From 050f99b1b85876a8456b76ebfee7d43746d37f6c Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Mon, 13 Mar 2017 15:58:35 +0100
Subject: [PATCH] s390/debugfs: introduce top-level 's390' directory
Introduce a top-level 's390' directory which should be used when
adding new s390 specific debug feature files and/or directories.
This makes hopefully sure that the contents of the s390 directory will
be a bit more structured. Right now we have a couple of top-level
files where it is not easy to tell to which subsystem they belong to.
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/kernel/Makefile | 2 +-
arch/s390/kernel/kdebugfs.c | 15 +++++++++++++++
2 files changed, 16 insertions(+), 1 deletion(-)
create mode 100644 arch/s390/kernel/kdebugfs.c
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 08e7924ea2f98..adb3fe2e3d42d 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -56,7 +56,7 @@ obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o als.o
obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
obj-y += runtime_instr.o cache.o fpu.o dumpstack.o guarded_storage.o
-obj-y += entry.o reipl.o relocate_kernel.o
+obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o
extra-y += head.o head64.o vmlinux.lds
diff --git a/arch/s390/kernel/kdebugfs.c b/arch/s390/kernel/kdebugfs.c
new file mode 100644
index 0000000000000..ee85e17dd79dd
--- /dev/null
+++ b/arch/s390/kernel/kdebugfs.c
@@ -0,0 +1,15 @@
+#include <linux/debugfs.h>
+#include <linux/export.h>
+#include <linux/init.h>
+
+struct dentry *arch_debugfs_dir;
+EXPORT_SYMBOL(arch_debugfs_dir);
+
+static int __init arch_kdebugfs_init(void)
+{
+ arch_debugfs_dir = debugfs_create_dir("s390", NULL);
+ if (IS_ERR(arch_debugfs_dir))
+ arch_debugfs_dir = NULL;
+ return 0;
+}
+postcore_initcall(arch_kdebugfs_init);
--
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