[PATCH] kexec: export kexec.h to userspace
Eric W. Biederman
ebiederm at xmission.com
Sun Jun 20 04:56:40 EDT 2010
Sam Ravnborg <sam at ravnborg.org> writes:
>>From 23dc7f6d65a5bdcd05f2346b9f5cdaf232758db3 Mon Sep 17 00:00:00 2001
> From: Sam Ravnborg <sam at ravnborg.org>
> Date: Sat, 19 Jun 2010 20:11:59 +0200
> Subject: [PATCH] kexec: export kexec.h to userspace
>
> kexec_load is a system call and it needs a header
> file with its input arguments.
>
> Split kexec.h in two parts:
> kexec.h - the userspace visible definitions
> kexec_kernel.h - the kernel definitions
>
> Fix up all files that include kexec.h to include kexec_kernel.h
> In a few cases an unused include was dropped.
Can we please do this the other way around and create a kexec_user.h?
Having a an xxx_user.h is a pattern we already have in the kernel.
I can't find a signle xxxx_kernel.h
If we can modify the userspace /sbin/kexec code to use this file (or
at least a copy of it). I will feel a lot more comfortable with this
patch as the code will actually be tested.
Oh, and please copy the kexec list on patches like this as well.
I like the idea of this patch. I just don't trust the implementation
yet.
> Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
> Acked-by: Andi Kleen <andi at firstfloor.org>
> Cc: Eric Biederman <ebiederm at xmission.com>
> ---
>
> Changes:
> - Added ack from Andi. (Based on "that would work for me too" comment)
> - Modified pattern in MAINTAINERS, thanks to Joe Perches
>
>
> But it would be nice with a bit more comments on the
> split in two files...
>
> Sam
>
> MAINTAINERS | 2 +-
> arch/arm/kernel/machine_kexec.c | 2 +-
> arch/arm/kernel/traps.c | 2 +-
> arch/ia64/kernel/crash.c | 2 +-
> arch/ia64/kernel/efi.c | 2 +-
> arch/ia64/kernel/machine_kexec.c | 2 +-
> arch/ia64/kernel/setup.c | 2 +-
> arch/ia64/kernel/smp.c | 2 +-
> arch/ia64/mm/init.c | 2 +-
> arch/microblaze/kernel/prom.c | 2 +-
> arch/mips/kernel/machine_kexec.c | 2 +-
> arch/powerpc/kernel/crash.c | 2 +-
> arch/powerpc/kernel/machine_kexec.c | 2 +-
> arch/powerpc/kernel/machine_kexec_32.c | 2 +-
> arch/powerpc/kernel/machine_kexec_64.c | 2 +-
> arch/powerpc/kernel/prom.c | 2 +-
> arch/powerpc/kernel/traps.c | 2 +-
> arch/powerpc/platforms/cell/ras.c | 2 +-
> arch/powerpc/platforms/embedded6xx/gamecube.c | 2 +-
> arch/powerpc/platforms/embedded6xx/wii.c | 2 +-
> arch/powerpc/platforms/iseries/setup.c | 2 +-
> arch/s390/kernel/crash.c | 2 +-
> arch/s390/kernel/machine_kexec.c | 2 +-
> arch/sh/kernel/machine_kexec.c | 2 +-
> arch/sh/kernel/reboot.c | 2 +-
> arch/sh/kernel/setup.c | 2 +-
> arch/sh/kernel/traps_32.c | 2 +-
> arch/x86/kernel/crash.c | 2 +-
> arch/x86/kernel/dumpstack.c | 2 +-
> arch/x86/kernel/dumpstack_32.c | 1 -
> arch/x86/kernel/dumpstack_64.c | 1 -
> arch/x86/kernel/machine_kexec_32.c | 2 +-
> arch/x86/kernel/machine_kexec_64.c | 2 +-
> arch/x86/kernel/setup.c | 2 +-
> arch/x86/kernel/setup_percpu.c | 1 -
> arch/x86/kernel/traps.c | 1 -
> arch/x86/mm/numa_32.c | 1 -
> drivers/base/cpu.c | 2 +-
> include/linux/Kbuild | 1 +
> include/linux/crash_dump.h | 1 -
> include/linux/kexec.h | 200 ++-----------------------
> include/linux/kexec_kernel.h | 193 ++++++++++++++++++++++++
> init/initramfs.c | 2 +-
> kernel/kexec.c | 2 +-
> kernel/ksysfs.c | 2 +-
> kernel/panic.c | 2 +-
> kernel/printk.c | 2 +-
> kernel/sys.c | 2 +-
> 48 files changed, 243 insertions(+), 235 deletions(-)
> create mode 100644 include/linux/kexec_kernel.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 6d119c9..ae8526b 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -3325,7 +3325,7 @@ M: Eric Biederman <ebiederm at xmission.com>
> W: http://ftp.kernel.org/pub/linux/kernel/people/horms/kexec-tools/
> L: kexec at lists.infradead.org
> S: Maintained
> -F: include/linux/kexec.h
> +F: include/linux/kexec*
> F: kernel/kexec.c
>
> KEYS/KEYRINGS:
> diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
> index 598ca61..c5ac5b3 100644
> --- a/arch/arm/kernel/machine_kexec.c
> +++ b/arch/arm/kernel/machine_kexec.c
> @@ -3,7 +3,7 @@
> */
>
> #include <linux/mm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/delay.h>
> #include <linux/reboot.h>
> #include <linux/io.h>
> diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
> index 1621e53..b01edc8 100644
> --- a/arch/arm/kernel/traps.c
> +++ b/arch/arm/kernel/traps.c
> @@ -20,7 +20,7 @@
> #include <linux/hardirq.h>
> #include <linux/kdebug.h>
> #include <linux/module.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/delay.h>
> #include <linux/init.h>
>
> diff --git a/arch/ia64/kernel/crash.c b/arch/ia64/kernel/crash.c
> index b942f40..0566d49 100644
> --- a/arch/ia64/kernel/crash.c
> +++ b/arch/ia64/kernel/crash.c
> @@ -12,7 +12,7 @@
> #include <linux/delay.h>
> #include <linux/crash_dump.h>
> #include <linux/bootmem.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/elfcore.h>
> #include <linux/sysctl.h>
> #include <linux/init.h>
> diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
> index a0f0019..c74e94a 100644
> --- a/arch/ia64/kernel/efi.c
> +++ b/arch/ia64/kernel/efi.c
> @@ -29,7 +29,7 @@
> #include <linux/slab.h>
> #include <linux/time.h>
> #include <linux/efi.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/mm.h>
>
> #include <asm/io.h>
> diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c
> index 3d3aeef..5ac58da 100644
> --- a/arch/ia64/kernel/machine_kexec.c
> +++ b/arch/ia64/kernel/machine_kexec.c
> @@ -11,7 +11,7 @@
> */
>
> #include <linux/mm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/cpu.h>
> #include <linux/irq.h>
> #include <linux/efi.h>
> diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
> index 41ae6a5..f37a646 100644
> --- a/arch/ia64/kernel/setup.c
> +++ b/arch/ia64/kernel/setup.c
> @@ -43,7 +43,7 @@
> #include <linux/initrd.h>
> #include <linux/pm.h>
> #include <linux/cpufreq.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/crash_dump.h>
>
> #include <asm/machvec.h>
> diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
> index dabeefe..248a43c 100644
> --- a/arch/ia64/kernel/smp.c
> +++ b/arch/ia64/kernel/smp.c
> @@ -30,7 +30,7 @@
> #include <linux/delay.h>
> #include <linux/efi.h>
> #include <linux/bitops.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
>
> #include <asm/atomic.h>
> #include <asm/current.h>
> diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
> index ed41759..b478826 100644
> --- a/arch/ia64/mm/init.c
> +++ b/arch/ia64/mm/init.c
> @@ -19,7 +19,7 @@
> #include <linux/swap.h>
> #include <linux/proc_fs.h>
> #include <linux/bitops.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
>
> #include <asm/dma.h>
> #include <asm/io.h>
> diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
> index a15ef6d..31ea314 100644
> --- a/arch/microblaze/kernel/prom.c
> +++ b/arch/microblaze/kernel/prom.c
> @@ -26,7 +26,7 @@
> #include <linux/initrd.h>
> #include <linux/bitops.h>
> #include <linux/module.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/debugfs.h>
> #include <linux/irq.h>
> #include <linux/lmb.h>
> diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c
> index 85beb9b..973739d 100644
> --- a/arch/mips/kernel/machine_kexec.c
> +++ b/arch/mips/kernel/machine_kexec.c
> @@ -6,7 +6,7 @@
> * Version 2. See the file COPYING for more details.
> */
>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/mm.h>
> #include <linux/delay.h>
>
> diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
> index b46f2e0..a3010bc 100644
> --- a/arch/powerpc/kernel/crash.c
> +++ b/arch/powerpc/kernel/crash.c
> @@ -15,7 +15,7 @@
> #include <linux/kernel.h>
> #include <linux/smp.h>
> #include <linux/reboot.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/bootmem.h>
> #include <linux/crash_dump.h>
> #include <linux/delay.h>
> diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
> index bb3d893..801e964 100644
> --- a/arch/powerpc/kernel/machine_kexec.c
> +++ b/arch/powerpc/kernel/machine_kexec.c
> @@ -9,7 +9,7 @@
> * Version 2. See the file COPYING for more details.
> */
>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/reboot.h>
> #include <linux/threads.h>
> #include <linux/lmb.h>
> diff --git a/arch/powerpc/kernel/machine_kexec_32.c b/arch/powerpc/kernel/machine_kexec_32.c
> index ae63a96..95085a1 100644
> --- a/arch/powerpc/kernel/machine_kexec_32.c
> +++ b/arch/powerpc/kernel/machine_kexec_32.c
> @@ -9,7 +9,7 @@
> * Version 2. See the file COPYING for more details.
> */
>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/mm.h>
> #include <linux/string.h>
> #include <asm/cacheflush.h>
> diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
> index 26f9900..038b871 100644
> --- a/arch/powerpc/kernel/machine_kexec_64.c
> +++ b/arch/powerpc/kernel/machine_kexec_64.c
> @@ -10,7 +10,7 @@
> */
>
>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/smp.h>
> #include <linux/thread_info.h>
> #include <linux/init_task.h>
> diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
> index 05131d6..8dec91d 100644
> --- a/arch/powerpc/kernel/prom.c
> +++ b/arch/powerpc/kernel/prom.c
> @@ -28,7 +28,7 @@
> #include <linux/initrd.h>
> #include <linux/bitops.h>
> #include <linux/module.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/debugfs.h>
> #include <linux/irq.h>
> #include <linux/lmb.h>
> diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
> index 25fc339..e82321d 100644
> --- a/arch/powerpc/kernel/traps.c
> +++ b/arch/powerpc/kernel/traps.c
> @@ -29,7 +29,7 @@
> #include <linux/prctl.h>
> #include <linux/delay.h>
> #include <linux/kprobes.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/backlight.h>
> #include <linux/bug.h>
> #include <linux/kdebug.h>
> diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
> index 1d3c4ef..2839cbd 100644
> --- a/arch/powerpc/platforms/cell/ras.c
> +++ b/arch/powerpc/platforms/cell/ras.c
> @@ -14,7 +14,7 @@
> #include <linux/slab.h>
> #include <linux/smp.h>
> #include <linux/reboot.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/crash_dump.h>
>
> #include <asm/kexec.h>
> diff --git a/arch/powerpc/platforms/embedded6xx/gamecube.c b/arch/powerpc/platforms/embedded6xx/gamecube.c
> index 1106fd9..6b51478 100644
> --- a/arch/powerpc/platforms/embedded6xx/gamecube.c
> +++ b/arch/powerpc/platforms/embedded6xx/gamecube.c
> @@ -15,7 +15,7 @@
> #include <linux/kernel.h>
> #include <linux/init.h>
> #include <linux/irq.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/seq_file.h>
> #include <linux/of_platform.h>
>
> diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
> index 174a04a..8a46583 100644
> --- a/arch/powerpc/platforms/embedded6xx/wii.c
> +++ b/arch/powerpc/platforms/embedded6xx/wii.c
> @@ -18,7 +18,7 @@
> #include <linux/init.h>
> #include <linux/irq.h>
> #include <linux/seq_file.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/of_platform.h>
> #include <linux/lmb.h>
> #include <mm/mmu_decl.h>
> diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
> index b086341..370891a 100644
> --- a/arch/powerpc/platforms/iseries/setup.c
> +++ b/arch/powerpc/platforms/iseries/setup.c
> @@ -23,7 +23,7 @@
> #include <linux/string.h>
> #include <linux/seq_file.h>
> #include <linux/kdev_t.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/major.h>
> #include <linux/root_dev.h>
> #include <linux/kernel.h>
> diff --git a/arch/s390/kernel/crash.c b/arch/s390/kernel/crash.c
> index 8cc7c9f..6bd969a 100644
> --- a/arch/s390/kernel/crash.c
> +++ b/arch/s390/kernel/crash.c
> @@ -8,7 +8,7 @@
> */
>
> #include <linux/threads.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/reboot.h>
>
> void machine_crash_shutdown(struct pt_regs *regs)
> diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
> index a922d51..ebfbc82 100644
> --- a/arch/s390/kernel/machine_kexec.c
> +++ b/arch/s390/kernel/machine_kexec.c
> @@ -9,7 +9,7 @@
>
> #include <linux/device.h>
> #include <linux/mm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/delay.h>
> #include <linux/reboot.h>
> #include <asm/cio.h>
> diff --git a/arch/sh/kernel/machine_kexec.c b/arch/sh/kernel/machine_kexec.c
> index 5a559e6..18ba90d 100644
> --- a/arch/sh/kernel/machine_kexec.c
> +++ b/arch/sh/kernel/machine_kexec.c
> @@ -9,7 +9,7 @@
> * Version 2. See the file COPYING for more details.
> */
> #include <linux/mm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/delay.h>
> #include <linux/reboot.h>
> #include <linux/numa.h>
> diff --git a/arch/sh/kernel/reboot.c b/arch/sh/kernel/reboot.c
> index b1fca66..b53bc7a 100644
> --- a/arch/sh/kernel/reboot.c
> +++ b/arch/sh/kernel/reboot.c
> @@ -1,5 +1,5 @@
> #include <linux/pm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/kernel.h>
> #include <linux/reboot.h>
> #include <linux/module.h>
> diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
> index 2727346..a2edc3e 100644
> --- a/arch/sh/kernel/setup.c
> +++ b/arch/sh/kernel/setup.c
> @@ -20,7 +20,7 @@
> #include <linux/pfn.h>
> #include <linux/fs.h>
> #include <linux/mm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/module.h>
> #include <linux/smp.h>
> #include <linux/err.h>
> diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
> index c3d86fa..7c9b26b 100644
> --- a/arch/sh/kernel/traps_32.c
> +++ b/arch/sh/kernel/traps_32.c
> @@ -22,7 +22,7 @@
> #include <linux/bug.h>
> #include <linux/debug_locks.h>
> #include <linux/kdebug.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/limits.h>
> #include <linux/sysfs.h>
> #include <linux/uaccess.h>
> diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
> index ebd4c51..fac1068 100644
> --- a/arch/x86/kernel/crash.c
> +++ b/arch/x86/kernel/crash.c
> @@ -12,7 +12,7 @@
> #include <linux/kernel.h>
> #include <linux/smp.h>
> #include <linux/reboot.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/delay.h>
> #include <linux/elf.h>
> #include <linux/elfcore.h>
> diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
> index c89a386..3988f4f 100644
> --- a/arch/x86/kernel/dumpstack.c
> +++ b/arch/x86/kernel/dumpstack.c
> @@ -2,6 +2,7 @@
> * Copyright (C) 1991, 1992 Linus Torvalds
> * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
> */
> +#include <linux/kexec_kernel.h>
> #include <linux/kallsyms.h>
> #include <linux/kprobes.h>
> #include <linux/uaccess.h>
> @@ -11,7 +12,6 @@
> #include <linux/module.h>
> #include <linux/ptrace.h>
> #include <linux/ftrace.h>
> -#include <linux/kexec.h>
> #include <linux/bug.h>
> #include <linux/nmi.h>
> #include <linux/sysfs.h>
> diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
> index 11540a1..624ccc5 100644
> --- a/arch/x86/kernel/dumpstack_32.c
> +++ b/arch/x86/kernel/dumpstack_32.c
> @@ -9,7 +9,6 @@
> #include <linux/kdebug.h>
> #include <linux/module.h>
> #include <linux/ptrace.h>
> -#include <linux/kexec.h>
> #include <linux/sysfs.h>
> #include <linux/bug.h>
> #include <linux/nmi.h>
> diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
> index 272c9f1..5fa1079 100644
> --- a/arch/x86/kernel/dumpstack_64.c
> +++ b/arch/x86/kernel/dumpstack_64.c
> @@ -9,7 +9,6 @@
> #include <linux/kdebug.h>
> #include <linux/module.h>
> #include <linux/ptrace.h>
> -#include <linux/kexec.h>
> #include <linux/sysfs.h>
> #include <linux/bug.h>
> #include <linux/nmi.h>
> diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
> index a3fa43b..11d6464 100644
> --- a/arch/x86/kernel/machine_kexec_32.c
> +++ b/arch/x86/kernel/machine_kexec_32.c
> @@ -7,7 +7,7 @@
> */
>
> #include <linux/mm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/delay.h>
> #include <linux/init.h>
> #include <linux/numa.h>
> diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
> index 035c8c5..faa23cd 100644
> --- a/arch/x86/kernel/machine_kexec_64.c
> +++ b/arch/x86/kernel/machine_kexec_64.c
> @@ -7,7 +7,7 @@
> */
>
> #include <linux/mm.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/string.h>
> #include <linux/gfp.h>
> #include <linux/reboot.h>
> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
> index b4ae4ac..202c206 100644
> --- a/arch/x86/kernel/setup.c
> +++ b/arch/x86/kernel/setup.c
> @@ -42,7 +42,7 @@
> #include <linux/edd.h>
> #include <linux/iscsi_ibft.h>
> #include <linux/nodemask.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/dmi.h>
> #include <linux/pfn.h>
> #include <linux/pci.h>
> diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
> index de3b63a..2204da2 100644
> --- a/arch/x86/kernel/setup_percpu.c
> +++ b/arch/x86/kernel/setup_percpu.c
> @@ -5,7 +5,6 @@
> #include <linux/init.h>
> #include <linux/bootmem.h>
> #include <linux/percpu.h>
> -#include <linux/kexec.h>
> #include <linux/crash_dump.h>
> #include <linux/smp.h>
> #include <linux/topology.h>
> diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
> index 142d70c..22d9552 100644
> --- a/arch/x86/kernel/traps.c
> +++ b/arch/x86/kernel/traps.c
> @@ -22,7 +22,6 @@
> #include <linux/string.h>
> #include <linux/delay.h>
> #include <linux/errno.h>
> -#include <linux/kexec.h>
> #include <linux/sched.h>
> #include <linux/timer.h>
> #include <linux/init.h>
> diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
> index 809baaa..66bf642 100644
> --- a/arch/x86/mm/numa_32.c
> +++ b/arch/x86/mm/numa_32.c
> @@ -29,7 +29,6 @@
> #include <linux/initrd.h>
> #include <linux/nodemask.h>
> #include <linux/module.h>
> -#include <linux/kexec.h>
> #include <linux/pfn.h>
> #include <linux/swap.h>
> #include <linux/acpi.h>
> diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
> index 251acea..f67a55a 100644
> --- a/drivers/base/cpu.c
> +++ b/drivers/base/cpu.c
> @@ -107,7 +107,7 @@ static inline void register_cpu_control(struct cpu *cpu)
> #endif /* CONFIG_HOTPLUG_CPU */
>
> #ifdef CONFIG_KEXEC
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
>
> static ssize_t show_crash_notes(struct sys_device *dev, struct sysdev_attribute *attr,
> char *buf)
> diff --git a/include/linux/Kbuild b/include/linux/Kbuild
> index 2fc8e14..f58f3db 100644
> --- a/include/linux/Kbuild
> +++ b/include/linux/Kbuild
> @@ -106,6 +106,7 @@ header-y += irda.h
> header-y += iso_fs.h
> header-y += ixjuser.h
> header-y += jffs2.h
> +header-y += kexec.h
> header-y += keyctl.h
> header-y += limits.h
> header-y += magic.h
> diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h
> index 0026f26..e76e88e 100644
> --- a/include/linux/crash_dump.h
> +++ b/include/linux/crash_dump.h
> @@ -2,7 +2,6 @@
> #define LINUX_CRASH_DUMP_H
>
> #ifdef CONFIG_CRASH_DUMP
> -#include <linux/kexec.h>
> #include <linux/device.h>
> #include <linux/proc_fs.h>
>
> diff --git a/include/linux/kexec.h b/include/linux/kexec.h
> index 03e8e8d..7d3da01 100644
> --- a/include/linux/kexec.h
> +++ b/include/linux/kexec.h
> @@ -1,168 +1,9 @@
> #ifndef LINUX_KEXEC_H
> #define LINUX_KEXEC_H
>
> -#ifdef CONFIG_KEXEC
> -#include <linux/types.h>
> -#include <linux/list.h>
> -#include <linux/linkage.h>
> -#include <linux/compat.h>
> -#include <linux/ioport.h>
> -#include <linux/elfcore.h>
> -#include <linux/elf.h>
> -#include <asm/kexec.h>
> -
> -/* Verify architecture specific macros are defined */
> -
> -#ifndef KEXEC_SOURCE_MEMORY_LIMIT
> -#error KEXEC_SOURCE_MEMORY_LIMIT not defined
> -#endif
> -
> -#ifndef KEXEC_DESTINATION_MEMORY_LIMIT
> -#error KEXEC_DESTINATION_MEMORY_LIMIT not defined
> -#endif
> -
> -#ifndef KEXEC_CONTROL_MEMORY_LIMIT
> -#error KEXEC_CONTROL_MEMORY_LIMIT not defined
> -#endif
> -
> -#ifndef KEXEC_CONTROL_PAGE_SIZE
> -#error KEXEC_CONTROL_PAGE_SIZE not defined
> -#endif
> -
> -#ifndef KEXEC_ARCH
> -#error KEXEC_ARCH not defined
> -#endif
> -
> -#define KEXEC_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
> -#define KEXEC_CORE_NOTE_NAME "CORE"
> -#define KEXEC_CORE_NOTE_NAME_BYTES ALIGN(sizeof(KEXEC_CORE_NOTE_NAME), 4)
> -#define KEXEC_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4)
> -/*
> - * The per-cpu notes area is a list of notes terminated by a "NULL"
> - * note header. For kdump, the code in vmcore.c runs in the context
> - * of the second kernel to combine them into one note.
> - */
> -#define KEXEC_NOTE_BYTES ( (KEXEC_NOTE_HEAD_BYTES * 2) + \
> - KEXEC_CORE_NOTE_NAME_BYTES + \
> - KEXEC_CORE_NOTE_DESC_BYTES )
> -
> /*
> - * This structure is used to hold the arguments that are used when loading
> - * kernel binaries.
> + * Kexec: one kernel loading another
> */
> -
> -typedef unsigned long kimage_entry_t;
> -#define IND_DESTINATION 0x1
> -#define IND_INDIRECTION 0x2
> -#define IND_DONE 0x4
> -#define IND_SOURCE 0x8
> -
> -#define KEXEC_SEGMENT_MAX 16
> -struct kexec_segment {
> - void __user *buf;
> - size_t bufsz;
> - unsigned long mem; /* User space sees this as a (void *) ... */
> - size_t memsz;
> -};
> -
> -#ifdef CONFIG_COMPAT
> -struct compat_kexec_segment {
> - compat_uptr_t buf;
> - compat_size_t bufsz;
> - compat_ulong_t mem; /* User space sees this as a (void *) ... */
> - compat_size_t memsz;
> -};
> -#endif
> -
> -struct kimage {
> - kimage_entry_t head;
> - kimage_entry_t *entry;
> - kimage_entry_t *last_entry;
> -
> - unsigned long destination;
> -
> - unsigned long start;
> - struct page *control_code_page;
> - struct page *swap_page;
> -
> - unsigned long nr_segments;
> - struct kexec_segment segment[KEXEC_SEGMENT_MAX];
> -
> - struct list_head control_pages;
> - struct list_head dest_pages;
> - struct list_head unuseable_pages;
> -
> - /* Address of next control page to allocate for crash kernels. */
> - unsigned long control_page;
> -
> - /* Flags to indicate special processing */
> - unsigned int type : 1;
> -#define KEXEC_TYPE_DEFAULT 0
> -#define KEXEC_TYPE_CRASH 1
> - unsigned int preserve_context : 1;
> -
> -#ifdef ARCH_HAS_KIMAGE_ARCH
> - struct kimage_arch arch;
> -#endif
> -};
> -
> -
> -
> -/* kexec interface functions */
> -extern void machine_kexec(struct kimage *image);
> -extern int machine_kexec_prepare(struct kimage *image);
> -extern void machine_kexec_cleanup(struct kimage *image);
> -extern asmlinkage long sys_kexec_load(unsigned long entry,
> - unsigned long nr_segments,
> - struct kexec_segment __user *segments,
> - unsigned long flags);
> -extern int kernel_kexec(void);
> -#ifdef CONFIG_COMPAT
> -extern asmlinkage long compat_sys_kexec_load(unsigned long entry,
> - unsigned long nr_segments,
> - struct compat_kexec_segment __user *segments,
> - unsigned long flags);
> -#endif
> -extern struct page *kimage_alloc_control_pages(struct kimage *image,
> - unsigned int order);
> -extern void crash_kexec(struct pt_regs *);
> -int kexec_should_crash(struct task_struct *);
> -void crash_save_cpu(struct pt_regs *regs, int cpu);
> -void crash_save_vmcoreinfo(void);
> -void arch_crash_save_vmcoreinfo(void);
> -void vmcoreinfo_append_str(const char *fmt, ...)
> - __attribute__ ((format (printf, 1, 2)));
> -unsigned long paddr_vmcoreinfo_note(void);
> -
> -#define VMCOREINFO_OSRELEASE(value) \
> - vmcoreinfo_append_str("OSRELEASE=%s\n", value)
> -#define VMCOREINFO_PAGESIZE(value) \
> - vmcoreinfo_append_str("PAGESIZE=%ld\n", value)
> -#define VMCOREINFO_SYMBOL(name) \
> - vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name)
> -#define VMCOREINFO_SIZE(name) \
> - vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
> - (unsigned long)sizeof(name))
> -#define VMCOREINFO_STRUCT_SIZE(name) \
> - vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
> - (unsigned long)sizeof(struct name))
> -#define VMCOREINFO_OFFSET(name, field) \
> - vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
> - (unsigned long)offsetof(struct name, field))
> -#define VMCOREINFO_LENGTH(name, value) \
> - vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value)
> -#define VMCOREINFO_NUMBER(name) \
> - vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name)
> -#define VMCOREINFO_CONFIG(name) \
> - vmcoreinfo_append_str("CONFIG_%s=y\n", #name)
> -
> -extern struct kimage *kexec_image;
> -extern struct kimage *kexec_crash_image;
> -
> -#ifndef kexec_flush_icache_page
> -#define kexec_flush_icache_page(page)
> -#endif
> -
> #define KEXEC_ON_CRASH 0x00000001
> #define KEXEC_PRESERVE_CONTEXT 0x00000002
> #define KEXEC_ARCH_MASK 0xffff0000
> @@ -182,37 +23,16 @@ extern struct kimage *kexec_crash_image;
> #define KEXEC_ARCH_MIPS_LE (10 << 16)
> #define KEXEC_ARCH_MIPS ( 8 << 16)
>
> -/* List of defined/legal kexec flags */
> -#ifndef CONFIG_KEXEC_JUMP
> -#define KEXEC_FLAGS KEXEC_ON_CRASH
> +#define KEXEC_SEGMENT_MAX 16
> +struct kexec_segment {
> + void __user *buf;
> + size_t bufsz;
> +#ifdef __KERNEL__
> + unsigned long mem; /* User space sees this as a (void *) ... */
> #else
> -#define KEXEC_FLAGS (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)
> + void *mem;
> #endif
> + size_t memsz;
> +};
>
> -#define VMCOREINFO_BYTES (4096)
> -#define VMCOREINFO_NOTE_NAME "VMCOREINFO"
> -#define VMCOREINFO_NOTE_NAME_BYTES ALIGN(sizeof(VMCOREINFO_NOTE_NAME), 4)
> -#define VMCOREINFO_NOTE_SIZE (KEXEC_NOTE_HEAD_BYTES*2 + VMCOREINFO_BYTES \
> - + VMCOREINFO_NOTE_NAME_BYTES)
> -
> -/* Location of a reserved region to hold the crash kernel.
> - */
> -extern struct resource crashk_res;
> -typedef u32 note_buf_t[KEXEC_NOTE_BYTES/4];
> -extern note_buf_t __percpu *crash_notes;
> -extern u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4];
> -extern size_t vmcoreinfo_size;
> -extern size_t vmcoreinfo_max_size;
> -
> -int __init parse_crashkernel(char *cmdline, unsigned long long system_ram,
> - unsigned long long *crash_size, unsigned long long *crash_base);
> -int crash_shrink_memory(unsigned long new_size);
> -size_t crash_get_memory_size(void);
> -
> -#else /* !CONFIG_KEXEC */
> -struct pt_regs;
> -struct task_struct;
> -static inline void crash_kexec(struct pt_regs *regs) { }
> -static inline int kexec_should_crash(struct task_struct *p) { return 0; }
> -#endif /* CONFIG_KEXEC */
> #endif /* LINUX_KEXEC_H */
> diff --git a/include/linux/kexec_kernel.h b/include/linux/kexec_kernel.h
> new file mode 100644
> index 0000000..5d98b9b
> --- /dev/null
> +++ b/include/linux/kexec_kernel.h
> @@ -0,0 +1,193 @@
> +#ifndef LINUX_KEXEC_KERNEL_H
> +#define LINUX_KEXEC_KERNEL_H
> +
> +#ifdef CONFIG_KEXEC
> +#include <linux/types.h>
> +#include <linux/list.h>
> +#include <linux/linkage.h>
> +#include <linux/compat.h>
> +#include <linux/ioport.h>
> +#include <linux/elfcore.h>
> +#include <linux/elf.h>
> +#include <asm/kexec.h>
> +
> +#include <linux/kexec.h>
> +
> +/* Verify architecture specific macros are defined */
> +
> +#ifndef KEXEC_SOURCE_MEMORY_LIMIT
> +#error KEXEC_SOURCE_MEMORY_LIMIT not defined
> +#endif
> +
> +#ifndef KEXEC_DESTINATION_MEMORY_LIMIT
> +#error KEXEC_DESTINATION_MEMORY_LIMIT not defined
> +#endif
> +
> +#ifndef KEXEC_CONTROL_MEMORY_LIMIT
> +#error KEXEC_CONTROL_MEMORY_LIMIT not defined
> +#endif
> +
> +#ifndef KEXEC_CONTROL_PAGE_SIZE
> +#error KEXEC_CONTROL_PAGE_SIZE not defined
> +#endif
> +
> +#ifndef KEXEC_ARCH
> +#error KEXEC_ARCH not defined
> +#endif
> +
> +#define KEXEC_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
> +#define KEXEC_CORE_NOTE_NAME "CORE"
> +#define KEXEC_CORE_NOTE_NAME_BYTES ALIGN(sizeof(KEXEC_CORE_NOTE_NAME), 4)
> +#define KEXEC_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4)
> +/*
> + * The per-cpu notes area is a list of notes terminated by a "NULL"
> + * note header. For kdump, the code in vmcore.c runs in the context
> + * of the second kernel to combine them into one note.
> + */
> +#define KEXEC_NOTE_BYTES ( (KEXEC_NOTE_HEAD_BYTES * 2) + \
> + KEXEC_CORE_NOTE_NAME_BYTES + \
> + KEXEC_CORE_NOTE_DESC_BYTES )
> +
> +/*
> + * This structure is used to hold the arguments that are used when loading
> + * kernel binaries.
> + */
> +
> +typedef unsigned long kimage_entry_t;
> +#define IND_DESTINATION 0x1
> +#define IND_INDIRECTION 0x2
> +#define IND_DONE 0x4
> +#define IND_SOURCE 0x8
> +
> +#ifdef CONFIG_COMPAT
> +struct compat_kexec_segment {
> + compat_uptr_t buf;
> + compat_size_t bufsz;
> + compat_ulong_t mem; /* User space sees this as a (void *) ... */
> + compat_size_t memsz;
> +};
> +#endif
> +
> +struct kimage {
> + kimage_entry_t head;
> + kimage_entry_t *entry;
> + kimage_entry_t *last_entry;
> +
> + unsigned long destination;
> +
> + unsigned long start;
> + struct page *control_code_page;
> + struct page *swap_page;
> +
> + unsigned long nr_segments;
> + struct kexec_segment segment[KEXEC_SEGMENT_MAX];
> +
> + struct list_head control_pages;
> + struct list_head dest_pages;
> + struct list_head unuseable_pages;
> +
> + /* Address of next control page to allocate for crash kernels. */
> + unsigned long control_page;
> +
> + /* Flags to indicate special processing */
> + unsigned int type : 1;
> +#define KEXEC_TYPE_DEFAULT 0
> +#define KEXEC_TYPE_CRASH 1
> + unsigned int preserve_context : 1;
> +
> +#ifdef ARCH_HAS_KIMAGE_ARCH
> + struct kimage_arch arch;
> +#endif
> +};
> +
> +
> +
> +/* kexec interface functions */
> +extern void machine_kexec(struct kimage *image);
> +extern int machine_kexec_prepare(struct kimage *image);
> +extern void machine_kexec_cleanup(struct kimage *image);
> +extern asmlinkage long sys_kexec_load(unsigned long entry,
> + unsigned long nr_segments,
> + struct kexec_segment __user *segments,
> + unsigned long flags);
> +extern int kernel_kexec(void);
> +#ifdef CONFIG_COMPAT
> +extern asmlinkage long compat_sys_kexec_load(unsigned long entry,
> + unsigned long nr_segments,
> + struct compat_kexec_segment __user *segments,
> + unsigned long flags);
> +#endif
> +extern struct page *kimage_alloc_control_pages(struct kimage *image,
> + unsigned int order);
> +extern void crash_kexec(struct pt_regs *);
> +int kexec_should_crash(struct task_struct *);
> +void crash_save_cpu(struct pt_regs *regs, int cpu);
> +void crash_save_vmcoreinfo(void);
> +void arch_crash_save_vmcoreinfo(void);
> +void vmcoreinfo_append_str(const char *fmt, ...)
> + __attribute__ ((format (printf, 1, 2)));
> +unsigned long paddr_vmcoreinfo_note(void);
> +
> +#define VMCOREINFO_OSRELEASE(value) \
> + vmcoreinfo_append_str("OSRELEASE=%s\n", value)
> +#define VMCOREINFO_PAGESIZE(value) \
> + vmcoreinfo_append_str("PAGESIZE=%ld\n", value)
> +#define VMCOREINFO_SYMBOL(name) \
> + vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name)
> +#define VMCOREINFO_SIZE(name) \
> + vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
> + (unsigned long)sizeof(name))
> +#define VMCOREINFO_STRUCT_SIZE(name) \
> + vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
> + (unsigned long)sizeof(struct name))
> +#define VMCOREINFO_OFFSET(name, field) \
> + vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
> + (unsigned long)offsetof(struct name, field))
> +#define VMCOREINFO_LENGTH(name, value) \
> + vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value)
> +#define VMCOREINFO_NUMBER(name) \
> + vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name)
> +#define VMCOREINFO_CONFIG(name) \
> + vmcoreinfo_append_str("CONFIG_%s=y\n", #name)
> +
> +extern struct kimage *kexec_image;
> +extern struct kimage *kexec_crash_image;
> +
> +#ifndef kexec_flush_icache_page
> +#define kexec_flush_icache_page(page)
> +#endif
> +
> +/* List of defined/legal kexec flags */
> +#ifndef CONFIG_KEXEC_JUMP
> +#define KEXEC_FLAGS KEXEC_ON_CRASH
> +#else
> +#define KEXEC_FLAGS (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)
> +#endif
> +
> +#define VMCOREINFO_BYTES (4096)
> +#define VMCOREINFO_NOTE_NAME "VMCOREINFO"
> +#define VMCOREINFO_NOTE_NAME_BYTES ALIGN(sizeof(VMCOREINFO_NOTE_NAME), 4)
> +#define VMCOREINFO_NOTE_SIZE (KEXEC_NOTE_HEAD_BYTES*2 + VMCOREINFO_BYTES \
> + + VMCOREINFO_NOTE_NAME_BYTES)
> +
> +/* Location of a reserved region to hold the crash kernel.
> + */
> +extern struct resource crashk_res;
> +typedef u32 note_buf_t[KEXEC_NOTE_BYTES/4];
> +extern note_buf_t __percpu *crash_notes;
> +extern u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4];
> +extern size_t vmcoreinfo_size;
> +extern size_t vmcoreinfo_max_size;
> +
> +int __init parse_crashkernel(char *cmdline, unsigned long long system_ram,
> + unsigned long long *crash_size, unsigned long long *crash_base);
> +int crash_shrink_memory(unsigned long new_size);
> +size_t crash_get_memory_size(void);
> +
> +#else /* !CONFIG_KEXEC */
> +struct pt_regs;
> +struct task_struct;
> +static inline void crash_kexec(struct pt_regs *regs) { }
> +static inline int kexec_should_crash(struct task_struct *p) { return 0; }
> +#endif /* CONFIG_KEXEC */
> +#endif /* LINUX_KEXEC_KERNEL_H */
> diff --git a/init/initramfs.c b/init/initramfs.c
> index 4b9c202..fdd68ea 100644
> --- a/init/initramfs.c
> +++ b/init/initramfs.c
> @@ -485,7 +485,7 @@ __setup("retain_initrd", retain_initrd_param);
>
> extern char __initramfs_start[], __initramfs_end[];
> #include <linux/initrd.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
>
> static void __init free_initrd(void)
> {
> diff --git a/kernel/kexec.c b/kernel/kexec.c
> index 474a847..7068e40 100644
> --- a/kernel/kexec.c
> +++ b/kernel/kexec.c
> @@ -11,7 +11,7 @@
> #include <linux/file.h>
> #include <linux/slab.h>
> #include <linux/fs.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/mutex.h>
> #include <linux/list.h>
> #include <linux/highmem.h>
> diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
> index 0b624e7..9fe1a34 100644
> --- a/kernel/ksysfs.c
> +++ b/kernel/ksysfs.c
> @@ -13,7 +13,7 @@
> #include <linux/sysfs.h>
> #include <linux/module.h>
> #include <linux/init.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/profile.h>
> #include <linux/sched.h>
>
> diff --git a/kernel/panic.c b/kernel/panic.c
> index 3b16cd9..af6323f 100644
> --- a/kernel/panic.c
> +++ b/kernel/panic.c
> @@ -8,6 +8,7 @@
> * This function is used through-out the kernel (including mm and fs)
> * to indicate a major problem.
> */
> +#include <linux/kexec_kernel.h>
> #include <linux/debug_locks.h>
> #include <linux/interrupt.h>
> #include <linux/kmsg_dump.h>
> @@ -17,7 +18,6 @@
> #include <linux/random.h>
> #include <linux/reboot.h>
> #include <linux/delay.h>
> -#include <linux/kexec.h>
> #include <linux/sched.h>
> #include <linux/sysrq.h>
> #include <linux/init.h>
> diff --git a/kernel/printk.c b/kernel/printk.c
> index 444b770..a50ceb2 100644
> --- a/kernel/printk.c
> +++ b/kernel/printk.c
> @@ -32,7 +32,7 @@
> #include <linux/security.h>
> #include <linux/bootmem.h>
> #include <linux/syscalls.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/kdb.h>
> #include <linux/ratelimit.h>
> #include <linux/kmsg_dump.h>
> diff --git a/kernel/sys.c b/kernel/sys.c
> index e83ddbb..6559f9b 100644
> --- a/kernel/sys.c
> +++ b/kernel/sys.c
> @@ -16,7 +16,7 @@
> #include <linux/perf_event.h>
> #include <linux/resource.h>
> #include <linux/kernel.h>
> -#include <linux/kexec.h>
> +#include <linux/kexec_kernel.h>
> #include <linux/workqueue.h>
> #include <linux/capability.h>
> #include <linux/device.h>
> --
> 1.6.0.6
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