linux-kernel - [PATCH v3 3/6] perf tools: include _

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Message-Id: <1347315303-29906-4-git-send-email-irina.tirdea@intel.com>
Date:	Tue, 11 Sep 2012 01:15:00 +0300
From:	Irina Tirdea <irina.tirdea@...il.com>
To:	mingo@...hat.com, acme@...stprotocols.net, a.p.zijlstra@...llo.nl,
	rostedt@...dmis.org
Cc:	paulus@...ba.org, dsahern@...il.com, namhyung.kim@....com,
	linux-kernel@...r.kernel.org, Irina Tirdea <irina.tirdea@...el.com>
Subject: [PATCH v3 3/6] perf tools: include __WORDSIZE definition

__WORDSIZE is GLibC-specific and is not defined on all systems or glibc
versions (e.g. Android's bionic does not define it).

In file included from util/include/linux/bitmap.h:5:0,
                 from util/header.h:10,
                 from util/session.h:6,
                 from util/build-id.h:4,
                 from util/annotate.c:11:
util/include/linux/bitops.h: In function 'set_bit':
util/include/linux/bitops.h:25:12: error:
'__WORDSIZE' undeclared (first use in this function)
util/include/linux/bitops.h:25:12: note:
each undeclared identifier is reported only once for each function it appears in
util/include/linux/bitops.h:23:51: error:
parameter 'addr' set but not used [-Werror=unused-but-set-parameter]
util/include/linux/bitops.h: In function 'clear_bit':
util/include/linux/bitops.h:30:12: error:
'__WORDSIZE' undeclared (first use in this function)
util/include/linux/bitops.h:28:53: error:
parameter 'addr' set but not used [-Werror=unused-but-set-parameter]
In file included from util/header.h:10:0,
                 from util/session.h:6,
                 from util/build-id.h:4,
                 from util/annotate.c:11:
util/include/linux/bitmap.h: In function 'bitmap_zero':
util/include/linux/bitmap.h:22:6: error:
'__WORDSIZE' undeclared (first use in this function)

Defining __WORDSIZE in perf's headers if it is not already defined.

Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
Suggested-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Suggested-by: Pekka Enberg <penberg@...nel.org>
---
 tools/perf/util/include/linux/bitops.h |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h
index 587a230..a55d8cf 100644
--- a/tools/perf/util/include/linux/bitops.h
+++ b/tools/perf/util/include/linux/bitops.h
@@ -5,6 +5,10 @@
 #include <linux/compiler.h>
 #include <asm/hweight.h>
 
+#ifndef __WORDSIZE
+#define __WORDSIZE (__SIZEOF_LONG__ * 8)
+#endif
+
 #define BITS_PER_LONG __WORDSIZE
 #define BITS_PER_BYTE           8
 #define BITS_TO_LONGS(nr)       DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
-- 
1.7.9.5

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