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Diffstat (limited to 'arch/x86/mm/debug_pagetables.c')
-rw-r--r--arch/x86/mm/debug_pagetables.c36
1 files changed, 8 insertions, 28 deletions
diff --git a/arch/x86/mm/debug_pagetables.c b/arch/x86/mm/debug_pagetables.c
index cd84f067e41d..39001a401eff 100644
--- a/arch/x86/mm/debug_pagetables.c
+++ b/arch/x86/mm/debug_pagetables.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/debugfs.h>
#include <linux/efi.h>
#include <linux/module.h>
@@ -25,8 +26,6 @@ static int ptdump_curknl_show(struct seq_file *m, void *v)
DEFINE_SHOW_ATTRIBUTE(ptdump_curknl);
#ifdef CONFIG_PAGE_TABLE_ISOLATION
-static struct dentry *pe_curusr;
-
static int ptdump_curusr_show(struct seq_file *m, void *v)
{
if (current->mm->pgd) {
@@ -41,8 +40,6 @@ DEFINE_SHOW_ATTRIBUTE(ptdump_curusr);
#endif
#if defined(CONFIG_EFI) && defined(CONFIG_X86_64)
-static struct dentry *pe_efi;
-
static int ptdump_efi_show(struct seq_file *m, void *v)
{
if (efi_mm.pgd)
@@ -53,41 +50,24 @@ static int ptdump_efi_show(struct seq_file *m, void *v)
DEFINE_SHOW_ATTRIBUTE(ptdump_efi);
#endif
-static struct dentry *dir, *pe_knl, *pe_curknl;
+static struct dentry *dir;
static int __init pt_dump_debug_init(void)
{
dir = debugfs_create_dir("page_tables", NULL);
- if (!dir)
- return -ENOMEM;
-
- pe_knl = debugfs_create_file("kernel", 0400, dir, NULL,
- &ptdump_fops);
- if (!pe_knl)
- goto err;
- pe_curknl = debugfs_create_file("current_kernel", 0400,
- dir, NULL, &ptdump_curknl_fops);
- if (!pe_curknl)
- goto err;
+ debugfs_create_file("kernel", 0400, dir, NULL, &ptdump_fops);
+ debugfs_create_file("current_kernel", 0400, dir, NULL,
+ &ptdump_curknl_fops);
#ifdef CONFIG_PAGE_TABLE_ISOLATION
- pe_curusr = debugfs_create_file("current_user", 0400,
- dir, NULL, &ptdump_curusr_fops);
- if (!pe_curusr)
- goto err;
+ debugfs_create_file("current_user", 0400, dir, NULL,
+ &ptdump_curusr_fops);
#endif
-
#if defined(CONFIG_EFI) && defined(CONFIG_X86_64)
- pe_efi = debugfs_create_file("efi", 0400, dir, NULL, &ptdump_efi_fops);
- if (!pe_efi)
- goto err;
+ debugfs_create_file("efi", 0400, dir, NULL, &ptdump_efi_fops);
#endif
-
return 0;
-err:
- debugfs_remove_recursive(dir);
- return -ENOMEM;
}
static void __exit pt_dump_debug_exit(void)