mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-28 21:33:52 +00:00
47d8c15615
find_bit API and bitmap API are closely related, but inclusion paths are different - include/asm-generic and include/linux, correspondingly. In the past it made a lot of troubles due to circular dependencies and/or undefined symbols. Fix this by moving find.h under include/linux. Signed-off-by: Yury Norov <yury.norov@gmail.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
79 lines
1.3 KiB
C
79 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#ifndef __ASM_CSKY_BITOPS_H
|
|
#define __ASM_CSKY_BITOPS_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <asm/barrier.h>
|
|
|
|
/*
|
|
* asm-generic/bitops/ffs.h
|
|
*/
|
|
static inline int ffs(int x)
|
|
{
|
|
if (!x)
|
|
return 0;
|
|
|
|
asm volatile (
|
|
"brev %0\n"
|
|
"ff1 %0\n"
|
|
"addi %0, 1\n"
|
|
: "=&r"(x)
|
|
: "0"(x));
|
|
return x;
|
|
}
|
|
|
|
/*
|
|
* asm-generic/bitops/__ffs.h
|
|
*/
|
|
static __always_inline unsigned long __ffs(unsigned long x)
|
|
{
|
|
asm volatile (
|
|
"brev %0\n"
|
|
"ff1 %0\n"
|
|
: "=&r"(x)
|
|
: "0"(x));
|
|
return x;
|
|
}
|
|
|
|
/*
|
|
* asm-generic/bitops/fls.h
|
|
*/
|
|
static __always_inline int fls(unsigned int x)
|
|
{
|
|
asm volatile(
|
|
"ff1 %0\n"
|
|
: "=&r"(x)
|
|
: "0"(x));
|
|
|
|
return (32 - x);
|
|
}
|
|
|
|
/*
|
|
* asm-generic/bitops/__fls.h
|
|
*/
|
|
static __always_inline unsigned long __fls(unsigned long x)
|
|
{
|
|
return fls(x) - 1;
|
|
}
|
|
|
|
#include <asm-generic/bitops/ffz.h>
|
|
#include <asm-generic/bitops/fls64.h>
|
|
|
|
#ifndef _LINUX_BITOPS_H
|
|
#error only <linux/bitops.h> can be included directly
|
|
#endif
|
|
|
|
#include <asm-generic/bitops/sched.h>
|
|
#include <asm-generic/bitops/hweight.h>
|
|
#include <asm-generic/bitops/lock.h>
|
|
#include <asm-generic/bitops/atomic.h>
|
|
|
|
/*
|
|
* bug fix, why only could use atomic!!!!
|
|
*/
|
|
#include <asm-generic/bitops/non-atomic.h>
|
|
|
|
#include <asm-generic/bitops/le.h>
|
|
#include <asm-generic/bitops/ext2-atomic.h>
|
|
#endif /* __ASM_CSKY_BITOPS_H */
|