/* Internal flags */
#define MPOL_MF_DISCONTIG_OK (MPOL_MF_INTERNAL << 0) /* Skip checks for continuous vmas */
#define MPOL_MF_INVERT (MPOL_MF_INTERNAL << 1) /* Invert check for nodemask */
-#define MPOL_MF_STATS (MPOL_MF_INTERNAL << 2) /* Gather statistics */
static struct kmem_cache *policy_cache;
static struct kmem_cache *sn_cache;
},
};
-static void gather_stats(struct page *, void *, int pte_dirty);
static void migrate_page_add(struct page *page, struct list_head *pagelist,
unsigned long flags);
if (node_isset(nid, *nodes) == !!(flags & MPOL_MF_INVERT))
continue;
- if (flags & MPOL_MF_STATS)
- gather_stats(page, private, pte_dirty(*pte));
- else if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL))
+ if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL))
migrate_page_add(page, private, flags);
else
break;
* freeing by another task. It is the caller's responsibility to free the
* extra reference for shared policies.
*/
-static struct mempolicy *get_vma_policy(struct task_struct *task,
+struct mempolicy *get_vma_policy(struct task_struct *task,
struct vm_area_struct *vma, unsigned long addr)
{
struct mempolicy *pol = task->mempolicy;
}
return p - buffer;
}
-
-struct numa_maps {
- 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];
-};
-
-static void gather_stats(struct page *page, void *private, int pte_dirty)
-{
- struct numa_maps *md = private;
- int count = page_mapcount(page);
-
- md->pages++;
- if (pte_dirty || PageDirty(page))
- md->dirty++;
-
- if (PageSwapCache(page))
- md->swapcache++;
-
- if (PageActive(page) || PageUnevictable(page))
- md->active++;
-
- if (PageWriteback(page))
- md->writeback++;
-
- if (PageAnon(page))
- md->anon++;
-
- if (count > md->mapcount_max)
- md->mapcount_max = count;
-
- md->node[page_to_nid(page)]++;
-}
-
-#ifdef CONFIG_HUGETLB_PAGE
-static void check_huge_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end,
- struct numa_maps *md)
-{
- unsigned long addr;
- struct page *page;
- struct hstate *h = hstate_vma(vma);
- unsigned long sz = huge_page_size(h);
-
- for (addr = start; addr < end; addr += sz) {
- pte_t *ptep = huge_pte_offset(vma->vm_mm,
- addr & huge_page_mask(h));
- pte_t pte;
-
- if (!ptep)
- continue;
-
- pte = *ptep;
- if (pte_none(pte))
- continue;
-
- page = pte_page(pte);
- if (!page)
- continue;
-
- gather_stats(page, md, pte_dirty(*ptep));
- }
-}
-#else
-static inline void check_huge_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end,
- struct numa_maps *md)
-{
-}
-#endif
-
-/*
- * Display pages allocated per node and memory policy via /proc.
- */
-int show_numa_map(struct seq_file *m, void *v)
-{
- struct proc_maps_private *priv = m->private;
- struct vm_area_struct *vma = v;
- struct numa_maps *md;
- struct file *file = vma->vm_file;
- struct mm_struct *mm = vma->vm_mm;
- struct mempolicy *pol;
- int n;
- char buffer[50];
-
- if (!mm)
- return 0;
-
- md = kzalloc(sizeof(struct numa_maps), GFP_KERNEL);
- if (!md)
- return 0;
-
- pol = get_vma_policy(priv->task, vma, vma->vm_start);
- mpol_to_str(buffer, sizeof(buffer), pol, 0);
- mpol_cond_put(pol);
-
- seq_printf(m, "%08lx %s", vma->vm_start, buffer);
-
- if (file) {
- seq_printf(m, " file=");
- seq_path(m, &file->f_path, "\n\t= ");
- } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) {
- seq_printf(m, " heap");
- } else if (vma->vm_start <= mm->start_stack &&
- vma->vm_end >= mm->start_stack) {
- seq_printf(m, " stack");
- }
-
- if (is_vm_hugetlb_page(vma)) {
- check_huge_range(vma, vma->vm_start, vma->vm_end, md);
- seq_printf(m, " huge");
- } else {
- check_pgd_range(vma, vma->vm_start, vma->vm_end,
- &node_states[N_HIGH_MEMORY], MPOL_MF_STATS, md);
- }
-
- 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);
-
- for_each_node_state(n, N_HIGH_MEMORY)
- if (md->node[n])
- seq_printf(m, " N%d=%lu", n, md->node[n]);
-out:
- seq_putc(m, '\n');
- kfree(md);
-
- if (m->count < m->size)
- m->version = (vma != priv->tail_vma) ? vma->vm_start : 0;
- return 0;
-}
git.openpandora.org / pandora-kernel.git / blobdiff