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Date: Fri, 16 Jul 2021 11:03:41 +0200
From: Anders Roxell <anders.roxell@...aro.org>
To: Alexey Dobriyan <adobriyan@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-arch@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
Masahiro Yamada <masahiroy@...nel.org>, hch@...radead.org,
Linux-Next Mailing List <linux-next@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH v2] Decouple build from userspace headers
On Wed, 14 Jul 2021 at 19:45, Alexey Dobriyan <adobriyan@...il.com> wrote:
>
> First, userspace headers can be under incompatible license.
>
> Second, kernel doesn't require userspace to operate and should not
> require anything from userspace to be built other than compiler.
> We would use -ffreestanding too if not builtin function shenanigans.
>
> To decouple:
>
> * ship minimal stdarg.h as <linux/stdarg.h>,
> 1 type, 4 macros
>
> GPL 2 version of <stdarg.h> can be extracted from
> http://archive.debian.org/debian/pool/main/g/gcc-4.2/gcc-4.2_4.2.4.orig.tar.gz
>
> * delete "-isystem" from command line arguments,
> this is what enables header leakage
>
> * fixup/delete include directives where necessary.
>
> Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
This patch was included into todays next tag next-20210716 and when I
build an arm64 allmodconfig
kernel I see the following error:
# to reproduce this build locally: tuxmake --target-arch=arm64
--kconfig=allmodconfig --toolchain=gcc-11 --wrapper=none
--environment=KBUILD_BUILD_TIMESTAMP=@...6414793
--environment=KBUILD_BUILD_USER=tuxmake
--environment=KBUILD_BUILD_HOST=tuxmake --runtime=podman
--image=docker.io/tuxmake/arm64_gcc-11
KCONFIG_ALLCONFIG=arch/arm64/configs/defconfig config default kernel
modules
make --silent --keep-going --jobs=32
O=/home/anders/.cache/tuxmake/builds/current
KCONFIG_ALLCONFIG=arch/arm64/configs/defconfig ARCH=arm64
CROSS_COMPILE=aarch64-linux-gnu- allmodconfig
make --silent --keep-going --jobs=32
O=/home/anders/.cache/tuxmake/builds/current
KCONFIG_ALLCONFIG=arch/arm64/configs/defconfig ARCH=arm64
CROSS_COMPILE=aarch64-linux-gnu-
In file included from
/home/anders/src/kernel/testing/crypto/aegis128-neon-inner.c:7:
/home/anders/src/kernel/testing/arch/arm64/include/asm/neon-intrinsics.h:33:10:
fatal error: arm_neon.h: No such file or directory
33 | #include <arm_neon.h>
| ^~~~~~~~~~~~
compilation terminated.
make[2]: *** [/home/anders/src/kernel/testing/scripts/Makefile.build:272:
crypto/aegis128-neon-inner.o] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [/home/anders/src/kernel/testing/Makefile:1990: crypto] Error 2
make[1]: Target '__all' not remade because of errors.
make: *** [Makefile:227: __sub-make] Error 2
make: Target '__all' not remade because of errors.
If I revert this patch I can build it.
Cheers,
Anders
> ---
>
> Makefile | 2 -
> arch/arm/kernel/process.c | 2 -
> arch/arm/mach-bcm/bcm_kona_smc.c | 2 -
> arch/arm64/kernel/process.c | 3 --
> arch/openrisc/kernel/process.c | 2 -
> arch/parisc/kernel/firmware.c | 2 -
> arch/parisc/kernel/process.c | 3 --
> arch/powerpc/kernel/prom.c | 1
> arch/powerpc/kernel/prom_init.c | 2 -
> arch/powerpc/kernel/rtas.c | 2 -
> arch/powerpc/kernel/udbg.c | 2 -
> arch/s390/boot/pgm_check_info.c | 2 -
> arch/sparc/kernel/process_32.c | 3 --
> arch/sparc/kernel/process_64.c | 3 --
> arch/um/include/shared/irq_user.h | 1
> arch/um/include/shared/os.h | 1
> arch/um/os-Linux/signal.c | 2 -
> arch/um/os-Linux/util.c | 1
> arch/x86/boot/boot.h | 2 -
> crypto/aegis128-neon-inner.c | 2 -
> drivers/block/xen-blkback/xenbus.c | 1
> drivers/firmware/efi/libstub/efi-stub-helper.c | 2 -
> drivers/firmware/efi/libstub/vsprintf.c | 2 -
> drivers/gpu/drm/amd/display/dc/dc_helper.c | 2 -
> drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 1
> drivers/gpu/drm/drm_print.c | 2 -
> drivers/gpu/drm/msm/disp/msm_disp_snapshot.h | 1
> drivers/isdn/capi/capiutil.c | 2 -
> drivers/macintosh/macio-adb.c | 1
> drivers/macintosh/via-cuda.c | 2 -
> drivers/macintosh/via-macii.c | 2 -
> drivers/macintosh/via-pmu.c | 2 -
> drivers/net/wireless/intersil/orinoco/hermes.c | 1
> drivers/net/wwan/iosm/iosm_ipc_imem.h | 1
> drivers/pinctrl/aspeed/pinmux-aspeed.h | 1
> drivers/scsi/elx/efct/efct_driver.h | 1
> drivers/staging/media/atomisp/pci/hive_isp_css_common/host/isp_local.h | 2 -
> drivers/staging/media/atomisp/pci/hive_isp_css_include/print_support.h | 2 -
> drivers/staging/media/atomisp/pci/ia_css_env.h | 2 -
> drivers/staging/media/atomisp/pci/runtime/debug/interface/ia_css_debug.h | 2 -
> drivers/staging/media/atomisp/pci/sh_css_internal.h | 2 -
> drivers/xen/xen-scsiback.c | 2 -
> fs/befs/debug.c | 2 -
> fs/reiserfs/prints.c | 2 -
> fs/ufs/super.c | 2 -
> include/acpi/platform/acgcc.h | 2 -
> include/linux/filter.h | 2 -
> include/linux/kernel.h | 2 -
> include/linux/mISDNif.h | 1
> include/linux/printk.h | 2 -
> include/linux/stdarg.h | 11 ++++++++++
> include/linux/string.h | 2 -
> kernel/debug/kdb/kdb_support.c | 1
> lib/debug_info.c | 3 --
> lib/kasprintf.c | 2 -
> lib/kunit/string-stream.h | 2 -
> lib/vsprintf.c | 2 -
> mm/kfence/report.c | 2 -
> net/batman-adv/log.c | 2 -
> sound/aoa/codecs/onyx.h | 1
> sound/aoa/codecs/tas.c | 1
> sound/core/info.c | 1
> 62 files changed, 44 insertions(+), 77 deletions(-)
>
> --- a/Makefile
> +++ b/Makefile
> @@ -978,7 +978,7 @@ KBUILD_CFLAGS += -falign-functions=64
> endif
>
> # arch Makefile may override CC so keep this after arch Makefile is included
> -NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
> +NOSTDINC_FLAGS += -nostdinc
>
> # warn about C99 declaration after statement
> KBUILD_CFLAGS += -Wdeclaration-after-statement
> --- a/arch/arm/kernel/process.c
> +++ b/arch/arm/kernel/process.c
> @@ -5,8 +5,6 @@
> * Copyright (C) 1996-2000 Russell King - Converted to ARM.
> * Original Copyright (C) 1995 Linus Torvalds
> */
> -#include <stdarg.h>
> -
> #include <linux/export.h>
> #include <linux/sched.h>
> #include <linux/sched/debug.h>
> --- a/arch/arm/mach-bcm/bcm_kona_smc.c
> +++ b/arch/arm/mach-bcm/bcm_kona_smc.c
> @@ -10,8 +10,6 @@
> * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> * GNU General Public License for more details.
> */
> -
> -#include <stdarg.h>
> #include <linux/smp.h>
> #include <linux/io.h>
> #include <linux/ioport.h>
> --- a/arch/arm64/kernel/process.c
> +++ b/arch/arm64/kernel/process.c
> @@ -6,9 +6,6 @@
> * Copyright (C) 1996-2000 Russell King - Converted to ARM.
> * Copyright (C) 2012 ARM Ltd.
> */
> -
> -#include <stdarg.h>
> -
> #include <linux/compat.h>
> #include <linux/efi.h>
> #include <linux/elf.h>
> --- a/arch/openrisc/kernel/process.c
> +++ b/arch/openrisc/kernel/process.c
> @@ -14,8 +14,6 @@
> */
>
> #define __KERNEL_SYSCALLS__
> -#include <stdarg.h>
> -
> #include <linux/errno.h>
> #include <linux/sched.h>
> #include <linux/sched/debug.h>
> --- a/arch/parisc/kernel/firmware.c
> +++ b/arch/parisc/kernel/firmware.c
> @@ -51,7 +51,7 @@
> * prumpf 991016
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #include <linux/delay.h>
> #include <linux/init.h>
> --- a/arch/parisc/kernel/process.c
> +++ b/arch/parisc/kernel/process.c
> @@ -17,9 +17,6 @@
> * Copyright (C) 2001-2014 Helge Deller <deller@....de>
> * Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
> */
> -
> -#include <stdarg.h>
> -
> #include <linux/elf.h>
> #include <linux/errno.h>
> #include <linux/kernel.h>
> --- a/arch/powerpc/kernel/prom.c
> +++ b/arch/powerpc/kernel/prom.c
> @@ -11,7 +11,6 @@
>
> #undef DEBUG
>
> -#include <stdarg.h>
> #include <linux/kernel.h>
> #include <linux/string.h>
> #include <linux/init.h>
> --- a/arch/powerpc/kernel/prom_init.c
> +++ b/arch/powerpc/kernel/prom_init.c
> @@ -14,7 +14,7 @@
> /* we cannot use FORTIFY as it brings in new symbols */
> #define __NO_FORTIFY
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/kernel.h>
> #include <linux/string.h>
> #include <linux/init.h>
> --- a/arch/powerpc/kernel/rtas.c
> +++ b/arch/powerpc/kernel/rtas.c
> @@ -7,7 +7,7 @@
> * Copyright (C) 2001 IBM.
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/kernel.h>
> #include <linux/types.h>
> #include <linux/spinlock.h>
> --- a/arch/powerpc/kernel/udbg.c
> +++ b/arch/powerpc/kernel/udbg.c
> @@ -5,7 +5,7 @@
> * c 2001 PPC 64 Team, IBM Corp
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/types.h>
> #include <linux/sched.h>
> #include <linux/console.h>
> --- a/arch/s390/boot/pgm_check_info.c
> +++ b/arch/s390/boot/pgm_check_info.c
> @@ -1,5 +1,6 @@
> // SPDX-License-Identifier: GPL-2.0
> #include <linux/kernel.h>
> +#include <linux/stdarg.h>
> #include <linux/string.h>
> #include <linux/ctype.h>
> #include <asm/stacktrace.h>
> @@ -8,7 +9,6 @@
> #include <asm/setup.h>
> #include <asm/sclp.h>
> #include <asm/uv.h>
> -#include <stdarg.h>
> #include "boot.h"
>
> const char hex_asc[] = "0123456789abcdef";
> --- a/arch/sparc/kernel/process_32.c
> +++ b/arch/sparc/kernel/process_32.c
> @@ -8,9 +8,6 @@
> /*
> * This file handles the architecture-dependent parts of process handling..
> */
> -
> -#include <stdarg.h>
> -
> #include <linux/elfcore.h>
> #include <linux/errno.h>
> #include <linux/module.h>
> --- a/arch/sparc/kernel/process_64.c
> +++ b/arch/sparc/kernel/process_64.c
> @@ -9,9 +9,6 @@
> /*
> * This file handles the architecture-dependent parts of process handling..
> */
> -
> -#include <stdarg.h>
> -
> #include <linux/errno.h>
> #include <linux/export.h>
> #include <linux/sched.h>
> --- a/arch/um/include/shared/irq_user.h
> +++ b/arch/um/include/shared/irq_user.h
> @@ -7,7 +7,6 @@
> #define __IRQ_USER_H__
>
> #include <sysdep/ptrace.h>
> -#include <stdbool.h>
>
> enum um_irq_type {
> IRQ_READ,
> --- a/arch/um/include/shared/os.h
> +++ b/arch/um/include/shared/os.h
> @@ -8,7 +8,6 @@
> #ifndef __OS_H__
> #define __OS_H__
>
> -#include <stdarg.h>
> #include <irq_user.h>
> #include <longjmp.h>
> #include <mm_id.h>
> --- a/arch/um/os-Linux/signal.c
> +++ b/arch/um/os-Linux/signal.c
> @@ -67,7 +67,7 @@ int signals_enabled;
> #ifdef UML_CONFIG_UML_TIME_TRAVEL_SUPPORT
> static int signals_blocked;
> #else
> -#define signals_blocked false
> +#define signals_blocked 0
> #endif
> static unsigned int signals_pending;
> static unsigned int signals_active = 0;
> --- a/arch/um/os-Linux/util.c
> +++ b/arch/um/os-Linux/util.c
> @@ -3,6 +3,7 @@
> * Copyright (C) 2000 - 2007 Jeff Dike (jdike@...dtoit,linux.intel}.com)
> */
>
> +#include <stdarg.h>
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
> --- a/arch/x86/boot/boot.h
> +++ b/arch/x86/boot/boot.h
> @@ -18,7 +18,7 @@
>
> #ifndef __ASSEMBLY__
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/types.h>
> #include <linux/edd.h>
> #include <asm/setup.h>
> --- a/crypto/aegis128-neon-inner.c
> +++ b/crypto/aegis128-neon-inner.c
> @@ -15,8 +15,6 @@
>
> #define AEGIS_BLOCK_SIZE 16
>
> -#include <stddef.h>
> -
> extern int aegis128_have_aes_insn;
>
> void *memcpy(void *dest, const void *src, size_t n);
> --- a/drivers/block/xen-blkback/xenbus.c
> +++ b/drivers/block/xen-blkback/xenbus.c
> @@ -8,7 +8,6 @@
>
> #define pr_fmt(fmt) "xen-blkback: " fmt
>
> -#include <stdarg.h>
> #include <linux/module.h>
> #include <linux/kthread.h>
> #include <xen/events.h>
> --- a/drivers/firmware/efi/libstub/efi-stub-helper.c
> +++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
> @@ -7,7 +7,7 @@
> * Copyright 2011 Intel Corporation; author Matt Fleming
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #include <linux/ctype.h>
> #include <linux/efi.h>
> --- a/drivers/firmware/efi/libstub/vsprintf.c
> +++ b/drivers/firmware/efi/libstub/vsprintf.c
> @@ -10,7 +10,7 @@
> * Oh, it's a waste of space, but oh-so-yummy for debugging.
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #include <linux/compiler.h>
> #include <linux/ctype.h>
> --- a/drivers/gpu/drm/amd/display/dc/dc_helper.c
> +++ b/drivers/gpu/drm/amd/display/dc/dc_helper.c
> @@ -28,9 +28,9 @@
> */
>
> #include <linux/delay.h>
> +#include <linux/stdarg.h>
>
> #include "dm_services.h"
> -#include <stdarg.h>
>
> #include "dc.h"
> #include "dc_dmub_srv.h"
> --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
> +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
> @@ -39,7 +39,6 @@
> #include <linux/types.h>
> #include <linux/string.h>
> #include <linux/delay.h>
> -#include <stdarg.h>
>
> #include "atomfirmware.h"
>
> --- a/drivers/gpu/drm/drm_print.c
> +++ b/drivers/gpu/drm/drm_print.c
> @@ -25,7 +25,7 @@
>
> #define DEBUG /* for pr_debug() */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #include <linux/io.h>
> #include <linux/moduleparam.h>
> --- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot.h
> +++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot.h
> @@ -25,7 +25,6 @@
> #include <linux/pm_runtime.h>
> #include <linux/kthread.h>
> #include <linux/devcoredump.h>
> -#include <stdarg.h>
> #include "msm_kms.h"
>
> #define MSM_DISP_SNAPSHOT_MAX_BLKS 10
> --- a/drivers/isdn/capi/capiutil.c
> +++ b/drivers/isdn/capi/capiutil.c
> @@ -379,7 +379,7 @@ static char *pnames[] =
> /*2f */ "Useruserdata"
> };
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> /*-------------------------------------------------------*/
> static _cdebbuf *bufprint(_cdebbuf *cdb, char *fmt, ...)
> --- a/drivers/macintosh/macio-adb.c
> +++ b/drivers/macintosh/macio-adb.c
> @@ -2,7 +2,6 @@
> /*
> * Driver for the ADB controller in the Mac I/O (Hydra) chip.
> */
> -#include <stdarg.h>
> #include <linux/types.h>
> #include <linux/errno.h>
> #include <linux/kernel.h>
> --- a/drivers/macintosh/via-cuda.c
> +++ b/drivers/macintosh/via-cuda.c
> @@ -9,7 +9,7 @@
> *
> * Copyright (C) 1996 Paul Mackerras.
> */
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/types.h>
> #include <linux/errno.h>
> #include <linux/kernel.h>
> --- a/drivers/macintosh/via-macii.c
> +++ b/drivers/macintosh/via-macii.c
> @@ -23,8 +23,6 @@
> * Apple's "ADB Analyzer" bus sniffer is invaluable:
> * ftp://ftp.apple.com/developer/Tool_Chest/Devices_-_Hardware/Apple_Desktop_Bus/
> */
> -
> -#include <stdarg.h>
> #include <linux/types.h>
> #include <linux/errno.h>
> #include <linux/kernel.h>
> --- a/drivers/macintosh/via-pmu.c
> +++ b/drivers/macintosh/via-pmu.c
> @@ -18,7 +18,7 @@
> * a sleep or a freq. switch
> *
> */
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/mutex.h>
> #include <linux/types.h>
> #include <linux/errno.h>
> --- a/drivers/net/wireless/intersil/orinoco/hermes.c
> +++ b/drivers/net/wireless/intersil/orinoco/hermes.c
> @@ -79,7 +79,6 @@
>
> #undef HERMES_DEBUG
> #ifdef HERMES_DEBUG
> -#include <stdarg.h>
>
> #define DEBUG(lvl, stuff...) if ((lvl) <= HERMES_DEBUG) DMSG(stuff)
>
> --- a/drivers/net/wwan/iosm/iosm_ipc_imem.h
> +++ b/drivers/net/wwan/iosm/iosm_ipc_imem.h
> @@ -7,7 +7,6 @@
> #define IOSM_IPC_IMEM_H
>
> #include <linux/skbuff.h>
> -#include <stdbool.h>
>
> #include "iosm_ipc_mmio.h"
> #include "iosm_ipc_pcie.h"
> --- a/drivers/pinctrl/aspeed/pinmux-aspeed.h
> +++ b/drivers/pinctrl/aspeed/pinmux-aspeed.h
> @@ -5,7 +5,6 @@
> #define ASPEED_PINMUX_H
>
> #include <linux/regmap.h>
> -#include <stdbool.h>
>
> /*
> * The ASPEED SoCs provide typically more than 200 pins for GPIO and other
> --- a/drivers/scsi/elx/efct/efct_driver.h
> +++ b/drivers/scsi/elx/efct/efct_driver.h
> @@ -10,7 +10,6 @@
> /***************************************************************************
> * OS specific includes
> */
> -#include <stdarg.h>
> #include <linux/module.h>
> #include <linux/debugfs.h>
> #include <linux/firmware.h>
> --- a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/isp_local.h
> +++ b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/isp_local.h
> @@ -16,8 +16,6 @@
> #ifndef __ISP_LOCAL_H_INCLUDED__
> #define __ISP_LOCAL_H_INCLUDED__
>
> -#include <stdbool.h>
> -
> #include "isp_global.h"
>
> #include <isp2400_support.h>
> --- a/drivers/staging/media/atomisp/pci/hive_isp_css_include/print_support.h
> +++ b/drivers/staging/media/atomisp/pci/hive_isp_css_include/print_support.h
> @@ -16,7 +16,7 @@
> #ifndef __PRINT_SUPPORT_H_INCLUDED__
> #define __PRINT_SUPPORT_H_INCLUDED__
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> extern int (*sh_css_printf)(const char *fmt, va_list args);
> /* depends on host supplied print function in ia_css_init() */
> --- a/drivers/staging/media/atomisp/pci/ia_css_env.h
> +++ b/drivers/staging/media/atomisp/pci/ia_css_env.h
> @@ -17,7 +17,7 @@
> #define __IA_CSS_ENV_H
>
> #include <type_support.h>
> -#include <stdarg.h> /* va_list */
> +#include <linux/stdarg.h> /* va_list */
> #include "ia_css_types.h"
> #include "ia_css_acc_types.h"
>
> --- a/drivers/staging/media/atomisp/pci/runtime/debug/interface/ia_css_debug.h
> +++ b/drivers/staging/media/atomisp/pci/runtime/debug/interface/ia_css_debug.h
> @@ -19,7 +19,7 @@
> /*! \file */
>
> #include <type_support.h>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include "ia_css_types.h"
> #include "ia_css_binary.h"
> #include "ia_css_frame_public.h"
> --- a/drivers/staging/media/atomisp/pci/sh_css_internal.h
> +++ b/drivers/staging/media/atomisp/pci/sh_css_internal.h
> @@ -20,7 +20,7 @@
> #include <math_support.h>
> #include <type_support.h>
> #include <platform_support.h>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #if !defined(ISP2401)
> #include "input_formatter.h"
> --- a/drivers/xen/xen-scsiback.c
> +++ b/drivers/xen/xen-scsiback.c
> @@ -33,8 +33,6 @@
>
> #define pr_fmt(fmt) "xen-pvscsi: " fmt
>
> -#include <stdarg.h>
> -
> #include <linux/module.h>
> #include <linux/utsname.h>
> #include <linux/interrupt.h>
> --- a/fs/befs/debug.c
> +++ b/fs/befs/debug.c
> @@ -14,7 +14,7 @@
> #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> #ifdef __KERNEL__
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/string.h>
> #include <linux/spinlock.h>
> #include <linux/kernel.h>
> --- a/fs/reiserfs/prints.c
> +++ b/fs/reiserfs/prints.c
> @@ -8,7 +8,7 @@
> #include <linux/string.h>
> #include <linux/buffer_head.h>
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> static char error_buf[1024];
> static char fmt_buf[1024];
> --- a/fs/ufs/super.c
> +++ b/fs/ufs/super.c
> @@ -70,7 +70,7 @@
> #include <linux/module.h>
> #include <linux/bitops.h>
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #include <linux/uaccess.h>
>
> --- a/include/acpi/platform/acgcc.h
> +++ b/include/acpi/platform/acgcc.h
> @@ -22,7 +22,7 @@ typedef __builtin_va_list va_list;
> #define va_arg(v, l) __builtin_va_arg(v, l)
> #define va_copy(d, s) __builtin_va_copy(d, s)
> #else
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #endif
> #endif
>
> --- a/include/linux/filter.h
> +++ b/include/linux/filter.h
> @@ -5,8 +5,6 @@
> #ifndef __LINUX_FILTER_H__
> #define __LINUX_FILTER_H__
>
> -#include <stdarg.h>
> -
> #include <linux/atomic.h>
> #include <linux/refcount.h>
> #include <linux/compat.h>
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -2,7 +2,7 @@
> #ifndef _LINUX_KERNEL_H
> #define _LINUX_KERNEL_H
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/align.h>
> #include <linux/limits.h>
> #include <linux/linkage.h>
> --- a/include/linux/mISDNif.h
> +++ b/include/linux/mISDNif.h
> @@ -18,7 +18,6 @@
> #ifndef mISDNIF_H
> #define mISDNIF_H
>
> -#include <stdarg.h>
> #include <linux/types.h>
> #include <linux/errno.h>
> #include <linux/socket.h>
> --- a/include/linux/printk.h
> +++ b/include/linux/printk.h
> @@ -2,7 +2,7 @@
> #ifndef __KERNEL_PRINTK__
> #define __KERNEL_PRINTK__
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/init.h>
> #include <linux/kern_levels.h>
> #include <linux/linkage.h>
> new file mode 100644
> --- /dev/null
> +++ b/include/linux/stdarg.h
> @@ -0,0 +1,11 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +#ifndef _LINUX_STDARG_H
> +#define _LINUX_STDARG_H
> +
> +typedef __builtin_va_list va_list;
> +#define va_start(v, l) __builtin_va_start(v, l)
> +#define va_end(v) __builtin_va_end(v)
> +#define va_arg(v, T) __builtin_va_arg(v, T)
> +#define va_copy(d, s) __builtin_va_copy(d, s)
> +
> +#endif
> --- a/include/linux/string.h
> +++ b/include/linux/string.h
> @@ -6,7 +6,7 @@
> #include <linux/types.h> /* for size_t */
> #include <linux/stddef.h> /* for NULL */
> #include <linux/errno.h> /* for E2BIG */
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <uapi/linux/string.h>
>
> extern char *strndup_user(const char __user *, long);
> --- a/kernel/debug/kdb/kdb_support.c
> +++ b/kernel/debug/kdb/kdb_support.c
> @@ -10,7 +10,6 @@
> * 03/02/13 added new 2.5 kallsyms <xavier.bru@...l.net>
> */
>
> -#include <stdarg.h>
> #include <linux/types.h>
> #include <linux/sched.h>
> #include <linux/mm.h>
> --- a/lib/debug_info.c
> +++ b/lib/debug_info.c
> @@ -5,8 +5,6 @@
> * CONFIG_DEBUG_INFO_REDUCED. Please do not add actual code. However,
> * adding appropriate #includes is fine.
> */
> -#include <stdarg.h>
> -
> #include <linux/cred.h>
> #include <linux/crypto.h>
> #include <linux/dcache.h>
> @@ -22,6 +20,7 @@
> #include <linux/net.h>
> #include <linux/sched.h>
> #include <linux/slab.h>
> +#include <linux/stdarg.h>
> #include <linux/types.h>
> #include <net/addrconf.h>
> #include <net/sock.h>
> --- a/lib/kasprintf.c
> +++ b/lib/kasprintf.c
> @@ -5,7 +5,7 @@
> * Copyright (C) 1991, 1992 Linus Torvalds
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/export.h>
> #include <linux/slab.h>
> #include <linux/types.h>
> --- a/lib/kunit/string-stream.h
> +++ b/lib/kunit/string-stream.h
> @@ -11,7 +11,7 @@
>
> #include <linux/spinlock.h>
> #include <linux/types.h>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> struct string_stream_fragment {
> struct kunit *test;
> --- a/lib/vsprintf.c
> +++ b/lib/vsprintf.c
> @@ -17,7 +17,7 @@
> * - scnprintf and vscnprintf
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
> #include <linux/build_bug.h>
> #include <linux/clk.h>
> #include <linux/clk-provider.h>
> --- a/mm/kfence/report.c
> +++ b/mm/kfence/report.c
> @@ -5,7 +5,7 @@
> * Copyright (C) 2020, Google LLC.
> */
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #include <linux/kernel.h>
> #include <linux/lockdep.h>
> --- a/net/batman-adv/log.c
> +++ b/net/batman-adv/log.c
> @@ -7,7 +7,7 @@
> #include "log.h"
> #include "main.h"
>
> -#include <stdarg.h>
> +#include <linux/stdarg.h>
>
> #include "trace.h"
>
> --- a/sound/aoa/codecs/onyx.h
> +++ b/sound/aoa/codecs/onyx.h
> @@ -6,7 +6,6 @@
> */
> #ifndef __SND_AOA_CODEC_ONYX_H
> #define __SND_AOA_CODEC_ONYX_H
> -#include <stddef.h>
> #include <linux/i2c.h>
> #include <asm/pmac_low_i2c.h>
> #include <asm/prom.h>
> --- a/sound/aoa/codecs/tas.c
> +++ b/sound/aoa/codecs/tas.c
> @@ -58,7 +58,6 @@
> * and up to the hardware designer to not wire
> * them up in some weird unusable way.
> */
> -#include <stddef.h>
> #include <linux/i2c.h>
> #include <asm/pmac_low_i2c.h>
> #include <asm/prom.h>
> --- a/sound/core/info.c
> +++ b/sound/core/info.c
> @@ -16,7 +16,6 @@
> #include <linux/utsname.h>
> #include <linux/proc_fs.h>
> #include <linux/mutex.h>
> -#include <stdarg.h>
>
> int snd_info_check_reserved_words(const char *str)
> {
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