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

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Date:	Wed, 17 Sep 2014 09:41:16 -0600
From:	Shuah Khan <shuahkh@....samsung.com>
To:	David Herrmann <dh.herrmann@...il.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

On 09/17/2014 09:39 AM, David Herrmann wrote:
> 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.
> 

Sorry - wrong system without the headers installed. My bad.

-- Shuah


-- 
Shuah Khan
Sr. Linux Kernel Developer
Samsung Research America (Silicon Valley)
shuahkh@....samsung.com | (970) 217-8978
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