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569e4d25f4
Since commit 8b41fc4454 ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.
So remove it in the files in this commit, none of which can be built as
modules.
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: linux-modules@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: x86@kernel.org
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/debugfs.h>
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#include <linux/efi.h>
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#include <linux/module.h>
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#include <linux/seq_file.h>
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#include <linux/pgtable.h>
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static int ptdump_show(struct seq_file *m, void *v)
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{
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ptdump_walk_pgd_level_debugfs(m, &init_mm, false);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(ptdump);
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static int ptdump_curknl_show(struct seq_file *m, void *v)
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{
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if (current->mm->pgd)
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ptdump_walk_pgd_level_debugfs(m, current->mm, false);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(ptdump_curknl);
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#ifdef CONFIG_PAGE_TABLE_ISOLATION
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static int ptdump_curusr_show(struct seq_file *m, void *v)
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{
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if (current->mm->pgd)
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ptdump_walk_pgd_level_debugfs(m, current->mm, true);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(ptdump_curusr);
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#endif
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#if defined(CONFIG_EFI) && defined(CONFIG_X86_64)
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static int ptdump_efi_show(struct seq_file *m, void *v)
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{
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if (efi_mm.pgd)
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ptdump_walk_pgd_level_debugfs(m, &efi_mm, false);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(ptdump_efi);
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#endif
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static struct dentry *dir;
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static int __init pt_dump_debug_init(void)
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{
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dir = debugfs_create_dir("page_tables", NULL);
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debugfs_create_file("kernel", 0400, dir, NULL, &ptdump_fops);
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debugfs_create_file("current_kernel", 0400, dir, NULL,
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&ptdump_curknl_fops);
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#ifdef CONFIG_PAGE_TABLE_ISOLATION
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debugfs_create_file("current_user", 0400, dir, NULL,
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&ptdump_curusr_fops);
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#endif
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#if defined(CONFIG_EFI) && defined(CONFIG_X86_64)
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debugfs_create_file("efi", 0400, dir, NULL, &ptdump_efi_fops);
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#endif
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return 0;
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}
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static void __exit pt_dump_debug_exit(void)
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{
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debugfs_remove_recursive(dir);
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}
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module_init(pt_dump_debug_init);
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module_exit(pt_dump_debug_exit);
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MODULE_AUTHOR("Arjan van de Ven <arjan@linux.intel.com>");
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MODULE_DESCRIPTION("Kernel debugging helper that dumps pagetables");
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