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Message-ID: <5e1321ca-0d46-4e9d-a6e5-0560d99f65ff@infradead.org>
Date: Mon, 25 Mar 2024 22:44:06 -0700
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Subject: Re: linux-next: build warnings after merge of the mm tree
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To: Suren Baghdasaryan <surenb@google.com>,
 Stephen Rothwell <sfr@canb.auug.org.au>,
 Linux Doc Mailing List <linux-doc@vger.kernel.org>,
 Jonathan Corbet <corbet@lwn.net>
Cc: Andrew Morton <akpm@linux-foundation.org>,
 Kent Overstreet <kent.overstreet@linux.dev>,
 Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
 Linux Next Mailing List <linux-next@vger.kernel.org>
References: <20240325123603.1bdd6588@canb.auug.org.au>
 <CAJuCfpH4Ee00hM9+B7=mi5Dwjrhov8vUK-KwPuoO3wsD7iJSAQ@mail.gmail.com>
From: Randy Dunlap <rdunlap@infradead.org>
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On 3/25/24 19:19, Suren Baghdasaryan wrote:
> On Sun, Mar 24, 2024 at 6:36 PM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>>
>> Hi all,
>>
>> After merging the mm tree, today's linux-next build (htmldocs) produced
>> these warnings:
>>
>> include/linux/slab.h:545: warning: expecting prototype for kmem_cache_alloc(). Prototype was for kmem_cache_alloc_noprof() instead
>> include/linux/slab.h:652: warning: expecting prototype for kmalloc(). Prototype was for kmalloc_noprof() instead
>> include/linux/slab.h:692: warning: expecting prototype for kmalloc_array(). Prototype was for kmalloc_array_noprof() instead
>> include/linux/slab.h:714: warning: expecting prototype for krealloc_array(). Prototype was for krealloc_array_noprof() instead
>> include/linux/slab.h:730: warning: Function parameter or struct member '_n' not described in 'kcalloc'
>> include/linux/slab.h:730: warning: Function parameter or struct member '_size' not described in 'kcalloc'
>> include/linux/slab.h:730: warning: Function parameter or struct member '_flags' not described in 'kcalloc'
>> include/linux/slab.h:730: warning: Excess function parameter 'n' description in 'kcalloc'
>> include/linux/slab.h:730: warning: Excess function parameter 'size' description in 'kcalloc'
>> include/linux/slab.h:730: warning: Excess function parameter 'flags' description in 'kcalloc'
>> include/linux/slab.h:774: warning: expecting prototype for kzalloc(). Prototype was for kzalloc_noprof() instead
>> mm/slab_common.c:1217: warning: expecting prototype for krealloc(). Prototype was for krealloc_noprof() instead
>> mm/util.c:751: warning: expecting prototype for __vcalloc(). Prototype was for __vcalloc_noprof() instead
>> mm/vmalloc.c:3897: warning: expecting prototype for vmalloc(). Prototype was for vmalloc_noprof() instead
>> mm/vmalloc.c:3916: warning: expecting prototype for vmalloc_huge(). Prototype was for vmalloc_huge_noprof() instead
>> mm/vmalloc.c:3953: warning: expecting prototype for vmalloc_user(). Prototype was for vmalloc_user_noprof() instead
>> mm/mempool.c:245: warning: expecting prototype for mempool_init(). Prototype was for mempool_init_noprof() instead
>> mm/mempool.c:271: warning: Function parameter or struct member 'gfp_mask' not described in 'mempool_create_node_noprof'
>> mm/mempool.c:271: warning: Function parameter or struct member 'node_id' not described in 'mempool_create_node_noprof'
>> mm/mempool.c:271: warning: expecting prototype for mempool_create_node(). Prototype was for mempool_create_node_noprof() instead
>>
>> Introduced by commits
>>
>>   c64e38ed88d1 ("mm/slab: enable slab allocation tagging for kmalloc and friends")
>>   ea7b8933f21b ("mempool: hook up to memory allocation profiling")
>>   576477564ede ("mm: vmalloc: enable memory allocation profiling")
>>
>> from the mm-unstable branch of the mm tree.
> 
> Thanks for the report, Stephen!
> Let us check with Randy Dunlap how we should handle these. I assume we
> still want documentation to document kmalloc(), not kmalloc_noprof().
> Maybe there is a way to mute these warnings.

A proposed patch is here:
  https://lore.kernel.org/lkml/20240326054149.2121-1-rdunlap@infradead.org/T/#u


-- 
#Randy