aboutsummaryrefslogtreecommitdiff
path: root/arch/ia64/mm/contig.c
diff options
context:
space:
mode:
authorGeorge Beshers <gbeshers@sgi.com>2007-02-05 16:20:04 -0800
committerTony Luck <tony.luck@intel.com>2007-02-05 16:51:59 -0800
commitf1c0afa2e8802c01cf82c915e2bb3cb2a81570d4 (patch)
treeaf867a8c57b025b4e149157c885a968b9126339d /arch/ia64/mm/contig.c
parent671496affdb5228786896864c3f900f66563e8c1 (diff)
downloadlinux-2.6.38-lt-ux500-f1c0afa2e8802c01cf82c915e2bb3cb2a81570d4.tar.gz
[IA64] show_mem() for IA64 sparsemem NUMA
On the ia64 architecture only this patch upgrades show_mem() for sparse memory to be the same as it was for discontig memory. It has been shown to work on NUMA and flatmem architectures. Signed-off-by: George Beshers <gbeshers@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/mm/contig.c')
-rw-r--r--arch/ia64/mm/contig.c74
1 files changed, 48 insertions, 26 deletions
diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c
index ec8657bb5bd..63e6d49c581 100644
--- a/arch/ia64/mm/contig.c
+++ b/arch/ia64/mm/contig.c
@@ -30,47 +30,69 @@ static unsigned long max_gap;
#endif
/**
- * show_mem - display a memory statistics summary
+ * show_mem - give short summary of memory stats
*
- * Just walks the pages in the system and describes where they're allocated.
+ * Shows a simple page count of reserved and used pages in the system.
+ * For discontig machines, it does this on a per-pgdat basis.
*/
-void
-show_mem (void)
+void show_mem(void)
{
- int i, total = 0, reserved = 0;
- int shared = 0, cached = 0;
+ int i, total_reserved = 0;
+ int total_shared = 0, total_cached = 0;
+ unsigned long total_present = 0;
+ pg_data_t *pgdat;
printk(KERN_INFO "Mem-info:\n");
show_free_areas();
-
printk(KERN_INFO "Free swap: %6ldkB\n",
nr_swap_pages<<(PAGE_SHIFT-10));
- i = max_mapnr;
- for (i = 0; i < max_mapnr; i++) {
- if (!pfn_valid(i)) {
+ printk(KERN_INFO "Node memory in pages:\n");
+ for_each_online_pgdat(pgdat) {
+ unsigned long present;
+ unsigned long flags;
+ int shared = 0, cached = 0, reserved = 0;
+
+ pgdat_resize_lock(pgdat, &flags);
+ present = pgdat->node_present_pages;
+ for(i = 0; i < pgdat->node_spanned_pages; i++) {
+ struct page *page;
+ if (pfn_valid(pgdat->node_start_pfn + i))
+ page = pfn_to_page(pgdat->node_start_pfn + i);
+ else {
#ifdef CONFIG_VIRTUAL_MEM_MAP
- if (max_gap < LARGE_GAP)
- continue;
- i = vmemmap_find_next_valid_pfn(0, i) - 1;
+ if (max_gap < LARGE_GAP)
+ continue;
#endif
- continue;
+ i = vmemmap_find_next_valid_pfn(pgdat->node_id,
+ i) - 1;
+ continue;
+ }
+ if (PageReserved(page))
+ reserved++;
+ else if (PageSwapCache(page))
+ cached++;
+ else if (page_count(page))
+ shared += page_count(page)-1;
}
- total++;
- if (PageReserved(mem_map+i))
- reserved++;
- else if (PageSwapCache(mem_map+i))
- cached++;
- else if (page_count(mem_map + i))
- shared += page_count(mem_map + i) - 1;
+ pgdat_resize_unlock(pgdat, &flags);
+ total_present += present;
+ total_reserved += reserved;
+ total_cached += cached;
+ total_shared += shared;
+ printk(KERN_INFO "Node %4d: RAM: %11ld, rsvd: %8d, "
+ "shrd: %10d, swpd: %10d\n", pgdat->node_id,
+ present, reserved, shared, cached);
}
- printk(KERN_INFO "%d pages of RAM\n", total);
- printk(KERN_INFO "%d reserved pages\n", reserved);
- printk(KERN_INFO "%d pages shared\n", shared);
- printk(KERN_INFO "%d pages swap cached\n", cached);
- printk(KERN_INFO "%ld pages in page table cache\n",
+ printk(KERN_INFO "%ld pages of RAM\n", total_present);
+ printk(KERN_INFO "%d reserved pages\n", total_reserved);
+ printk(KERN_INFO "%d pages shared\n", total_shared);
+ printk(KERN_INFO "%d pages swap cached\n", total_cached);
+ printk(KERN_INFO "Total of %ld pages in page table cache\n",
pgtable_quicklist_total_size());
+ printk(KERN_INFO "%d free buffer pages\n", nr_free_buffer_pages());
}
+
/* physical address where the bootmem map is located */
unsigned long bootmap_start;