Initial import

1 files changed, 54 insertions, 0 deletions

diff --git a/lib/show_mem.c b/lib/show_mem.c
new file mode 100644
index 000000000..adc98e182
--- /dev/null
+++ b/lib/show_mem.c
@@ -0,0 +1,54 @@
+/*
+ * Generic show_mem() implementation
+ *
+ * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
+ * All code subject to the GPL version 2.
+ */
+
+#include <linux/mm.h>
+#include <linux/quicklist.h>
+#include <linux/cma.h>
+
+void show_mem(unsigned int filter)
+{
+	pg_data_t *pgdat;
+	unsigned long total = 0, reserved = 0, highmem = 0;
+
+	printk("Mem-Info:\n");
+	show_free_areas(filter);
+
+	for_each_online_pgdat(pgdat) {
+		unsigned long flags;
+		int zoneid;
+
+		pgdat_resize_lock(pgdat, &flags);
+		for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
+			struct zone *zone = &pgdat->node_zones[zoneid];
+			if (!populated_zone(zone))
+				continue;
+
+			total += zone->present_pages;
+			reserved += zone->present_pages - zone->managed_pages;
+
+			if (is_highmem_idx(zoneid))
+				highmem += zone->present_pages;
+		}
+		pgdat_resize_unlock(pgdat, &flags);
+	}
+
+	printk("%lu pages RAM\n", total);
+	printk("%lu pages HighMem/MovableOnly\n", highmem);
+#ifdef CONFIG_CMA
+	printk("%lu pages reserved\n", (reserved - totalcma_pages));
+	printk("%lu pages cma reserved\n", totalcma_pages);
+#else
+	printk("%lu pages reserved\n", reserved);
+#endif
+#ifdef CONFIG_QUICKLIST
+	printk("%lu pages in pagetable cache\n",
+		quicklist_total_size());
+#endif
+#ifdef CONFIG_MEMORY_FAILURE
+	printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
+#endif
+}