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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2014-12-16 10:53:27 -03:00
parent 23e1a358e8
commit 88bcea43fd
4 changed files with 37 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
tools/include/asm-generic/bitops.h Normal file
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@ -0,0 +1,24 @@
#ifndef __TOOLS_ASM_GENERIC_BITOPS_H
#define __TOOLS_ASM_GENERIC_BITOPS_H
/*
* tools/ copied this from include/asm-generic/bitops.h, bit by bit as it needed
* some functions.
*
* For the benefit of those who are trying to port Linux to another
* architecture, here are some C-language equivalents. You should
* recode these in the native assembly language, if at all possible.
*
* C language equivalents written by Theodore Ts'o, 9/26/92
*/
#include <asm-generic/bitops/__ffs.h>
#include <asm-generic/bitops/find.h>
#ifndef _TOOLS_LINUX_BITOPS_H_
#error only <linux/bitops.h> can be included directly
#endif
#include <asm-generic/bitops/atomic.h>
#endif /* __TOOLS_ASM_GENERIC_BITOPS_H */

3
tools/perf/MANIFEST
View File

@ -7,8 +7,9 @@ tools/lib/symbol/kallsyms.h
tools/lib/util/find_next_bit.c
tools/include/asm/bug.h
tools/include/asm-generic/bitops/atomic.h
tools/include/asm-generic/bitops/find.h
tools/include/asm-generic/bitops/__ffs.h
tools/include/asm-generic/bitops/find.h
tools/include/asm-generic/bitops.h
tools/include/linux/compiler.h
tools/include/linux/export.h
tools/include/linux/hash.h

1
tools/perf/Makefile.perf
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@ -235,6 +235,7 @@ LIB_H += util/include/linux/bitops.h
LIB_H += ../include/asm-generic/bitops/atomic.h
LIB_H += ../include/asm-generic/bitops/find.h
LIB_H += ../include/asm-generic/bitops/__ffs.h
LIB_H += ../include/asm-generic/bitops.h
LIB_H += ../include/linux/compiler.h
LIB_H += ../include/linux/log2.h
LIB_H += util/include/linux/const.h

17
tools/perf/util/include/linux/bitops.h
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@ -1,5 +1,5 @@
#ifndef _PERF_LINUX_BITOPS_H_
#define _PERF_LINUX_BITOPS_H_
#ifndef _TOOLS_LINUX_BITOPS_H_
#define _TOOLS_LINUX_BITOPS_H_
#include <linux/kernel.h>
#include <linux/compiler.h>
@ -19,6 +19,14 @@
#define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u32))
#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE)
/*
* Include this here because some architectures need generic_ffs/fls in
* scope
*
* XXX: this needs to be asm/bitops.h, when we get to per arch optimizations
*/
#include <asm-generic/bitops.h>
#define for_each_set_bit(bit, addr, size) \
for ((bit) = find_first_bit((addr), (size)); \
(bit) < (size); \
@ -30,14 +38,9 @@
(bit) < (size); \
(bit) = find_next_bit((addr), (size), (bit) + 1))
#include <asm-generic/bitops/atomic.h>
static inline unsigned long hweight_long(unsigned long w)
{
return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
}
#include <asm-generic/bitops/__ffs.h>
#include <asm-generic/bitops/find.h>
#endif