linux-kernel - Re: [PATCH] perf tools: fix build breakage on arm and arm64 targets

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Date:	Mon, 29 Sep 2014 08:59:59 +0200
From:	Jean Pihet <jean.pihet@...aro.org>
To:	Sudeep Holla <sudeep.holla@....com>
Cc:	Will Deacon <will.deacon@....com>,
	"acme@...hat.com" <acme@...hat.com>, Jiri Olsa <jolsa@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] perf tools: fix build breakage on arm and arm64 targets

Hi Will,

On 26 September 2014 19:19, Sudeep Holla <sudeep.holla@....com> wrote:
>
> On 26/09/14 18:01, Will Deacon wrote:
>>
>> Attempting to build the perf tool on arm or arm64 targets results in the
>> following failure:
>>
>> arch/arm/util/unwind-libunwind.c: In function ‘libunwind__arch_reg_id’:
>> arch/arm/util/unwind-libunwind.c:43:3: error: implicit declaration of
>> function ‘pr_err’ [-Werror=implicit-function-declaration]
>>     pr_err("unwind: invalid reg id %d\n", regnum);
>>     ^
>> This is due to commit 84f5d36f4866 ("perf tools: Move pr_* debug macros
>> into debug object") moving the pr_* macros into a new header file, but
>> failing to update architectures other than x86.
>>
>> This patch adds the missing includes, and fixes the build again.

The fix for ARM is already in the tip tree at
http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=29a3ce31c38c8f73f4e076b7ffc0876b4f5dd6c3.

Regards,
Jean

>>
>
> For ARM64, we also need the patch[1] "perf tools: Fix arm64 build error"
> which is already queued in linux-next.
>
> Regards,
> Sudeep
>
> [1] https://lkml.org/lkml/2014/6/24/1024
>
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