Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (27 commits)
  [IA64] swiotlb abstraction (e.g. for Xen)
  [IA64] swiotlb cleanup
  [IA64] make swiotlb use bus_to_virt/virt_to_bus
  [IA64] swiotlb bug fixes
  [IA64] Hook up getcpu system call for IA64
  [IA64] clean up sparsemem memory_present call
  [IA64] show_mem() for IA64 sparsemem NUMA
  [IA64] missing exports hwsw_sync_...
  [IA64] virt_to_page() can be called with NULL arg
  [IA64] alignment bug in ldscript
  [IA64] register memory ranges in a consistent manner
  [IA64] Enable SWIOTLB only when needed
  [IA64-SGI] Check for TIO errors on shub2 Altix
  [IA64] remove bogus prototype ia64_esi_init()
  [IA64] Clear IRQ affinity when unregistered
  [IA64] fix ACPI Kconfig issues
  [IA64] Fix NULL-pointer dereference in ia64_machine_kexec()
  [IA64] find thread for user rbs address
  [IA64] use snprintf() on features field of /proc/cpuinfo
  [IA64] enable singlestep on system call
  ...

1 files changed, 49 insertions, 27 deletions

diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c
index 1e79551231b9..63e6d49c5813 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;
 
@@ -177,7 +199,7 @@ find_memory (void)
 
 #ifdef CONFIG_CRASH_DUMP
 	/* If we are doing a crash dump, we still need to know the real mem
-	 * size before original memory map is * reset. */
+	 * size before original memory map is reset. */
 	saved_max_pfn = max_pfn;
 #endif
 }