linux-kernel - Re: [PATCH] perf tools: fix build for various architectures

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Date:	Tue, 27 Nov 2012 14:12:23 +0000
From:	Will Deacon <will.deacon@....com>
To:	Mark Rutland <Mark.Rutland@....com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	David Howells <dhowells@...hat.com>,
	Deng-Cheng Zhu <dengcheng.zhu@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Kyle McMartin <kyle@...artin.ca>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH] perf tools: fix build for various architectures

On Tue, Nov 27, 2012 at 12:16:31PM +0000, Mark Rutland wrote:
> The UAPI changes broke the perf tool, and as of 3.7-rc7, it
> still won't build for arm:
> 
> 	In file included from util/../perf.h:81:0,
> 			 from util/cache.h:7,
> 			 from perf.c:12:
> 	util/../../../arch/arm/include/asm/unistd.h:16:29: fatal error: uapi/asm/unistd.h: No such file or directory
> 	compilation terminated.
> 	make: *** [perf.o] Error 1
> 
> It seems the perf tool build infrastructure can't map <uapi/*> paths,
> and several architectures (arm, arm64, ia64, mips, parisc, powerpc,
> s390) include <uapi/asm/unistd.h> from their <asm/unistd.h>.
> 
> This patch copies 77626081: "perf tools: Fix build on sparc." in simply
> changing the path to use arch/arm/include/uapi/asm/unistd.h directly for
> all of these cases.
> 
> I've tested this on arm, but I don't have the necessary toolchains to
> check the other cases.

For the arm/arm64 parts:

  Acked-by: Will Deacon <will.deacon@....com>

Cheers,

Will
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