mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-02 23:27:06 +00:00
811f35ff59
To pick up the changes in this cset:
cbdb1f163a ("vdso/bits.h: Add BIT_ULL() for the sake of consistency")
That just causes perf to rebuild, the macro included doesn't clash with
anything in tools/{perf,objtool,bpf}.
This addresses this perf build warning:
Warning: Kernel ABI header at 'tools/include/linux/bits.h' differs from latest version at 'include/linux/bits.h'
diff -u tools/include/linux/bits.h include/linux/bits.h
Warning: Kernel ABI header at 'tools/include/vdso/bits.h' differs from latest version at 'include/vdso/bits.h'
diff -u tools/include/vdso/bits.h include/vdso/bits.h
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __LINUX_BITS_H
|
|
#define __LINUX_BITS_H
|
|
|
|
#include <linux/const.h>
|
|
#include <vdso/bits.h>
|
|
#include <asm/bitsperlong.h>
|
|
|
|
#define BIT_MASK(nr) (UL(1) << ((nr) % BITS_PER_LONG))
|
|
#define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
|
|
#define BIT_ULL_MASK(nr) (ULL(1) << ((nr) % BITS_PER_LONG_LONG))
|
|
#define BIT_ULL_WORD(nr) ((nr) / BITS_PER_LONG_LONG)
|
|
#define BITS_PER_BYTE 8
|
|
|
|
/*
|
|
* Create a contiguous bitmask starting at bit position @l and ending at
|
|
* position @h. For example
|
|
* GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000.
|
|
*/
|
|
#if !defined(__ASSEMBLY__)
|
|
#include <linux/build_bug.h>
|
|
#define GENMASK_INPUT_CHECK(h, l) \
|
|
(BUILD_BUG_ON_ZERO(__builtin_choose_expr( \
|
|
__is_constexpr((l) > (h)), (l) > (h), 0)))
|
|
#else
|
|
/*
|
|
* BUILD_BUG_ON_ZERO is not available in h files included from asm files,
|
|
* disable the input check if that is the case.
|
|
*/
|
|
#define GENMASK_INPUT_CHECK(h, l) 0
|
|
#endif
|
|
|
|
#define __GENMASK(h, l) \
|
|
(((~UL(0)) - (UL(1) << (l)) + 1) & \
|
|
(~UL(0) >> (BITS_PER_LONG - 1 - (h))))
|
|
#define GENMASK(h, l) \
|
|
(GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
|
|
|
|
#define __GENMASK_ULL(h, l) \
|
|
(((~ULL(0)) - (ULL(1) << (l)) + 1) & \
|
|
(~ULL(0) >> (BITS_PER_LONG_LONG - 1 - (h))))
|
|
#define GENMASK_ULL(h, l) \
|
|
(GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l))
|
|
|
|
#endif /* __LINUX_BITS_H */
|