Commit 66a5c40f authored by Tanzir Hasan's avatar Tanzir Hasan Committed by Kees Cook
Browse files

kernel.h: removed REPEAT_BYTE from kernel.h 



This patch creates wordpart.h and includes it in asm/word-at-a-time.h
for all architectures. WORD_AT_A_TIME_CONSTANTS depends on kernel.h
because of REPEAT_BYTE. Moving this to another header and including it
where necessary allows us to not include the bloated kernel.h. Making
this implicit dependency on REPEAT_BYTE explicit allows for later
improvements in the lib/string.c inclusion list.

Suggested-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Suggested-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: default avatarTanzir Hasan <tanzirh@google.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231226-libstringheader-v6-1-80aa08c7652c@google.com


Signed-off-by: default avatarKees Cook <keescook@chromium.org>
parent 735b7636

arch/arm/include/asm/word-at-a-time.h

+2 −1
Original line number Diff line number Diff line
@@ -8,7 +8,8 @@ 
 * Little-endian word-at-a-time zero byte handling.

 * Heavily based on the x86 algorithm.

 */

#include <linux/kernel.h>

#include <linux/bitops.h>

#include <linux/wordpart.h>



struct word_at_a_time {

	const unsigned long one_bits, high_bits;

arch/arm64/include/asm/word-at-a-time.h

+2 −1
Original line number Diff line number Diff line
@@ -9,7 +9,8 @@ 


#ifndef __AARCH64EB__



#include <linux/kernel.h>

#include <linux/bitops.h>

#include <linux/wordpart.h>



struct word_at_a_time {

	const unsigned long one_bits, high_bits;

arch/powerpc/include/asm/word-at-a-time.h

+2 −2
Original line number Diff line number Diff line
@@ -4,8 +4,8 @@ 
/*

 * Word-at-a-time interfaces for PowerPC.

 */



#include <linux/kernel.h>

#include <linux/bitops.h>

#include <linux/wordpart.h>

#include <asm/asm-compat.h>

#include <asm/extable.h>

arch/riscv/include/asm/word-at-a-time.h

+2 −1
Original line number Diff line number Diff line
@@ -10,7 +10,8 @@ 




#include <asm/asm-extable.h>

#include <linux/kernel.h>

#include <linux/bitops.h>

#include <linux/wordpart.h>



struct word_at_a_time {

	const unsigned long one_bits, high_bits;

arch/s390/include/asm/word-at-a-time.h

+2 −1
Original line number Diff line number Diff line
@@ -2,7 +2,8 @@ 
#ifndef _ASM_WORD_AT_A_TIME_H

#define _ASM_WORD_AT_A_TIME_H



#include <linux/kernel.h>

#include <linux/bitops.h>

#include <linux/wordpart.h>

#include <asm/asm-extable.h>

#include <asm/bitsperlong.h>