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authorChristoph Lameter <clameter@sgi.com>2006-01-08 01:01:02 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-08 20:12:44 -0800
commit1a75a6c825c17249ca49f050a872a04ce0997ce3 (patch)
tree2ca8fc6513a20e5b4bec67686323ce1f5c8e237c /fs
parent38e35860dbe6197a4b42eb6e8b47da940b7695dd (diff)
downloadop-kernel-dev-1a75a6c825c17249ca49f050a872a04ce0997ce3.zip
op-kernel-dev-1a75a6c825c17249ca49f050a872a04ce0997ce3.tar.gz
[PATCH] Fold numa_maps into mempolicies.c
First discussed at http://marc.theaimsgroup.com/?t=113149255100001&r=1&w=2 - Use the check_range() in mempolicy.c to gather statistics. - Improve the numa_maps code in general and fix some comments. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/proc/task_mmu.c127
1 files changed, 5 insertions, 122 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 50bd5a8f..0eaad41 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -390,129 +390,12 @@ struct seq_operations proc_pid_smaps_op = {
};
#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(struct vm_area_struct *vma)
-{
- int i;
- struct page *page;
- unsigned long vaddr;
- 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;
-
- for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
- page = follow_page(vma, 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)]++;
- }
- cond_resched();
- }
- 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 (node_isset(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;
-}
+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
+ .start = m_start,
+ .next = m_next,
+ .stop = m_stop,
+ .show = show_numa_map
};
#endif
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