linux-kernel - Re: [PATCH] selftests/memfd: Run test on all architectures

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Date:	Wed, 17 Sep 2014 17:39:53 +0200
From:	David Herrmann <dh.herrmann@...il.com>
To:	Shuah Khan <shuahkh@....samsung.com>
Cc:	Pranith Kumar <bobby.prani@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Phong Tran <tranmanphong@...il.com>,
	"open list:KERNEL SELFTEST F..." <linux-api@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] selftests/memfd: Run test on all architectures

Hi

On Wed, Sep 17, 2014 at 5:36 PM, Shuah Khan <shuahkh@....samsung.com> wrote:
> On 09/17/2014 06:28 AM, David Herrmann wrote:
>> Hi
>>
>> On Tue, Sep 16, 2014 at 12:59 AM, Pranith Kumar <bobby.prani@...il.com> wrote:
>>> Remove the dependence on x86 to run the memfd test. Verfied on 32-bit powerpc.
>>>
>>> Signed-off-by: Pranith Kumar <bobby.prani@...il.com>
>>
>> Now that most archs have __NR_memfd_create, this is:
>>
>> Reviewed-by: David Herrmann <dh.herrmann@...il.com>
>>
>
> Hmm. I am seeing failures on x86_64 on top of Linus's tree
> (without this patch)
>
> make -C tools/testing/selftests/memfd/make: Entering directory
> `/lkml/linus_git_3.14/tools/testing/selftests/memfd'
> gcc -D_FILE_OFFSET_BITS=64
> -I../../../../arch/x86/include/generated/uapi/
> -I../../../../arch/x86/include/uapi/ -I../../../../include/uapi/
> -I../../../../include/ memfd_test.c -o memfd_test
> memfd_test.c: In function ‘sys_memfd_create’:
> memfd_test.c:26:17: error: ‘__NR_memfd_create’ undeclared (first use in
> this function)
>   return syscall(__NR_memfd_create, name, flags);
>                  ^
> memfd_test.c:26:17: note: each undeclared identifier is reported only
> once for each function it appears in
>
> Could you please look into this?? It appears __NR_memfd_create isn't
> defined on x86_64???

You need the headers installed in your system. By dropping the
arch-includes from the Makefile, we require 3.17 headers in
/usr/include.

Thanks
David
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