linux-kernel - Re: [PATCH] perf_counter: tools: Define and use our own u64, s64 etc. definitions

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Date:	Fri, 19 Jun 2009 18:23:30 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	benh@...nel.crashing.org, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf_counter: tools: Define and use our own u64, s64
	etc. definitions


* Paul Mackerras <paulus@...ba.org> wrote:

> On 64-bit powerpc, __u64 is defined to be unsigned long rather 
> than unsigned long long.  This causes compiler warnings every time 
> we print a __u64 value with %Lx.
> 
> Rather than changing __u64, we define our own u64 to be unsigned 
> long long on all architectures, and similarly s64 as signed long 
> long. For consistency we also define u32, s32, u16, s16, u8 and 
> s8.  These definitions are put in a new header, types.h, because 
> these definitions are needed in util/string.h and util/symbol.h.
> 
> The main change here is the mechanical change of 
> __[us]{64,32,16,8} to remove the "__".  The other changes are:
> 
> * Create types.h
> * Include types.h in perf.h, util/string.h and util/symbol.h
> * Add types.h to the LIB_H definition in Makefile
> * Added (u64) casts in process_overflow_event() and print_sym_table()
>   to kill two remaining warnings.
> 
> Signed-off-by: Paul Mackerras <paulus@...ba.org>
> ---
>  tools/perf/Makefile            |    1 +
>  tools/perf/builtin-annotate.c  |   66 ++++++++++++++++----------------
>  tools/perf/builtin-record.c    |   20 +++++-----
>  tools/perf/builtin-report.c    |   80 ++++++++++++++++++++--------------------
>  tools/perf/builtin-stat.c      |   62 +++++++++++++++---------------
>  tools/perf/builtin-top.c       |   24 ++++++------
>  tools/perf/perf.h              |    1 +
>  tools/perf/types.h             |   17 ++++++++
>  tools/perf/util/parse-events.c |   10 ++--
>  tools/perf/util/string.c       |    2 +-
>  tools/perf/util/string.h       |    4 +-
>  tools/perf/util/symbol.c       |   20 +++++-----
>  tools/perf/util/symbol.h       |   15 ++++---
>  13 files changed, 171 insertions(+), 151 deletions(-)
>  create mode 100644 tools/perf/types.h

Very nice, thanks a lot Paul for going through this!

	Ingo
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