mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 18:46:45 +07:00
ca5999fde0
The include/linux/pgtable.h is going to be the home of generic page table manipulation functions. Start with moving asm-generic/pgtable.h to include/linux/pgtable.h and make the latter include asm/pgtable.h. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-3-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
#include <linux/debugfs.h>
|
|
#include <linux/efi.h>
|
|
#include <linux/module.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/pgtable.h>
|
|
|
|
static int ptdump_show(struct seq_file *m, void *v)
|
|
{
|
|
ptdump_walk_pgd_level_debugfs(m, &init_mm, false);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(ptdump);
|
|
|
|
static int ptdump_curknl_show(struct seq_file *m, void *v)
|
|
{
|
|
if (current->mm->pgd)
|
|
ptdump_walk_pgd_level_debugfs(m, current->mm, false);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(ptdump_curknl);
|
|
|
|
#ifdef CONFIG_PAGE_TABLE_ISOLATION
|
|
static int ptdump_curusr_show(struct seq_file *m, void *v)
|
|
{
|
|
if (current->mm->pgd)
|
|
ptdump_walk_pgd_level_debugfs(m, current->mm, true);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(ptdump_curusr);
|
|
#endif
|
|
|
|
#if defined(CONFIG_EFI) && defined(CONFIG_X86_64)
|
|
static int ptdump_efi_show(struct seq_file *m, void *v)
|
|
{
|
|
if (efi_mm.pgd)
|
|
ptdump_walk_pgd_level_debugfs(m, &efi_mm, false);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(ptdump_efi);
|
|
#endif
|
|
|
|
static struct dentry *dir;
|
|
|
|
static int __init pt_dump_debug_init(void)
|
|
{
|
|
dir = debugfs_create_dir("page_tables", NULL);
|
|
|
|
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
|
|
debugfs_create_file("current_user", 0400, dir, NULL,
|
|
&ptdump_curusr_fops);
|
|
#endif
|
|
#if defined(CONFIG_EFI) && defined(CONFIG_X86_64)
|
|
debugfs_create_file("efi", 0400, dir, NULL, &ptdump_efi_fops);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static void __exit pt_dump_debug_exit(void)
|
|
{
|
|
debugfs_remove_recursive(dir);
|
|
}
|
|
|
|
module_init(pt_dump_debug_init);
|
|
module_exit(pt_dump_debug_exit);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Arjan van de Ven <arjan@linux.intel.com>");
|
|
MODULE_DESCRIPTION("Kernel debugging helper that dumps pagetables");
|