From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Irina Tirdea <irina.tirdea@gmail.com>
Cc: Pekka Enberg <penberg@kernel.org>,
mingo@redhat.com, acme@ghostprotocols.net, rostedt@goodmis.org,
paulus@samba.org, dsahern@gmail.com, namhyung.kim@lge.com,
linux-kernel@vger.kernel.org,
Irina Tirdea <irina.tirdea@intel.com>
Subject: Re: [PATCH v2 03/12] perf tools: include __WORDSIZE definition
Date: Mon, 10 Sep 2012 16:44:56 +0200 [thread overview]
Message-ID: <1347288296.2124.12.camel@twins> (raw)
In-Reply-To: <CANg8OW+iuqnc-_daWDSXymYNKnr0YEoa_3310YvYJAUF_vCTnQ@mail.gmail.com>
On Sun, 2012-09-09 at 01:19 +0300, Irina Tirdea wrote:
> >> +#ifndef __WORDSIZE
> >> +#if defined(__x86_64__)
> >> +# define __WORDSIZE 64
> >> +#endif
> >> +#if defined(__i386__) || defined(__arm__)
> >> +# define __WORDSIZE 32
> >> +#endif
> >> +#endif
> >
> > Why not use "sizeof(unsigned long) * 8" ?
>
> I tried to do it this, but the compilation crashes because this value
> is tested in an #if:
>
> target C: libperf <= tools/perf/util/annotate.c
> In file included from tools/perf/util/include/linux/bitmap.h:5:0,
> from tools/perf/util/header.h:10,
> from tools/perf/util/session.h:6,
> from tools/perf/util/build-id.h:4,
> from tools/perf/util/annotate.c:11:
> tools/perf/util/include/linux/bitops.h: In function '__ffs':
> tools/perf/util/include/linux/bitops.h:62:5: warning: "sizeof" is not
> defined [-Wundef]
> tools/perf/util/include/linux/bitops.h:62:5: error: missing binary
> operator before token "("
Use either: __SIZEOF_LONG__ (8) or __LP64__ (1)
next prev parent reply other threads:[~2012-09-10 14:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-08 0:43 [PATCH v2 00/12] Porting perf to Android Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 01/12] perf tools: include wrapper for magic.h Irina Tirdea
2012-09-08 9:13 ` Pekka Enberg
2012-09-08 22:39 ` Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 02/12] perf tools: update types definitions for Android Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 03/12] perf tools: include __WORDSIZE definition Irina Tirdea
2012-09-08 9:07 ` Pekka Enberg
2012-09-08 22:19 ` Irina Tirdea
2012-09-10 14:44 ` Peter Zijlstra [this message]
2012-09-10 21:42 ` Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 04/12] perf tools: fix ALIGN redefinition in system headers Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 05/12] perf tools: include basename for non-glibc systems Irina Tirdea
2012-09-08 9:09 ` Pekka Enberg
2012-09-08 14:33 ` David Ahern
2012-09-08 11:43 ` [tip:perf/core] " tip-bot for Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 06/12] perf tools: fix missing winsize definition Irina Tirdea
2012-09-08 11:44 ` [tip:perf/core] " tip-bot for Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 07/12] perf tools: include missing pthread.h header Irina Tirdea
2012-09-08 11:45 ` [tip:perf/core] " tip-bot for Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 08/12] perf tools: fix no return in non-void function Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 09/12] perf tools: replace mkostemp with mkstemp Irina Tirdea
2012-09-08 11:46 ` [tip:perf/core] " tip-bot for Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 10/12] tools lib traceevent: replace mempcpy with memcpy Irina Tirdea
2012-09-08 11:47 ` [tip:perf/core] " tip-bot for Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 11/12] perf tools: add NO_BACKTRACE for application self-debugging Irina Tirdea
2012-09-08 11:48 ` [tip:perf/core] " tip-bot for Irina Tirdea
2012-09-08 0:43 ` [PATCH v2 12/12] perf tools: Use __maybe_used for unused variables Irina Tirdea
2012-09-08 1:14 ` [PATCH v2 00/12] Porting perf to Android Arnaldo Carvalho de Melo
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