Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
---
lib/lmb.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/lib/lmb.c b/lib/lmb.c
index 6c38c87..1e11891 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -16,6 +16,8 @@
#include <linux/bitops.h>
#include <linux/poison.h>
#include <linux/pfn.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#include <linux/lmb.h>
struct lmb lmb;
@@ -696,3 +698,52 @@ static int __init early_lmb(char *p)
}
early_param("lmb", early_lmb);
+#ifdef CONFIG_DEBUG_FS
+
+static int lmb_debug_show(struct seq_file *m, void *private)
+{
+ struct lmb_type *type = m->private;
+ struct lmb_region *reg;
+ int i;
+
+ for (i = 0; i < type->cnt; i++) {
+ reg = &type->regions[i];
+ seq_printf(m, "%4d: ", i);
+ if (sizeof(phys_addr_t) == 4)
+ seq_printf(m, "0x%08lx..0x%08lx\n",
+ (unsigned long)reg->base,
+ (unsigned long)(reg->base + reg->size - 1));
+ else
+ seq_printf(m, "0x%016llx..0x%016llx\n",
+ (unsigned long long)reg->base,
+ (unsigned long long)(reg->base + reg->size - 1));
+
+ }
+ return 0;
+}
+
+static int lmb_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, lmb_debug_show, inode->i_private);
+}
+
+static const struct file_operations lmb_debug_fops = {
+ .open = lmb_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init lmb_init_debugfs(void)
+{
+ struct dentry *root = debugfs_create_dir("lmb", NULL);
+ if (!root)
+ return -ENXIO;
+ debugfs_create_file("memory", S_IRUGO, root, &lmb.memory, &lmb_debug_fops);
+ debugfs_create_file("reserved", S_IRUGO, root, &lmb.reserved, &lmb_debug_fops);
+
+ return 0;
+}
+__initcall(lmb_init_debugfs);
+
+#endif /* CONFIG_DEBUG_FS */
--
1.6.3.3
--
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