[PATCH v2 1/2] tools include: Adopt byte ordering macros from byteorder/generic.h

[PATCH v2 1/2] tools include: Adopt byte ordering macros from byteorder/generic.h

[He Kuang]

From: Wang Nan <wangnan0@huawei.com>

This patch adopts the macros for byte order conversion from
"include/linux/byteorder/generic.h" to
"tools/include/linux/byteorder/generic.h"

tools/perf/MANIFEST is also updated for 'make perf-*-src-pkg'.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: He Kuang <hekuang@huawei.com>
---
 tools/include/linux/byteorder/generic.h | 48 +++++++++++++++++++++++++++++++++
 tools/perf/MANIFEST                     |  1 +
 2 files changed, 49 insertions(+)
 create mode 100644 tools/include/linux/byteorder/generic.h

diff --git a/tools/include/linux/byteorder/generic.h b/tools/include/linux/byteorder/generic.h
new file mode 100644
index 0000000..41b4507
--- /dev/null
+++ b/tools/include/linux/byteorder/generic.h
@@ -0,0 +1,48 @@
+#ifndef _TOOLS_LINUX_BYTEORDER_GENERIC_H
+#define _TOOLS_LINUX_BYTEORDER_GENERIC_H
+
+#include <endian.h>
+#include <byteswap.h>
+
+#define cpu_to_le64 __cpu_to_le64
+#define le64_to_cpu __le64_to_cpu
+#define cpu_to_le32 __cpu_to_le32
+#define le32_to_cpu __le32_to_cpu
+#define cpu_to_le16 __cpu_to_le16
+#define le16_to_cpu __le16_to_cpu
+#define cpu_to_be64 __cpu_to_be64
+#define be64_to_cpu __be64_to_cpu
+#define cpu_to_be32 __cpu_to_be32
+#define be32_to_cpu __be32_to_cpu
+#define cpu_to_be16 __cpu_to_be16
+#define be16_to_cpu __be16_to_cpu
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define __cpu_to_le16 bswap_16
+#define __cpu_to_le32 bswap_32
+#define __cpu_to_le64 bswap_64
+#define __le16_to_cpu bswap_16
+#define __le32_to_cpu bswap_32
+#define __le64_to_cpu bswap_64
+#define __cpu_to_be16
+#define __cpu_to_be32
+#define __cpu_to_be64
+#define __be16_to_cpu
+#define __be32_to_cpu
+#define __be64_to_cpu
+#else
+#define __cpu_to_le16
+#define __cpu_to_le32
+#define __cpu_to_le64
+#define __le16_to_cpu
+#define __le32_to_cpu
+#define __le64_to_cpu
+#define __cpu_to_be16 bswap_16
+#define __cpu_to_be32 bswap_32
+#define __cpu_to_be64 bswap_64
+#define __be16_to_cpu bswap_16
+#define __be32_to_cpu bswap_32
+#define __be64_to_cpu bswap_64
+#endif
+
+#endif /* _TOOLS_LINUX_BYTEORDER_GENERIC_H */
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 8c8c6b9..80ac3d4 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -46,6 +46,7 @@ tools/include/asm-generic/bitops/hweight.h
 tools/include/asm-generic/bitops.h
 tools/include/linux/atomic.h
 tools/include/linux/bitops.h
+tools/include/linux/byteorder/generic.h
 tools/include/linux/compiler.h
 tools/include/linux/filter.h
 tools/include/linux/hash.h
-- 
1.8.5.2

[PATCH v2 2/2] tools include: Fix wrong macro definitions for cpu_to_le* for big endian

[He Kuang]

From: Wang Nan <wangnan0@huawei.com>

The cpu_to_le* macros in kernel.h are defined without considering
endianese. This patch includes "byteoder/generic.h" instead to fix the
bug, and removes redundant definitions of those macros in intel-bts.c
and intel-pt-pkt-decoder.c.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: He Kuang <hekuang@huawei.com>
---
 tools/include/linux/kernel.h                            | 7 +------
 tools/perf/util/intel-bts.c                             | 5 -----
 tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c | 7 +------
 3 files changed, 2 insertions(+), 17 deletions(-)

diff --git a/tools/include/linux/kernel.h b/tools/include/linux/kernel.h
index 76df535..ccf8daf 100644
--- a/tools/include/linux/kernel.h
+++ b/tools/include/linux/kernel.h
@@ -63,12 +63,7 @@
 #endif
 #endif
 
-/*
- * Both need more care to handle endianness
- * (Don't use bitmap_copy_le() for now)
- */
-#define cpu_to_le64(x)	(x)
-#define cpu_to_le32(x)	(x)
+#include <linux/byteorder/generic.h>
 
 static inline int
 vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c
index 9df9960..0e632c4 100644
--- a/tools/perf/util/intel-bts.c
+++ b/tools/perf/util/intel-bts.c
@@ -40,11 +40,6 @@
 #define INTEL_BTS_ERR_NOINSN  5
 #define INTEL_BTS_ERR_LOST    9
 
-#if __BYTE_ORDER == __BIG_ENDIAN
-#define le64_to_cpu bswap_64
-#else
-#define le64_to_cpu
-#endif
 
 struct intel_bts {
 	struct auxtrace			auxtrace;
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
index b1257c8..9a428f7 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c
@@ -17,6 +17,7 @@
 #include <string.h>
 #include <endian.h>
 #include <byteswap.h>
+#include <linux/byteorder/generic.h>
 
 #include "intel-pt-pkt-decoder.h"
 
@@ -27,17 +28,11 @@
 #define NR_FLAG		BIT63
 
 #if __BYTE_ORDER == __BIG_ENDIAN
-#define le16_to_cpu bswap_16
-#define le32_to_cpu bswap_32
-#define le64_to_cpu bswap_64
 #define memcpy_le64(d, s, n) do { \
 	memcpy((d), (s), (n));    \
 	*(d) = le64_to_cpu(*(d)); \
 } while (0)
 #else
-#define le16_to_cpu
-#define le32_to_cpu
-#define le64_to_cpu
 #define memcpy_le64 memcpy
 #endif
 
-- 
1.8.5.2

Re: [PATCH v2 1/2] tools include: Adopt byte ordering macros from byteorder/generic.h

[Jiri Olsa]

On Thu, Jun 16, 2016 at 10:41:31AM +0000, He Kuang wrote:
> From: Wang Nan <wangnan0@huawei.com>
> 
> This patch adopts the macros for byte order conversion from
> "include/linux/byteorder/generic.h" to
> "tools/include/linux/byteorder/generic.h"
> 
> tools/perf/MANIFEST is also updated for 'make perf-*-src-pkg'.

other than explanation for the kbuild test robot email:
  http://marc.info/?l=linux-kernel&m=146605819924421&w=2

it looks ok..

jirka

Re: [PATCH v2 1/2] tools include: Adopt byte ordering macros from byteorder/generic.h

[Hekuang]

在 2016/6/16 19:36, Jiri Olsa 写道:
> On Thu, Jun 16, 2016 at 10:41:31AM +0000, He Kuang wrote:
>> From: Wang Nan <wangnan0@huawei.com>
>>
>> This patch adopts the macros for byte order conversion from
>> "include/linux/byteorder/generic.h" to
>> "tools/include/linux/byteorder/generic.h"
>>
>> tools/perf/MANIFEST is also updated for 'make perf-*-src-pkg'.
> other than explanation for the kbuild test robot email:
>    http://marc.info/?l=linux-kernel&m=146605819924421&w=2
I think that's because of yesterday I sent these two patches
separately while the second one deponds on the first.

Thank you.
>
> it looks ok..
>
> jirka
>