This implements a platform-independent version of show_mem().
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxxx>
---
lib/Makefile | 2 -
lib/show_mem.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 64 insertions(+), 1 deletion(-)
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -6,7 +6,7 @@ lib-y := ctype.o string.o vsprintf.o cmd
rbtree.o radix-tree.o dump_stack.o \
idr.o int_sqrt.o extable.o prio_tree.o \
sha1.o irq_regs.o reciprocal_div.o argv_split.o \
- proportions.o prio_heap.o ratelimit.o
+ proportions.o prio_heap.o ratelimit.o show_mem.o
ifdef CONFIG_FTRACE
# Do not profile string.o, since it may be used in early boot or vdso
--- /dev/null
+++ b/lib/show_mem.c
@@ -0,0 +1,63 @@
+/*
+ * Generic show_mem() implementation
+ *
+ * Copyright (C) 2008 Johannes Weiner <hannes@xxxxxxxxxxxx>
+ * All code subject to the GPL version 2.
+ */
+
+#include <linux/mm.h>
+#include <linux/nmi.h>
+#include <linux/quicklist.h>
+
+void show_mem(void)
+{
+ pg_data_t *pgdat;
+ unsigned long total = 0, reserved = 0, shared = 0,
+ nonshared = 0, highmem = 0;
+
+ printk(KERN_INFO "Mem-Info:\n");
+ show_free_areas();
+
+ for_each_online_pgdat(pgdat) {
+ unsigned long i, flags;
+
+ pgdat_resize_lock(pgdat, &flags);
+ for (i = 0; i < pgdat->node_spanned_pages; i++) {
+ struct page *page;
+ unsigned long pfn = pgdat->node_start_pfn + i;
+
+ if (unlikely(!(i % MAX_ORDER_NR_PAGES)))
+ touch_nmi_watchdog();
+
+ if (!pfn_valid(pfn))
+ continue;
+
+ page = pfn_to_page(pfn);
+
+ if (PageHighMem(page))
+ highmem++;
+
+ if (PageReserved(page))
+ reserved++;
+ else if (page_count(page) == 1)
+ nonshared++;
+ else if (page_count(page) > 1)
+ shared += page_count(page) - 1;
+
+ total++;
+ }
+ pgdat_resize_unlock(pgdat, &flags);
+ }
+
+ printk(KERN_INFO "%lu pages RAM\n", total);
+#ifdef CONFIG_HIGHMEM
+ printk(KERN_INFO "%lu pages HighMem\n", highmem);
+#endif
+ printk(KERN_INFO "%lu pages reserved\n", reserved);
+ printk(KERN_INFO "%lu pages shared\n", shared);
+ printk(KERN_INFO "%lu pages non-shared\n", nonshared);
+#ifdef CONFIG_QUICKLIST
+ printk(KERN_INFO "%lu pages in pagetable cache\n",
+ quicklist_total_size());
+#endif
+}
--
--
To unsubscribe from this list: send the line "unsubscribe linux-arch" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
