Commit-ID: 88bcea43fdad515074f03aee75616f6562cb8b95
Gitweb: http://git.kernel.org/tip/88bcea43fdad515074f03aee75616f6562cb8b95
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 16 Dec 2014 10:53:27 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 17 Dec 2014 11:16:25 -0300
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@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-2wuk8vahl7voz0ie55f07c9k@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/include/asm-generic/bitops.h | 24 ++++++++++++++++++++++++
tools/perf/MANIFEST | 3 ++-
tools/perf/Makefile.perf | 1 +
tools/perf/util/include/linux/bitops.h | 17 ++++++++++-------
4 files changed, 37 insertions(+), 8 deletions(-)
diff --git a/tools/include/asm-generic/bitops.h b/tools/include/asm-generic/bitops.h
new file mode 100644
index 0000000..6dfd9d5
--- /dev/null
+++ b/tools/include/asm-generic/bitops.h
@@ -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 */
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index bfd7e22..86f115c 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -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
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 1aef417..3a73a95 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -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
diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h
index 292aade..5237bc9 100644
--- a/tools/perf/util/include/linux/bitops.h
+++ b/tools/perf/util/include/linux/bitops.h
@@ -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
--
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