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Date: Sat, 20 Jan 2018 10:09:34 +0100
From: Greg KH <gregkh@linuxfoundation.org>
To: Tuomas Tynkkynen <tuomas@tuxera.com>
Cc: stable@vger.kernel.org
Subject: Re: 4.9 backport request: perf tools: Fix build with ARCH=x86_64
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On Sat, Jan 20, 2018 at 11:04:20AM +0200, Tuomas Tynkkynen wrote:
> Hi Greg,
> 
> Please apply the following commit from 4.10 to 4.9.y to fix perf build
> under certain conditions:
> 
> commit 7a759cd8e8272ee18922838ee711219c7c796a31                                        
> Author: Jiada Wang <jiada_wang@mentor.com>
> Date:   Sun Apr 9 20:02:37 2017 -0700
> 
>     perf tools: Fix build with ARCH=x86_64
>     
>     With commit: 0a943cb10ce78 (tools build: Add HOSTARCH Makefile variable)
>     when building for ARCH=x86_64, ARCH=x86_64 is passed to perf instead of
>     ARCH=x86, so the perf build process searchs header files from
>     tools/arch/x86_64/include, which doesn't exist.
>     
>     The following build failure is seen:
>     
>       In file included from util/event.c:2:0:
>         tools/include/uapi/linux/mman.h:4:27: fatal error: uapi/asm/mman.h: No such file or directory
>         compilation terminated.
>     
>     Fix this issue by using SRCARCH instead of ARCH in perf, just like the
>     main kernel Makefile and tools/objtool's.
>     
>     Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
>     Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
>     Acked-by: Jiri Olsa <jolsa@kernel.org>
>     Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
>     Cc: Andi Kleen <ak@linux.intel.com>
>     Cc: Eugeniu Rosca <erosca@de.adit-jv.com>
>     Cc: Jan Stancek <jstancek@redhat.com>
>     Cc: Masami Hiramatsu <mhiramat@kernel.org>
>     Cc: Peter Zijlstra <peterz@infradead.org>
>     Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
>     Cc: Rui Teng <rui.teng@linux.vnet.ibm.com>
>     Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
>     Cc: Wang Nan <wangnan0@huawei.com>
>     Fixes: 0a943cb10ce7 ("tools build: Add HOSTARCH Makefile variable")
>     Link: http://lkml.kernel.org/r/1491793357-14977-2-git-send-email-jiada_wang@mentor.com
>     Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Now queued up, thanks.

greg k-h