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Subject: Re: [PATCH v2] selftests/seccomp: Fix seccomp failure by adding
 missing headers
To:     Muhammad Usama Anjum <usama.anjum@collabora.com>,
        Sherry Yang <sherry.yang@oracle.com>
Cc:     "shuah@kernel.org" <shuah@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        "luto@amacapital.net" <luto@amacapital.net>,
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        "christian@brauner.io" <christian@brauner.io>,
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        "john.fastabend@gmail.com" <john.fastabend@gmail.com>,
        "kpsingh@kernel.org" <kpsingh@kernel.org>,
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "bpf@vger.kernel.org" <bpf@vger.kernel.org>,
        Shuah Khan <skhan@linuxfoundation.org>
References: <20220210203049.67249-1-sherry.yang@oracle.com>
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From:   Shuah Khan <skhan@linuxfoundation.org>
Message-ID: <2f59f86c-dbd7-7dbf-021d-bc62ebbe2a43@linuxfoundation.org>
Date:   Tue, 15 Feb 2022 11:43:48 -0700
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On 2/15/22 11:17 AM, Muhammad Usama Anjum wrote:
> 
> On 2/14/22 9:12 PM, Muhammad Usama Anjum wrote:
>>>> "../../../../usr/include/" directory doesn't have header files if
>>>> different output directory is used for kselftests build like "make -C
>>>> tools/tests/selftest O=build". Can you try adding recently added
>>>> variable, KHDR_INCLUDES here which makes this kind of headers inclusion
>>>> easy and correct for other build combinations as well?
>>>>
>>>>
>>>
>>> Hi Muhammad,
>>>
>>> I just pulled linux-next, and tried with KHDR_INCLUDES. It works. Very nice
>>> work! I really appreciate you made headers inclusion compatible. However,
>>> my case is a little more complicated. It will throw warnings with -I, using
>>> -isystem can suppress these warnings, more details please refer to
>>> https://lore.kernel.org/all/C340461A-6FD2-440A-8EFC-D7E85BF48DB5@oracle.com/
>>>
>>> According to this case, do you think will it be better to export header path
>>> (KHDR_INCLUDES) without “-I”?
>> Well said. I've thought about it and it seems like -isystem is better
>> than -I. I've sent a patch:
>> https://lore.kernel.org/linux-kselftest/20220214160756.3543590-1-usama.anjum@collabora.com/
>> I'm looking forward to discussion on it.
> The patch has been accepted. It should appear in linux-next soon. You
> should be able to use KHDR_INCLUDES easily now.
> 

Sherry,

I pulled in your patch as a fix as is for 5.17-rc5.

Using KHDR_INCLUDES can be separate patch for next release.
This way the fix is going to be pulled for this release
without dependencies on other patches.

thanks,
-- Shuah