Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/arm64/mm/ptdump_debugfs.c b/arch/arm64/mm/ptdump_debugfs.c
new file mode 100644
index 000000000..d29d722ec
--- /dev/null
+++ b/arch/arm64/mm/ptdump_debugfs.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/debugfs.h>
+#include <linux/memory_hotplug.h>
+#include <linux/seq_file.h>
+
+#include <asm/ptdump.h>
+
+static int ptdump_show(struct seq_file *m, void *v)
+{
+	struct ptdump_info *info = m->private;
+
+	get_online_mems();
+	ptdump_walk(m, info);
+	put_online_mems();
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(ptdump);
+
+void ptdump_debugfs_register(struct ptdump_info *info, const char *name)
+{
+	debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
+}