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| author | Arnaldo Carvalho de Melo | 2016-07-18 23:13:22 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2016-07-18 23:33:41 +0200 |
| commit | de1e17b1d0c81be472039798698b517c8a68b516 (patch) | |
| tree | 62dd99a543f9f37fb390be7ffc393907b9b82a1c /tools/include/asm-generic/bitops/const_hweight.h | |
| parent | Remove: kernel unistd*h files from perf's MANIFEST, not used (diff) | |
| download | kernel-qcow2-linux-de1e17b1d0c81be472039798698b517c8a68b516.tar.gz kernel-qcow2-linux-de1e17b1d0c81be472039798698b517c8a68b516.tar.xz kernel-qcow2-linux-de1e17b1d0c81be472039798698b517c8a68b516.zip | |
tools: Copy the bitops files accessed from the kernel and check for drift
copy some more kernel files accessed from tools/, check for drift.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-omz8xdyvvxgjiuqzwj6ecm6j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include/asm-generic/bitops/const_hweight.h')
| -rw-r--r-- | tools/include/asm-generic/bitops/const_hweight.h | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/tools/include/asm-generic/bitops/const_hweight.h b/tools/include/asm-generic/bitops/const_hweight.h index 0afd644aff83..0a7e06623470 100644 --- a/tools/include/asm-generic/bitops/const_hweight.h +++ b/tools/include/asm-generic/bitops/const_hweight.h @@ -1 +1,43 @@ -#include "../../../../include/asm-generic/bitops/const_hweight.h" +#ifndef _ASM_GENERIC_BITOPS_CONST_HWEIGHT_H_ +#define _ASM_GENERIC_BITOPS_CONST_HWEIGHT_H_ + +/* + * Compile time versions of __arch_hweightN() + */ +#define __const_hweight8(w) \ + ((unsigned int) \ + ((!!((w) & (1ULL << 0))) + \ + (!!((w) & (1ULL << 1))) + \ + (!!((w) & (1ULL << 2))) + \ + (!!((w) & (1ULL << 3))) + \ + (!!((w) & (1ULL << 4))) + \ + (!!((w) & (1ULL << 5))) + \ + (!!((w) & (1ULL << 6))) + \ + (!!((w) & (1ULL << 7))))) + +#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 )) +#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16)) +#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32)) + +/* + * Generic interface. + */ +#define hweight8(w) (__builtin_constant_p(w) ? __const_hweight8(w) : __arch_hweight8(w)) +#define hweight16(w) (__builtin_constant_p(w) ? __const_hweight16(w) : __arch_hweight16(w)) +#define hweight32(w) (__builtin_constant_p(w) ? __const_hweight32(w) : __arch_hweight32(w)) +#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w)) + +/* + * Interface for known constant arguments + */ +#define HWEIGHT8(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight8(w)) +#define HWEIGHT16(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight16(w)) +#define HWEIGHT32(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight32(w)) +#define HWEIGHT64(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight64(w)) + +/* + * Type invariant interface to the compile time constant hweight functions. + */ +#define HWEIGHT(w) HWEIGHT64((u64)w) + +#endif /* _ASM_GENERIC_BITOPS_CONST_HWEIGHT_H_ */ |