X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fproc%2Ftask_mmu.c;h=34fbee7669df84fce3c440a2a778fac95f65a201;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=28b4a0253a92161fff797dcfae5f79585fafd022;hpb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;p=linux-2.6.git diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 28b4a0253..34fbee766 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -2,32 +2,66 @@ #include #include #include +#include +#include +#include + #include #include +#include #include "internal.h" char *task_mem(struct mm_struct *mm, char *buffer) { unsigned long data, text, lib; + 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; 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; buffer += sprintf(buffer, + "VmPeak:\t%8lu kB\n" "VmSize:\t%8lu kB\n" "VmLck:\t%8lu kB\n" + "VmHWM:\t%8lu kB\n" "VmRSS:\t%8lu kB\n" "VmData:\t%8lu kB\n" "VmStk:\t%8lu kB\n" "VmExe:\t%8lu kB\n" "VmLib:\t%8lu kB\n" - "VmPTE:\t%8lu kB\n", - (mm->total_vm - mm->reserved_vm) << (PAGE_SHIFT-10), + "VmPTE:\t%8lu kB\n" + "StaBrk:\t%08lx kB\n" + "Brk:\t%08lx kB\n" + "StaStk:\t%08lx kB\n" + , + hiwater_vm << (PAGE_SHIFT-10), + (total_vm - mm->reserved_vm) << (PAGE_SHIFT-10), mm->locked_vm << (PAGE_SHIFT-10), - get_mm_counter(mm, rss) << (PAGE_SHIFT-10), + hiwater_rss << (PAGE_SHIFT-10), + total_rss << (PAGE_SHIFT-10), data << (PAGE_SHIFT-10), mm->stack_vm << (PAGE_SHIFT-10), text, lib, - (PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10); + (PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10, + mm->start_brk, mm->brk, mm->start_stack); +#ifdef __i386__ + if (!nx_enabled) + buffer += sprintf(buffer, + "ExecLim:\t%08lx\n", mm->context.exec_limit); +#endif return buffer; } @@ -39,13 +73,11 @@ unsigned long task_vsize(struct mm_struct *mm) int task_statm(struct mm_struct *mm, int *shared, int *text, int *data, int *resident) { - int rss = get_mm_counter(mm, rss); - - *shared = rss - get_mm_counter(mm, anon_rss); + *shared = get_mm_counter(mm, file_rss); *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> PAGE_SHIFT; *data = mm->total_vm - mm->shared_vm; - *resident = rss; + *resident = *shared + get_mm_counter(mm, anon_rss); return mm->total_vm; } @@ -87,128 +119,262 @@ static void pad_len_spaces(struct seq_file *m, int len) seq_printf(m, "%*c", len, ' '); } -static int show_map(struct seq_file *m, void *v) +struct mem_size_stats +{ + unsigned long resident; + unsigned long shared_clean; + unsigned long shared_dirty; + unsigned long private_clean; + unsigned long private_dirty; +}; + +static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats *mss) { struct task_struct *task = m->private; - struct vm_area_struct *map = v; - struct mm_struct *mm = map->vm_mm; - struct file *file = map->vm_file; - int flags = map->vm_flags; + struct vm_area_struct *vma = v; + struct mm_struct *mm = vma->vm_mm; + struct file *file = vma->vm_file; + int flags = vma->vm_flags; unsigned long ino = 0; dev_t dev = 0; int len; if (file) { - struct inode *inode = map->vm_file->f_dentry->d_inode; + struct inode *inode = vma->vm_file->f_dentry->d_inode; dev = inode->i_sb->s_dev; ino = inode->i_ino; } seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n", - map->vm_start, - map->vm_end, + vma->vm_start, + vma->vm_end, flags & VM_READ ? 'r' : '-', flags & VM_WRITE ? 'w' : '-', - flags & VM_EXEC ? 'x' : '-', + (flags & VM_EXEC +#ifdef __i386__ + || (!nx_enabled && + (vma->vm_start < task->mm->context.exec_limit)) +#endif + ) + ? 'x' : '-', flags & VM_MAYSHARE ? 's' : 'p', - map->vm_pgoff << PAGE_SHIFT, + vma->vm_pgoff << PAGE_SHIFT, MAJOR(dev), MINOR(dev), ino, &len); /* * Print the dentry name for named mappings, and a * special [heap] marker for the heap: */ - if (map->vm_file) { + if (file) { pad_len_spaces(m, len); - seq_path(m, file->f_vfsmnt, file->f_dentry, ""); + seq_path(m, file->f_vfsmnt, file->f_dentry, "\n"); } else { if (mm) { - if (map->vm_start <= mm->start_brk && - map->vm_end >= mm->brk) { + if (vma->vm_end == mm->brk) { pad_len_spaces(m, len); seq_puts(m, "[heap]"); - } else { - if (map->vm_start <= mm->start_stack && - map->vm_end >= mm->start_stack) { + } else if (vma->vm_start <= mm->start_stack && + vma->vm_end >= mm->start_stack) { pad_len_spaces(m, len); seq_puts(m, "[stack]"); } +#ifdef __i386__ + else if (vma->vm_start == + (unsigned long)mm->context.vdso) { + pad_len_spaces(m, len); + seq_puts(m, "[vdso]"); } +#endif } else { pad_len_spaces(m, len); seq_puts(m, "[vdso]"); } } seq_putc(m, '\n'); - if (m->count < m->size) /* map is copied successfully */ - m->version = (map != get_gate_vma(task))? map->vm_start: 0; + + if (mss) + seq_printf(m, + "Size: %8lu kB\n" + "Rss: %8lu kB\n" + "Shared_Clean: %8lu kB\n" + "Shared_Dirty: %8lu kB\n" + "Private_Clean: %8lu kB\n" + "Private_Dirty: %8lu kB\n", + (vma->vm_end - vma->vm_start) >> 10, + mss->resident >> 10, + mss->shared_clean >> 10, + mss->shared_dirty >> 10, + mss->private_clean >> 10, + mss->private_dirty >> 10); + + if (m->count < m->size) /* vma is copied successfully */ + m->version = (vma != get_gate_vma(task))? vma->vm_start: 0; return 0; } +static int show_map(struct seq_file *m, void *v) +{ + return show_map_internal(m, v, NULL); +} + +static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd, + unsigned long addr, unsigned long end, + struct mem_size_stats *mss) +{ + pte_t *pte, ptent; + spinlock_t *ptl; + struct page *page; + + pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); + do { + ptent = *pte; + if (!pte_present(ptent)) + continue; + + mss->resident += PAGE_SIZE; + + page = vm_normal_page(vma, addr, ptent); + if (!page) + continue; + + if (page_mapcount(page) >= 2) { + if (pte_dirty(ptent)) + mss->shared_dirty += PAGE_SIZE; + else + mss->shared_clean += PAGE_SIZE; + } else { + if (pte_dirty(ptent)) + mss->private_dirty += PAGE_SIZE; + else + mss->private_clean += PAGE_SIZE; + } + } while (pte++, addr += PAGE_SIZE, addr != end); + pte_unmap_unlock(pte - 1, ptl); + cond_resched(); +} + +static inline void smaps_pmd_range(struct vm_area_struct *vma, pud_t *pud, + unsigned long addr, unsigned long end, + struct mem_size_stats *mss) +{ + pmd_t *pmd; + unsigned long next; + + pmd = pmd_offset(pud, addr); + do { + next = pmd_addr_end(addr, end); + if (pmd_none_or_clear_bad(pmd)) + continue; + smaps_pte_range(vma, pmd, addr, next, mss); + } while (pmd++, addr = next, addr != end); +} + +static inline void smaps_pud_range(struct vm_area_struct *vma, pgd_t *pgd, + unsigned long addr, unsigned long end, + struct mem_size_stats *mss) +{ + pud_t *pud; + unsigned long next; + + pud = pud_offset(pgd, addr); + do { + next = pud_addr_end(addr, end); + if (pud_none_or_clear_bad(pud)) + continue; + smaps_pmd_range(vma, pud, addr, next, mss); + } while (pud++, addr = next, addr != end); +} + +static inline void smaps_pgd_range(struct vm_area_struct *vma, + unsigned long addr, unsigned long end, + struct mem_size_stats *mss) +{ + pgd_t *pgd; + unsigned long next; + + pgd = pgd_offset(vma->vm_mm, addr); + do { + next = pgd_addr_end(addr, end); + if (pgd_none_or_clear_bad(pgd)) + continue; + smaps_pud_range(vma, pgd, addr, next, mss); + } while (pgd++, addr = next, addr != end); +} + +static int show_smap(struct seq_file *m, void *v) +{ + struct vm_area_struct *vma = v; + struct mem_size_stats mss; + + memset(&mss, 0, sizeof mss); + if (vma->vm_mm && !is_vm_hugetlb_page(vma)) + smaps_pgd_range(vma, vma->vm_start, vma->vm_end, &mss); + return show_map_internal(m, v, &mss); +} + static void *m_start(struct seq_file *m, loff_t *pos) { struct task_struct *task = m->private; unsigned long last_addr = m->version; struct mm_struct *mm; - struct vm_area_struct *map, *tail_map; + struct vm_area_struct *vma, *tail_vma; loff_t l = *pos; /* * We remember last_addr rather than next_addr to hit with * mmap_cache most of the time. We have zero last_addr at - * the begining and also after lseek. We will have -1 last_addr - * after the end of the maps. + * the beginning and also after lseek. We will have -1 last_addr + * after the end of the vmas. */ if (last_addr == -1UL) return NULL; - mm = get_task_mm(task); + mm = mm_for_maps(task); if (!mm) return NULL; - tail_map = get_gate_vma(task); - down_read(&mm->mmap_sem); + tail_vma = get_gate_vma(task); /* Start with last addr hint */ - if (last_addr && (map = find_vma(mm, last_addr))) { - map = map->vm_next; + if (last_addr && (vma = find_vma(mm, last_addr))) { + vma = vma->vm_next; goto out; } /* - * Check the map index is within the range and do + * Check the vma index is within the range and do * sequential scan until m_index. */ - map = NULL; + vma = NULL; if ((unsigned long)l < mm->map_count) { - map = mm->mmap; - while (l-- && map) - map = map->vm_next; + vma = mm->mmap; + while (l-- && vma) + vma = vma->vm_next; goto out; } if (l != mm->map_count) - tail_map = NULL; /* After gate map */ + tail_vma = NULL; /* After gate vma */ out: - if (map) - return map; + if (vma) + return vma; - /* End of maps has reached */ - m->version = (tail_map != NULL)? 0: -1UL; + /* End of vmas has been reached */ + m->version = (tail_vma != NULL)? 0: -1UL; up_read(&mm->mmap_sem); mmput(mm); - return tail_map; + return tail_vma; } static void m_stop(struct seq_file *m, void *v) { struct task_struct *task = m->private; - struct vm_area_struct *map = v; - if (map && map != get_gate_vma(task)) { - struct mm_struct *mm = map->vm_mm; + struct vm_area_struct *vma = v; + if (vma && vma != get_gate_vma(task)) { + struct mm_struct *mm = vma->vm_mm; up_read(&mm->mmap_sem); mmput(mm); } @@ -217,14 +383,14 @@ static void m_stop(struct seq_file *m, void *v) static void *m_next(struct seq_file *m, void *v, loff_t *pos) { struct task_struct *task = m->private; - struct vm_area_struct *map = v; - struct vm_area_struct *tail_map = get_gate_vma(task); + struct vm_area_struct *vma = v; + struct vm_area_struct *tail_vma = get_gate_vma(task); (*pos)++; - if (map && (map != tail_map) && map->vm_next) - return map->vm_next; + if (vma && (vma != tail_vma) && vma->vm_next) + return vma->vm_next; m_stop(m, v); - return (map != tail_map)? tail_map: NULL; + return (vma != tail_vma)? tail_vma: NULL; } struct seq_operations proc_pid_maps_op = { @@ -233,3 +399,21 @@ struct seq_operations proc_pid_maps_op = { .stop = m_stop, .show = show_map }; + +struct seq_operations proc_pid_smaps_op = { + .start = m_start, + .next = m_next, + .stop = m_stop, + .show = show_smap +}; + +#ifdef CONFIG_NUMA +extern int show_numa_map(struct seq_file *m, void *v); + +struct seq_operations proc_pid_numa_maps_op = { + .start = m_start, + .next = m_next, + .stop = m_stop, + .show = show_numa_map +}; +#endif