16278c67 Change pagemap ou... |
925 |
|
0f8975ec4 mm: soft-dirty bi... |
926 |
#define __PM_SOFT_DIRTY (1LL) |
f16278c67 Change pagemap ou... |
927 928 |
#define PM_PRESENT PM_STATUS(4LL) #define PM_SWAP PM_STATUS(2LL) |
052fb0d63 proc: report file... |
929 |
#define PM_FILE PM_STATUS(1LL) |
2b0a9f017 pagemap: introduc... |
930 |
#define PM_NOT_PRESENT(v2) PM_STATUS2(v2, 0) |
85863e475 maps4: add /proc/... |
931 |
#define PM_END_OF_BUFFER 1 |
092b50bac pagemap: introduc... |
932 933 934 935 936 937 |
static inline pagemap_entry_t make_pme(u64 val) { return (pagemap_entry_t) { .pme = val }; } static int add_to_pagemap(unsigned long addr, pagemap_entry_t *pme, |
85863e475 maps4: add /proc/... |
938 939 |
struct pagemapread *pm) { |
092b50bac pagemap: introduc... |
940 |
pm->buffer[pm->pos++] = *pme; |
d82ef020c proc: pagemap: Ho... |
941 |
if (pm->pos >= pm->len) |
aae8679b0 pagemap: fix bug ... |
942 |
return PM_END_OF_BUFFER; |
85863e475 maps4: add /proc/... |
943 944 945 946 |
return 0; } static int pagemap_pte_hole(unsigned long start, unsigned long end, |
2165009bd pagemap: pass mm ... |
947 |
struct mm_walk *walk) |
85863e475 maps4: add /proc/... |
948 |
{ |
2165009bd pagemap: pass mm ... |
949 |
struct pagemapread *pm = walk->private; |
68b5a6524 mm: softdirty: re... |
950 |
unsigned long addr = start; |
85863e475 maps4: add /proc/... |
951 |
int err = 0; |
092b50bac pagemap: introduc... |
952 |
|
68b5a6524 mm: softdirty: re... |
953 954 955 |
while (addr < end) { struct vm_area_struct *vma = find_vma(walk->mm, addr); pagemap_entry_t pme = make_pme(PM_NOT_PRESENT(pm->v2)); |
87e6d49a0 mm: softdirty: ad... |
956 957 |
/* End of address space hole, which we mark as non-present. */ unsigned long hole_end; |
68b5a6524 mm: softdirty: re... |
958 |
|
87e6d49a0 mm: softdirty: ad... |
959 960 961 962 963 964 965 966 967 |
if (vma) hole_end = min(end, vma->vm_start); else hole_end = end; for (; addr < hole_end; addr += PAGE_SIZE) { err = add_to_pagemap(addr, &pme, pm); if (err) goto out; |
68b5a6524 mm: softdirty: re... |
968 |
} |
87e6d49a0 mm: softdirty: ad... |
969 970 971 972 973 974 975 |
if (!vma) break; /* Addresses in the VMA. */ if (vma->vm_flags & VM_SOFTDIRTY) pme.pme |= PM_STATUS2(pm->v2, __PM_SOFT_DIRTY); for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) { |
68b5a6524 mm: softdirty: re... |
976 977 978 979 |
err = add_to_pagemap(addr, &pme, pm); if (err) goto out; } |
85863e475 maps4: add /proc/... |
980 |
} |
68b5a6524 mm: softdirty: re... |
981 |
out: |
85863e475 maps4: add /proc/... |
982 983 |
return err; } |
2b0a9f017 pagemap: introduc... |
984 |
static void pte_to_pagemap_entry(pagemap_entry_t *pme, struct pagemapread *pm, |
052fb0d63 proc: report file... |
985 |
struct vm_area_struct *vma, unsigned long addr, pte_t pte) |
85863e475 maps4: add /proc/... |
986 |
{ |
052fb0d63 proc: report file... |
987 988 |
u64 frame, flags; struct page *page = NULL; |
0f8975ec4 mm: soft-dirty bi... |
989 |
int flags2 = 0; |
85863e475 maps4: add /proc/... |
990 |
|
052fb0d63 proc: report file... |
991 992 993 994 |
if (pte_present(pte)) { frame = pte_pfn(pte); flags = PM_PRESENT; page = vm_normal_page(vma, addr, pte); |
e9cdd6e77 mm: /proc/pid/pag... |
995 996 |
if (pte_soft_dirty(pte)) flags2 |= __PM_SOFT_DIRTY; |
052fb0d63 proc: report file... |
997 |
} else if (is_swap_pte(pte)) { |
179ef71cb mm: save soft-dir... |
998 999 1000 1001 |
swp_entry_t entry; if (pte_swp_soft_dirty(pte)) flags2 |= __PM_SOFT_DIRTY; entry = pte_to_swp_entry(pte); |
052fb0d63 proc: report file... |
1002 1003 1004 1005 1006 1007 |
frame = swp_type(entry) | (swp_offset(entry) << MAX_SWAPFILES_SHIFT); flags = PM_SWAP; if (is_migration_entry(entry)) page = migration_entry_to_page(entry); } else { |
d9104d1ca mm: track vma cha... |
1008 1009 1010 |
if (vma->vm_flags & VM_SOFTDIRTY) flags2 |= __PM_SOFT_DIRTY; *pme = make_pme(PM_NOT_PRESENT(pm->v2) | PM_STATUS2(pm->v2, flags2)); |
052fb0d63 proc: report file... |
1011 1012 1013 1014 1015 |
return; } if (page && !PageAnon(page)) flags |= PM_FILE; |
e9cdd6e77 mm: /proc/pid/pag... |
1016 |
if ((vma->vm_flags & VM_SOFTDIRTY)) |
0f8975ec4 mm: soft-dirty bi... |
1017 |
flags2 |= __PM_SOFT_DIRTY; |
052fb0d63 proc: report file... |
1018 |
|
0f8975ec4 mm: soft-dirty bi... |
1019 |
*pme = make_pme(PM_PFRAME(frame) | PM_STATUS2(pm->v2, flags2) | flags); |
bcf8039ed pagemap: fix larg... |
1020 |
} |
5aaabe831 pagemap: avoid sp... |
1021 |
#ifdef CONFIG_TRANSPARENT_HUGEPAGE |
2b0a9f017 pagemap: introduc... |
1022 |
static void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, struct pagemapread *pm, |
0f8975ec4 mm: soft-dirty bi... |
1023 |
pmd_t pmd, int offset, int pmd_flags2) |
5aaabe831 pagemap: avoid sp... |
1024 |
{ |
5aaabe831 pagemap: avoid sp... |
1025 1026 1027 1028 1029 1030 |
/* * Currently pmd for thp is always present because thp can not be * swapped-out, migrated, or HWPOISONed (split in such cases instead.) * This if-check is just to prepare for future implementation. */ if (pmd_present(pmd)) |
092b50bac pagemap: introduc... |
1031 |
*pme = make_pme(PM_PFRAME(pmd_pfn(pmd) + offset) |
0f8975ec4 mm: soft-dirty bi... |
1032 |
| PM_STATUS2(pm->v2, pmd_flags2) | PM_PRESENT); |
16fbdce62 proc/pid/pagemap:... |
1033 |
else |
d9104d1ca mm: track vma cha... |
1034 |
*pme = make_pme(PM_NOT_PRESENT(pm->v2) | PM_STATUS2(pm->v2, pmd_flags2)); |
5aaabe831 pagemap: avoid sp... |
1035 1036 |
} #else |
2b0a9f017 pagemap: introduc... |
1037 |
static inline void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, struct pagemapread *pm, |
0f8975ec4 mm: soft-dirty bi... |
1038 |
pmd_t pmd, int offset, int pmd_flags2) |
5aaabe831 pagemap: avoid sp... |
1039 |
{ |
5aaabe831 pagemap: avoid sp... |
1040 1041 |
} #endif |
85863e475 maps4: add /proc/... |
1042 |
static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, |
2165009bd pagemap: pass mm ... |
1043 |
struct mm_walk *walk) |
85863e475 maps4: add /proc/... |
1044 |
{ |
bcf8039ed pagemap: fix larg... |
1045 |
struct vm_area_struct *vma; |
2165009bd pagemap: pass mm ... |
1046 |
struct pagemapread *pm = walk->private; |
bf929152e mm, thp: change p... |
1047 |
spinlock_t *ptl; |
85863e475 maps4: add /proc/... |
1048 1049 |
pte_t *pte; int err = 0; |
bcf8039ed pagemap: fix larg... |
1050 1051 |
/* find the first VMA at or above 'addr' */ vma = find_vma(walk->mm, addr); |
bf929152e mm, thp: change p... |
1052 |
if (vma && pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { |
0f8975ec4 mm: soft-dirty bi... |
1053 |
int pmd_flags2; |
d9104d1ca mm: track vma cha... |
1054 1055 1056 1057 |
if ((vma->vm_flags & VM_SOFTDIRTY) || pmd_soft_dirty(*pmd)) pmd_flags2 = __PM_SOFT_DIRTY; else pmd_flags2 = 0; |
025c5b245 thp: optimize awa... |
1058 1059 |
for (; addr != end; addr += PAGE_SIZE) { unsigned long offset; |
81d0fa623 mm: softdirty: un... |
1060 |
pagemap_entry_t pme; |
025c5b245 thp: optimize awa... |
1061 1062 1063 |
offset = (addr & ~PAGEMAP_WALK_MASK) >> PAGE_SHIFT; |
0f8975ec4 mm: soft-dirty bi... |
1064 |
thp_pmd_to_pagemap_entry(&pme, pm, *pmd, offset, pmd_flags2); |
092b50bac pagemap: introduc... |
1065 |
err = add_to_pagemap(addr, &pme, pm); |
025c5b245 thp: optimize awa... |
1066 1067 |
if (err) break; |
5aaabe831 pagemap: avoid sp... |
1068 |
} |
bf929152e mm, thp: change p... |
1069 |
spin_unlock(ptl); |
025c5b245 thp: optimize awa... |
1070 |
return err; |
5aaabe831 pagemap: avoid sp... |
1071 |
} |
45f83cefe mm: thp: fix up p... |
1072 1073 |
if (pmd_trans_unstable(pmd)) return 0; |
81d0fa623 mm: softdirty: un... |
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 |
while (1) { /* End of address space hole, which we mark as non-present. */ unsigned long hole_end; if (vma) hole_end = min(end, vma->vm_start); else hole_end = end; for (; addr < hole_end; addr += PAGE_SIZE) { pagemap_entry_t pme = make_pme(PM_NOT_PRESENT(pm->v2)); err = add_to_pagemap(addr, &pme, pm); if (err) return err; |
16fbdce62 proc/pid/pagemap:... |
1090 |
} |
bcf8039ed pagemap: fix larg... |
1091 |
|
81d0fa623 mm: softdirty: un... |
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 |
if (!vma || vma->vm_start >= end) break; /* * We can't possibly be in a hugetlb VMA. In general, * for a mm_walk with a pmd_entry and a hugetlb_entry, * the pmd_entry can only be called on addresses in a * hugetlb if the walk starts in a non-hugetlb VMA and * spans a hugepage VMA. Since pagemap_read walks are * PMD-sized and PMD-aligned, this will never be true. */ BUG_ON(is_vm_hugetlb_page(vma)); /* Addresses in the VMA. */ for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) { pagemap_entry_t pme; |
bcf8039ed pagemap: fix larg... |
1107 |
pte = pte_offset_map(pmd, addr); |
2b0a9f017 pagemap: introduc... |
1108 |
pte_to_pagemap_entry(&pme, pm, vma, addr, *pte); |
bcf8039ed pagemap: fix larg... |
1109 |
pte_unmap(pte); |
81d0fa623 mm: softdirty: un... |
1110 1111 1112 |
err = add_to_pagemap(addr, &pme, pm); if (err) return err; |
bcf8039ed pagemap: fix larg... |
1113 |
} |
81d0fa623 mm: softdirty: un... |
1114 1115 1116 1117 1118 |
if (addr == end) break; vma = find_vma(walk->mm, addr); |
85863e475 maps4: add /proc/... |
1119 1120 1121 1122 1123 1124 |
} cond_resched(); return err; } |
1a5cb8146 pagemap: add #ifd... |
1125 |
#ifdef CONFIG_HUGETLB_PAGE |
2b0a9f017 pagemap: introduc... |
1126 |
static void huge_pte_to_pagemap_entry(pagemap_entry_t *pme, struct pagemapread *pm, |
d9104d1ca mm: track vma cha... |
1127 |
pte_t pte, int offset, int flags2) |
5dc37642c mm hugetlb: add h... |
1128 |
{ |
5dc37642c mm hugetlb: add h... |
1129 |
if (pte_present(pte)) |
d9104d1ca mm: track vma cha... |
1130 1131 1132 |
*pme = make_pme(PM_PFRAME(pte_pfn(pte) + offset) | PM_STATUS2(pm->v2, flags2) | PM_PRESENT); |
16fbdce62 proc/pid/pagemap:... |
1133 |
else |
d9104d1ca mm: track vma cha... |
1134 1135 |
*pme = make_pme(PM_NOT_PRESENT(pm->v2) | PM_STATUS2(pm->v2, flags2)); |
5dc37642c mm hugetlb: add h... |
1136 |
} |
116354d17 pagemap: fix pfn ... |
1137 1138 1139 1140 |
/* This function walks within one hugetlb entry in the single call */ static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) |
5dc37642c mm hugetlb: add h... |
1141 |
{ |
5dc37642c mm hugetlb: add h... |
1142 |
struct pagemapread *pm = walk->private; |
d9104d1ca mm: track vma cha... |
1143 |
struct vm_area_struct *vma; |
5dc37642c mm hugetlb: add h... |
1144 |
int err = 0; |
d9104d1ca mm: track vma cha... |
1145 |
int flags2; |
16fbdce62 proc/pid/pagemap:... |
1146 |
pagemap_entry_t pme; |
5dc37642c mm hugetlb: add h... |
1147 |
|
d9104d1ca mm: track vma cha... |
1148 1149 1150 1151 1152 1153 1154 |
vma = find_vma(walk->mm, addr); WARN_ON_ONCE(!vma); if (vma && (vma->vm_flags & VM_SOFTDIRTY)) flags2 = __PM_SOFT_DIRTY; else flags2 = 0; |
5dc37642c mm hugetlb: add h... |
1155 |
for (; addr != end; addr += PAGE_SIZE) { |
116354d17 pagemap: fix pfn ... |
1156 |
int offset = (addr & ~hmask) >> PAGE_SHIFT; |
d9104d1ca mm: track vma cha... |
1157 |
huge_pte_to_pagemap_entry(&pme, pm, *pte, offset, flags2); |
092b50bac pagemap: introduc... |
1158 |
err = add_to_pagemap(addr, &pme, pm); |
5dc37642c mm hugetlb: add h... |
1159 1160 1161 1162 1163 1164 1165 1166 |
if (err) return err; } cond_resched(); return err; } |
1a5cb8146 pagemap: add #ifd... |
1167 |
#endif /* HUGETLB_PAGE */ |
5dc37642c mm hugetlb: add h... |
1168 |
|
85863e475 maps4: add /proc/... |
1169 1170 1171 |
/* * /proc/pid/pagemap - an array mapping virtual pages to pfns * |
f16278c67 Change pagemap ou... |
1172 1173 1174 |
* For each page in the address space, this file contains one 64-bit entry * consisting of the following: * |
052fb0d63 proc: report file... |
1175 |
* Bits 0-54 page frame number (PFN) if present |
f16278c67 Change pagemap ou... |
1176 |
* Bits 0-4 swap type if swapped |
052fb0d63 proc: report file... |
1177 |
* Bits 5-54 swap offset if swapped |
f16278c67 Change pagemap ou... |
1178 |
* Bits 55-60 page shift (page size = 1<<page shift) |
052fb0d63 proc: report file... |
1179 |
* Bit 61 page is file-page or shared-anon |
f16278c67 Change pagemap ou... |
1180 1181 1182 1183 1184 1185 |
* Bit 62 page swapped * Bit 63 page present * * If the page is not present but in swap, then the PFN contains an * encoding of the swap file number and the page's offset into the * swap. Unmapped pages return a null PFN. This allows determining |
85863e475 maps4: add /proc/... |
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 |
* precisely which pages are mapped (or in swap) and comparing mapped * pages between processes. * * Efficient users of this interface will use /proc/pid/maps to * determine which areas of memory are actually mapped and llseek to * skip over unmapped regions. */ static ssize_t pagemap_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { |
496ad9aa8 new helper: file_... |
1196 |
struct task_struct *task = get_proc_task(file_inode(file)); |
85863e475 maps4: add /proc/... |
1197 1198 |
struct mm_struct *mm; struct pagemapread pm; |
85863e475 maps4: add /proc/... |
1199 |
int ret = -ESRCH; |
ee1e6ab60 proc: fix /proc/*... |
1200 |
struct mm_walk pagemap_walk = {}; |
5d7e0d2bd Fix pagemap_read(... |
1201 1202 1203 1204 |
unsigned long src; unsigned long svpfn; unsigned long start_vaddr; unsigned long end_vaddr; |
d82ef020c proc: pagemap: Ho... |
1205 |
int copied = 0; |
85863e475 maps4: add /proc/... |
1206 1207 1208 |
if (!task) goto out; |
85863e475 maps4: add /proc/... |
1209 1210 |
ret = -EINVAL; /* file position must be aligned */ |
aae8679b0 pagemap: fix bug ... |
1211 |
if ((*ppos % PM_ENTRY_BYTES) || (count % PM_ENTRY_BYTES)) |
fb39380b8 pagemap: proper r... |
1212 |
goto out_task; |
85863e475 maps4: add /proc/... |
1213 1214 |
ret = 0; |
081617863 pagemap: require ... |
1215 1216 |
if (!count) goto out_task; |
541c237c0 pagemap: prepare ... |
1217 |
pm.v2 = soft_dirty_cleared; |
8c8296223 fs/proc/task_mmu.... |
1218 1219 |
pm.len = (PAGEMAP_WALK_SIZE >> PAGE_SHIFT); pm.buffer = kmalloc(pm.len * PM_ENTRY_BYTES, GFP_TEMPORARY); |
5d7e0d2bd Fix pagemap_read(... |
1220 |
ret = -ENOMEM; |
d82ef020c proc: pagemap: Ho... |
1221 |
if (!pm.buffer) |
98bc93e50 proc: fix pagemap... |
1222 |
goto out_task; |
e7dcd9990 proc: remove mm_f... |
1223 |
mm = mm_access(task, PTRACE_MODE_READ); |
98bc93e50 proc: fix pagemap... |
1224 1225 1226 |
ret = PTR_ERR(mm); if (!mm || IS_ERR(mm)) goto out_free; |
85863e475 maps4: add /proc/... |
1227 |
|
5d7e0d2bd Fix pagemap_read(... |
1228 1229 |
pagemap_walk.pmd_entry = pagemap_pte_range; pagemap_walk.pte_hole = pagemap_pte_hole; |
1a5cb8146 pagemap: add #ifd... |
1230 |
#ifdef CONFIG_HUGETLB_PAGE |
5dc37642c mm hugetlb: add h... |
1231 |
pagemap_walk.hugetlb_entry = pagemap_hugetlb_range; |
1a5cb8146 pagemap: add #ifd... |
1232 |
#endif |
5d7e0d2bd Fix pagemap_read(... |
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 |
pagemap_walk.mm = mm; pagemap_walk.private = ± src = *ppos; svpfn = src / PM_ENTRY_BYTES; start_vaddr = svpfn << PAGE_SHIFT; end_vaddr = TASK_SIZE_OF(task); /* watch out for wraparound */ if (svpfn > TASK_SIZE_OF(task) >> PAGE_SHIFT) start_vaddr = end_vaddr; /* * The odds are that this will stop walking way * before end_vaddr, because the length of the * user buffer is tracked in "pm", and the walk * will stop when we hit the end of the buffer. */ |
d82ef020c proc: pagemap: Ho... |
1251 1252 1253 1254 1255 1256 |
ret = 0; while (count && (start_vaddr < end_vaddr)) { int len; unsigned long end; pm.pos = 0; |
ea251c1d5 pagemap: set page... |
1257 |
end = (start_vaddr + PAGEMAP_WALK_SIZE) & PAGEMAP_WALK_MASK; |
d82ef020c proc: pagemap: Ho... |
1258 1259 1260 1261 1262 1263 1264 1265 1266 |
/* overflow ? */ if (end < start_vaddr || end > end_vaddr) end = end_vaddr; down_read(&mm->mmap_sem); ret = walk_page_range(start_vaddr, end, &pagemap_walk); up_read(&mm->mmap_sem); start_vaddr = end; len = min(count, PM_ENTRY_BYTES * pm.pos); |
309361e09 proc: copy_to_use... |
1267 |
if (copy_to_user(buf, pm.buffer, len)) { |
d82ef020c proc: pagemap: Ho... |
1268 |
ret = -EFAULT; |
98bc93e50 proc: fix pagemap... |
1269 |
goto out_mm; |
d82ef020c proc: pagemap: Ho... |
1270 1271 1272 1273 |
} copied += len; buf += len; count -= len; |
85863e475 maps4: add /proc/... |
1274 |
} |
d82ef020c proc: pagemap: Ho... |
1275 1276 1277 |
*ppos += copied; if (!ret || ret == PM_END_OF_BUFFER) ret = copied; |
fb39380b8 pagemap: proper r... |
1278 1279 |
out_mm: mmput(mm); |
98bc93e50 proc: fix pagemap... |
1280 1281 |
out_free: kfree(pm.buffer); |
85863e475 maps4: add /proc/... |
1282 1283 1284 1285 1286 |
out_task: put_task_struct(task); out: return ret; } |
541c237c0 pagemap: prepare ... |
1287 1288 1289 1290 1291 1292 1293 1294 |
static int pagemap_open(struct inode *inode, struct file *file) { pr_warn_once("Bits 55-60 of /proc/PID/pagemap entries are about " "to stop being page-shift some time soon. See the " "linux/Documentation/vm/pagemap.txt for details. "); return 0; } |
85863e475 maps4: add /proc/... |
1295 1296 1297 |
const struct file_operations proc_pagemap_operations = { .llseek = mem_lseek, /* borrow this */ .read = pagemap_read, |
541c237c0 pagemap: prepare ... |
1298 |
.open = pagemap_open, |
85863e475 maps4: add /proc/... |
1299 |
}; |
1e8832811 maps4: make page ... |
1300 |
#endif /* CONFIG_PROC_PAGE_MONITOR */ |
85863e475 maps4: add /proc/... |
1301 |
|
6e21c8f14 [PATCH] /proc/<pi... |
1302 |
#ifdef CONFIG_NUMA |
6e21c8f14 [PATCH] /proc/<pi... |
1303 |
|
f69ff943d mm: proc: move sh... |
1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 |
struct numa_maps { struct vm_area_struct *vma; unsigned long pages; unsigned long anon; unsigned long active; unsigned long writeback; unsigned long mapcount_max; unsigned long dirty; unsigned long swapcache; unsigned long node[MAX_NUMNODES]; }; |
5b52fc890 proc: allocate st... |
1315 1316 1317 1318 |
struct numa_maps_private { struct proc_maps_private proc_maps; struct numa_maps md; }; |
eb4866d00 make /proc/$pid/n... |
1319 1320 |
static void gather_stats(struct page *page, struct numa_maps *md, int pte_dirty, unsigned long nr_pages) |
f69ff943d mm: proc: move sh... |
1321 1322 |
{ int count = page_mapcount(page); |
eb4866d00 make /proc/$pid/n... |
1323 |
md->pages += nr_pages; |
f69ff943d mm: proc: move sh... |
1324 |
if (pte_dirty || PageDirty(page)) |
eb4866d00 make /proc/$pid/n... |
1325 |
md->dirty += nr_pages; |
f69ff943d mm: proc: move sh... |
1326 1327 |
if (PageSwapCache(page)) |
eb4866d00 make /proc/$pid/n... |
1328 |
md->swapcache += nr_pages; |
f69ff943d mm: proc: move sh... |
1329 1330 |
if (PageActive(page) || PageUnevictable(page)) |
eb4866d00 make /proc/$pid/n... |
1331 |
md->active += nr_pages; |
f69ff943d mm: proc: move sh... |
1332 1333 |
if (PageWriteback(page)) |
eb4866d00 make /proc/$pid/n... |
1334 |
md->writeback += nr_pages; |
f69ff943d mm: proc: move sh... |
1335 1336 |
if (PageAnon(page)) |
eb4866d00 make /proc/$pid/n... |
1337 |
md->anon += nr_pages; |
f69ff943d mm: proc: move sh... |
1338 1339 1340 |
if (count > md->mapcount_max) md->mapcount_max = count; |
eb4866d00 make /proc/$pid/n... |
1341 |
md->node[page_to_nid(page)] += nr_pages; |
f69ff943d mm: proc: move sh... |
1342 |
} |
3200a8aaa break out numa_ma... |
1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 |
static struct page *can_gather_numa_stats(pte_t pte, struct vm_area_struct *vma, unsigned long addr) { struct page *page; int nid; if (!pte_present(pte)) return NULL; page = vm_normal_page(vma, addr, pte); if (!page) return NULL; if (PageReserved(page)) return NULL; nid = page_to_nid(page); |
4ff1b2c29 procfs: use N_MEM... |
1360 |
if (!node_isset(nid, node_states[N_MEMORY])) |
3200a8aaa break out numa_ma... |
1361 1362 1363 1364 |
return NULL; return page; } |
f69ff943d mm: proc: move sh... |
1365 1366 1367 1368 1369 1370 1371 1372 1373 |
static int gather_pte_stats(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct numa_maps *md; spinlock_t *ptl; pte_t *orig_pte; pte_t *pte; md = walk->private; |
025c5b245 thp: optimize awa... |
1374 |
|
bf929152e mm, thp: change p... |
1375 |
if (pmd_trans_huge_lock(pmd, md->vma, &ptl) == 1) { |
025c5b245 thp: optimize awa... |
1376 1377 1378 1379 1380 1381 1382 |
pte_t huge_pte = *(pte_t *)pmd; struct page *page; page = can_gather_numa_stats(huge_pte, md->vma, addr); if (page) gather_stats(page, md, pte_dirty(huge_pte), HPAGE_PMD_SIZE/PAGE_SIZE); |
bf929152e mm, thp: change p... |
1383 |
spin_unlock(ptl); |
025c5b245 thp: optimize awa... |
1384 |
return 0; |
32ef43848 teach /proc/$pid/... |
1385 |
} |
1a5a9906d mm: thp: fix pmd_... |
1386 1387 |
if (pmd_trans_unstable(pmd)) return 0; |
f69ff943d mm: proc: move sh... |
1388 1389 |
orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); do { |
3200a8aaa break out numa_ma... |
1390 |
struct page *page = can_gather_numa_stats(*pte, md->vma, addr); |
f69ff943d mm: proc: move sh... |
1391 1392 |
if (!page) continue; |
eb4866d00 make /proc/$pid/n... |
1393 |
gather_stats(page, md, pte_dirty(*pte), 1); |
f69ff943d mm: proc: move sh... |
1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 |
} while (pte++, addr += PAGE_SIZE, addr != end); pte_unmap_unlock(orig_pte, ptl); return 0; } #ifdef CONFIG_HUGETLB_PAGE static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { struct numa_maps *md; struct page *page; |
d4c54919e mm: add !pte_pres... |
1405 |
if (!pte_present(*pte)) |
f69ff943d mm: proc: move sh... |
1406 1407 1408 1409 1410 1411 1412 |
return 0; page = pte_page(*pte); if (!page) return 0; md = walk->private; |
eb4866d00 make /proc/$pid/n... |
1413 |
gather_stats(page, md, pte_dirty(*pte), 1); |
f69ff943d mm: proc: move sh... |
1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 |
return 0; } #else static int gather_hugetbl_stats(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { return 0; } #endif /* * Display pages allocated per node and memory policy via /proc. */ |
b76437579 procfs: mark thre... |
1428 |
static int show_numa_map(struct seq_file *m, void *v, int is_pid) |
f69ff943d mm: proc: move sh... |
1429 |
{ |
5b52fc890 proc: allocate st... |
1430 1431 |
struct numa_maps_private *numa_priv = m->private; struct proc_maps_private *proc_priv = &numa_priv->proc_maps; |
f69ff943d mm: proc: move sh... |
1432 |
struct vm_area_struct *vma = v; |
5b52fc890 proc: allocate st... |
1433 |
struct numa_maps *md = &numa_priv->md; |
f69ff943d mm: proc: move sh... |
1434 1435 1436 1437 |
struct file *file = vma->vm_file; struct mm_struct *mm = vma->vm_mm; struct mm_walk walk = {}; struct mempolicy *pol; |
948927ee9 mm, mempolicy: ma... |
1438 1439 |
char buffer[64]; int nid; |
f69ff943d mm: proc: move sh... |
1440 1441 1442 |
if (!mm) return 0; |
5b52fc890 proc: allocate st... |
1443 1444 |
/* Ensure we start with an empty set of numa_maps statistics. */ memset(md, 0, sizeof(*md)); |
f69ff943d mm: proc: move sh... |
1445 1446 1447 1448 1449 1450 1451 |
md->vma = vma; walk.hugetlb_entry = gather_hugetbl_stats; walk.pmd_entry = gather_pte_stats; walk.private = md; walk.mm = mm; |
498f23717 mempolicy: fix sh... |
1452 1453 1454 1455 1456 1457 1458 |
pol = __get_vma_policy(vma, vma->vm_start); if (pol) { mpol_to_str(buffer, sizeof(buffer), pol); mpol_cond_put(pol); } else { mpol_to_str(buffer, sizeof(buffer), proc_priv->task_mempolicy); } |
f69ff943d mm: proc: move sh... |
1459 1460 1461 1462 |
seq_printf(m, "%08lx %s", vma->vm_start, buffer); if (file) { |
17c2b4ee4 fs/proc/task_mmu.... |
1463 |
seq_puts(m, " file="); |
f69ff943d mm: proc: move sh... |
1464 1465 1466 |
seq_path(m, &file->f_path, " \t= "); } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { |
17c2b4ee4 fs/proc/task_mmu.... |
1467 |
seq_puts(m, " heap"); |
b76437579 procfs: mark thre... |
1468 |
} else { |
58cb65487 proc/maps: make v... |
1469 |
pid_t tid = pid_of_stack(proc_priv, vma, is_pid); |
b76437579 procfs: mark thre... |
1470 1471 1472 1473 1474 1475 1476 |
if (tid != 0) { /* * 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)) |
17c2b4ee4 fs/proc/task_mmu.... |
1477 |
seq_puts(m, " stack"); |
b76437579 procfs: mark thre... |
1478 1479 1480 |
else seq_printf(m, " stack:%d", tid); } |
f69ff943d mm: proc: move sh... |
1481 |
} |
fc360bd9c /proc/self/numa_m... |
1482 |
if (is_vm_hugetlb_page(vma)) |
17c2b4ee4 fs/proc/task_mmu.... |
1483 |
seq_puts(m, " huge"); |
fc360bd9c /proc/self/numa_m... |
1484 |
|
f69ff943d mm: proc: move sh... |
1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 |
walk_page_range(vma->vm_start, vma->vm_end, &walk); if (!md->pages) goto out; if (md->anon) seq_printf(m, " anon=%lu", md->anon); if (md->dirty) seq_printf(m, " dirty=%lu", md->dirty); if (md->pages != md->anon && md->pages != md->dirty) seq_printf(m, " mapped=%lu", md->pages); if (md->mapcount_max > 1) seq_printf(m, " mapmax=%lu", md->mapcount_max); if (md->swapcache) seq_printf(m, " swapcache=%lu", md->swapcache); if (md->active < md->pages && !is_vm_hugetlb_page(vma)) seq_printf(m, " active=%lu", md->active); if (md->writeback) seq_printf(m, " writeback=%lu", md->writeback); |
948927ee9 mm, mempolicy: ma... |
1510 1511 1512 |
for_each_node_state(nid, N_MEMORY) if (md->node[nid]) seq_printf(m, " N%d=%lu", nid, md->node[nid]); |
f69ff943d mm: proc: move sh... |
1513 1514 1515 |
out: seq_putc(m, ' '); |
b8c20a9b8 fs/proc/task_mmu.... |
1516 |
m_cache_vma(m, vma); |
f69ff943d mm: proc: move sh... |
1517 1518 |
return 0; } |
5b52fc890 proc: allocate st... |
1519 |
|
b76437579 procfs: mark thre... |
1520 1521 1522 1523 1524 1525 1526 1527 1528 |
static int show_pid_numa_map(struct seq_file *m, void *v) { return show_numa_map(m, v, 1); } static int show_tid_numa_map(struct seq_file *m, void *v) { return show_numa_map(m, v, 0); } |
03a44825b procfs: constify ... |
1529 |
static const struct seq_operations proc_pid_numa_maps_op = { |
b76437579 procfs: mark thre... |
1530 1531 1532 1533 |
.start = m_start, .next = m_next, .stop = m_stop, .show = show_pid_numa_map, |
6e21c8f14 [PATCH] /proc/<pi... |
1534 |
}; |
662795deb [PATCH] proc: Mov... |
1535 |
|
b76437579 procfs: mark thre... |
1536 1537 1538 1539 1540 1541 1542 1543 1544 |
static const struct seq_operations proc_tid_numa_maps_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_tid_numa_map, }; static int numa_maps_open(struct inode *inode, struct file *file, const struct seq_operations *ops) |
662795deb [PATCH] proc: Mov... |
1545 |
{ |
4db7d0ee1 fs/proc/task_mmu.... |
1546 1547 |
return proc_maps_open(inode, file, ops, sizeof(struct numa_maps_private)); |
662795deb [PATCH] proc: Mov... |
1548 |
} |
b76437579 procfs: mark thre... |
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 |
static int pid_numa_maps_open(struct inode *inode, struct file *file) { return numa_maps_open(inode, file, &proc_pid_numa_maps_op); } static int tid_numa_maps_open(struct inode *inode, struct file *file) { return numa_maps_open(inode, file, &proc_tid_numa_maps_op); } const struct file_operations proc_pid_numa_maps_operations = { .open = pid_numa_maps_open, .read = seq_read, .llseek = seq_lseek, |
29a40ace8 fs/proc/task_mmu.... |
1563 |
.release = proc_map_release, |
b76437579 procfs: mark thre... |
1564 1565 1566 1567 |
}; const struct file_operations proc_tid_numa_maps_operations = { .open = tid_numa_maps_open, |
662795deb [PATCH] proc: Mov... |
1568 1569 |
.read = seq_read, .llseek = seq_lseek, |
29a40ace8 fs/proc/task_mmu.... |
1570 |
.release = proc_map_release, |
662795deb [PATCH] proc: Mov... |
1571 |
}; |
f69ff943d mm: proc: move sh... |
1572 |
#endif /* CONFIG_NUMA */ |