Commit-ID: 2dc0b9721956f4314364f68a99d8bef490870438
Gitweb: http://git.kernel.org/tip/2dc0b9721956f4314364f68a99d8bef490870438
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 15 Dec 2014 15:07:24 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 17 Dec 2014 11:09:34 -0300
tools: Move __ffs implementation to tools/include/asm-generic/bitops/__ffs.h
To match the Linux kernel source code structure from where this code came from.
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-gubysnp4a8hd98lxoeruak13@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
.../include}/asm-generic/bitops/__ffs.h | 8 ++---
tools/perf/MANIFEST | 1 +
tools/perf/Makefile.perf | 1 +
tools/perf/util/include/linux/bitops.h | 37 +---------------------
4 files changed, 7 insertions(+), 40 deletions(-)
diff --git a/include/asm-generic/bitops/__ffs.h b/tools/include/asm-generic/bitops/__ffs.h
similarity index 77%
copy from include/asm-generic/bitops/__ffs.h
copy to tools/include/asm-generic/bitops/__ffs.h
index 937d7c4..c941750 100644
--- a/include/asm-generic/bitops/__ffs.h
+++ b/tools/include/asm-generic/bitops/__ffs.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_GENERIC_BITOPS___FFS_H_
-#define _ASM_GENERIC_BITOPS___FFS_H_
+#ifndef _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_
+#define _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_
#include <asm/types.h>
@@ -13,7 +13,7 @@ static __always_inline unsigned long __ffs(unsigned long word)
{
int num = 0;
-#if BITS_PER_LONG == 64
+#if __BITS_PER_LONG == 64
if ((word & 0xffffffff) == 0) {
num += 32;
word >>= 32;
@@ -40,4 +40,4 @@ static __always_inline unsigned long __ffs(unsigned long word)
return num;
}
-#endif /* _ASM_GENERIC_BITOPS___FFS_H_ */
+#endif /* _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_ */
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 344c4d3..39c0863 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -5,6 +5,7 @@ tools/lib/api
tools/lib/symbol/kallsyms.c
tools/lib/symbol/kallsyms.h
tools/include/asm/bug.h
+tools/include/asm-generic/bitops/__ffs.h
tools/include/linux/compiler.h
tools/include/linux/hash.h
tools/include/linux/export.h
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 763e68f..dbf8ca6 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -232,6 +232,7 @@ LIB_H += ../include/linux/hash.h
LIB_H += ../../include/linux/stringify.h
LIB_H += util/include/linux/bitmap.h
LIB_H += util/include/linux/bitops.h
+LIB_H += ../include/asm-generic/bitops/__ffs.h
LIB_H += ../include/linux/compiler.h
LIB_H += util/include/linux/const.h
LIB_H += util/include/linux/ctype.h
diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h
index c329416..762bb83 100644
--- a/tools/perf/util/include/linux/bitops.h
+++ b/tools/perf/util/include/linux/bitops.h
@@ -52,42 +52,7 @@ static inline unsigned long hweight_long(unsigned long w)
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
-/**
- * __ffs - find first bit in word.
- * @word: The word to search
- *
- * Undefined if no bit exists, so code should check against 0 first.
- */
-static __always_inline unsigned long __ffs(unsigned long word)
-{
- int num = 0;
-
-#if BITS_PER_LONG == 64
- if ((word & 0xffffffff) == 0) {
- num += 32;
- word >>= 32;
- }
-#endif
- if ((word & 0xffff) == 0) {
- num += 16;
- word >>= 16;
- }
- if ((word & 0xff) == 0) {
- num += 8;
- word >>= 8;
- }
- if ((word & 0xf) == 0) {
- num += 4;
- word >>= 4;
- }
- if ((word & 0x3) == 0) {
- num += 2;
- word >>= 2;
- }
- if ((word & 0x1) == 0)
- num += 1;
- return num;
-}
+#include <asm-generic/bitops/__ffs.h>
typedef const unsigned long __attribute__((__may_alias__)) long_alias_t;
--
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