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Date:   Tue, 13 Feb 2018 09:51:09 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Michael Ellerman <mpe@...erman.id.au>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Fengguang Wu <fengguang.wu@...el.com>
Cc:     linux-s390 <linux-s390@...r.kernel.org>,
        John Johansen <john.johansen@...onical.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        X86 ML <x86@...nel.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        virtualization@...ts.linux-foundation.org,
        iommu@...ts.linux-foundation.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        sparclinux@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Dmitry Kasatkin <dmitry.kasatkin@...el.com>
Subject: Re: [PATCH] headers: untangle kmemleak.h from mm.h

On 02/13/2018 02:09 AM, Michael Ellerman wrote:
> Randy Dunlap <rdunlap@...radead.org> writes:
> 
>> On 02/12/2018 04:28 AM, Michael Ellerman wrote:
>>> Randy Dunlap <rdunlap@...radead.org> writes:
>>>
>>>> From: Randy Dunlap <rdunlap@...radead.org>
>>>>
>>>> Currently <linux/slab.h> #includes <linux/kmemleak.h> for no obvious
>>>> reason. It looks like it's only a convenience, so remove kmemleak.h
>>>> from slab.h and add <linux/kmemleak.h> to any users of kmemleak_*
>>>> that don't already #include it.
>>>> Also remove <linux/kmemleak.h> from source files that do not use it.
>>>>
>>>> This is tested on i386 allmodconfig and x86_64 allmodconfig. It
>>>> would be good to run it through the 0day bot for other $ARCHes.
>>>> I have neither the horsepower nor the storage space for the other
>>>> $ARCHes.
>>>>
>>>> [slab.h is the second most used header file after module.h; kernel.h
>>>> is right there with slab.h. There could be some minor error in the
>>>> counting due to some #includes having comments after them and I
>>>> didn't combine all of those.]
>>>>
>>>> This is Lingchi patch #1 (death by a thousand cuts, applied to kernel
>>>> header files).
>>>>
>>>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
>>>
>>> I threw it at a random selection of configs and so far the only failures
>>> I'm seeing are:
>>>
>>>   lib/test_firmware.c:134:2: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]                                                                                                          
>>>   lib/test_firmware.c:620:25: error: implicit declaration of function 'vzalloc' [-Werror=implicit-function-declaration]
>>>   lib/test_firmware.c:620:2: error: implicit declaration of function 'vzalloc' [-Werror=implicit-function-declaration]
>>>   security/integrity/digsig.c:146:2: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]
>>
>> Both of those source files need to #include <linux/vmalloc.h>.
> 
> Yep, I added those and rebuilt. I don't see any more failures that look
> related to your patch.

Great, thanks.

I also sent patches for both of those.

>   http://kisskb.ellerman.id.au/kisskb/head/13399/
> 
> 
> I haven't gone through the defconfigs I have enabled for a while, so
> it's possible I have some missing but it's still a reasonable cross
> section.


-- 
~Randy

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