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-rw-r--r--fs/proc/task_mmu.c132
1 files changed, 132 insertions, 0 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 28b4a0253a9..64e84cadfa3 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -2,6 +2,8 @@
#include <linux/hugetlb.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/pagemap.h>
+#include <linux/mempolicy.h>
#include <asm/elf.h>
#include <asm/uaccess.h>
#include "internal.h"
@@ -233,3 +235,133 @@ struct seq_operations proc_pid_maps_op = {
.stop = m_stop,
.show = show_map
};
+
+#ifdef CONFIG_NUMA
+
+struct numa_maps {
+ unsigned long pages;
+ unsigned long anon;
+ unsigned long mapped;
+ unsigned long mapcount_max;
+ unsigned long node[MAX_NUMNODES];
+};
+
+/*
+ * Calculate numa node maps for a vma
+ */
+static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
+{
+ struct page *page;
+ unsigned long vaddr;
+ struct mm_struct *mm = vma->vm_mm;
+ int i;
+ struct numa_maps *md = kmalloc(sizeof(struct numa_maps), GFP_KERNEL);
+
+ if (!md)
+ return NULL;
+ md->pages = 0;
+ md->anon = 0;
+ md->mapped = 0;
+ md->mapcount_max = 0;
+ for_each_node(i)
+ md->node[i] =0;
+
+ spin_lock(&mm->page_table_lock);
+ for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
+ page = follow_page(mm, vaddr, 0);
+ if (page) {
+ int count = page_mapcount(page);
+
+ if (count)
+ md->mapped++;
+ if (count > md->mapcount_max)
+ md->mapcount_max = count;
+ md->pages++;
+ if (PageAnon(page))
+ md->anon++;
+ md->node[page_to_nid(page)]++;
+ }
+ }
+ spin_unlock(&mm->page_table_lock);
+ return md;
+}
+
+static int show_numa_map(struct seq_file *m, void *v)
+{
+ struct task_struct *task = m->private;
+ struct vm_area_struct *vma = v;
+ struct mempolicy *pol;
+ struct numa_maps *md;
+ struct zone **z;
+ int n;
+ int first;
+
+ if (!vma->vm_mm)
+ return 0;
+
+ md = get_numa_maps(vma);
+ if (!md)
+ return 0;
+
+ seq_printf(m, "%08lx", vma->vm_start);
+ pol = get_vma_policy(task, vma, vma->vm_start);
+ /* Print policy */
+ switch (pol->policy) {
+ case MPOL_PREFERRED:
+ seq_printf(m, " prefer=%d", pol->v.preferred_node);
+ break;
+ case MPOL_BIND:
+ seq_printf(m, " bind={");
+ first = 1;
+ for (z = pol->v.zonelist->zones; *z; z++) {
+
+ if (!first)
+ seq_putc(m, ',');
+ else
+ first = 0;
+ seq_printf(m, "%d/%s", (*z)->zone_pgdat->node_id,
+ (*z)->name);
+ }
+ seq_putc(m, '}');
+ break;
+ case MPOL_INTERLEAVE:
+ seq_printf(m, " interleave={");
+ first = 1;
+ for_each_node(n) {
+ if (test_bit(n, pol->v.nodes)) {
+ if (!first)
+ seq_putc(m,',');
+ else
+ first = 0;
+ seq_printf(m, "%d",n);
+ }
+ }
+ seq_putc(m, '}');
+ break;
+ default:
+ seq_printf(m," default");
+ break;
+ }
+ seq_printf(m, " MaxRef=%lu Pages=%lu Mapped=%lu",
+ md->mapcount_max, md->pages, md->mapped);
+ if (md->anon)
+ seq_printf(m," Anon=%lu",md->anon);
+
+ for_each_online_node(n) {
+ if (md->node[n])
+ seq_printf(m, " N%d=%lu", n, md->node[n]);
+ }
+ seq_putc(m, '\n');
+ kfree(md);
+ if (m->count < m->size) /* vma is copied successfully */
+ m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
+ return 0;
+}
+
+struct seq_operations proc_pid_numa_maps_op = {
+ .start = m_start,
+ .next = m_next,
+ .stop = m_stop,
+ .show = show_numa_map
+};
+#endif