mirror of https://gitee.com/openkylin/linux.git
tools: Introduce asm-generic/bitops.h
In preparation for moving linux/bitops.h from tools/perf/util/ to tools/include/. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-2wuk8vahl7voz0ie55f07c9k@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#ifndef __TOOLS_ASM_GENERIC_BITOPS_H
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#define __TOOLS_ASM_GENERIC_BITOPS_H
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/*
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* tools/ copied this from include/asm-generic/bitops.h, bit by bit as it needed
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* some functions.
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*
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* For the benefit of those who are trying to port Linux to another
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* architecture, here are some C-language equivalents. You should
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* recode these in the native assembly language, if at all possible.
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*
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* C language equivalents written by Theodore Ts'o, 9/26/92
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*/
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#include <asm-generic/bitops/__ffs.h>
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#include <asm-generic/bitops/find.h>
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#ifndef _TOOLS_LINUX_BITOPS_H_
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#error only <linux/bitops.h> can be included directly
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#endif
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#include <asm-generic/bitops/atomic.h>
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#endif /* __TOOLS_ASM_GENERIC_BITOPS_H */
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@ -7,8 +7,9 @@ tools/lib/symbol/kallsyms.h
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tools/lib/util/find_next_bit.c
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tools/include/asm/bug.h
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tools/include/asm-generic/bitops/atomic.h
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tools/include/asm-generic/bitops/find.h
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tools/include/asm-generic/bitops/__ffs.h
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tools/include/asm-generic/bitops/find.h
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tools/include/asm-generic/bitops.h
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tools/include/linux/compiler.h
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tools/include/linux/export.h
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tools/include/linux/hash.h
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@ -235,6 +235,7 @@ LIB_H += util/include/linux/bitops.h
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LIB_H += ../include/asm-generic/bitops/atomic.h
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LIB_H += ../include/asm-generic/bitops/find.h
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LIB_H += ../include/asm-generic/bitops/__ffs.h
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LIB_H += ../include/asm-generic/bitops.h
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LIB_H += ../include/linux/compiler.h
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LIB_H += ../include/linux/log2.h
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LIB_H += util/include/linux/const.h
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@ -1,5 +1,5 @@
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#ifndef _PERF_LINUX_BITOPS_H_
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#define _PERF_LINUX_BITOPS_H_
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#ifndef _TOOLS_LINUX_BITOPS_H_
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#define _TOOLS_LINUX_BITOPS_H_
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#include <linux/kernel.h>
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#include <linux/compiler.h>
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#define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u32))
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#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE)
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/*
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* Include this here because some architectures need generic_ffs/fls in
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* scope
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*
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* XXX: this needs to be asm/bitops.h, when we get to per arch optimizations
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*/
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#include <asm-generic/bitops.h>
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#define for_each_set_bit(bit, addr, size) \
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for ((bit) = find_first_bit((addr), (size)); \
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(bit) < (size); \
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(bit) < (size); \
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(bit) = find_next_bit((addr), (size), (bit) + 1))
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#include <asm-generic/bitops/atomic.h>
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static inline unsigned long hweight_long(unsigned long w)
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{
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return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
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}
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#include <asm-generic/bitops/__ffs.h>
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#include <asm-generic/bitops/find.h>
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#endif
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