linux-kernel - Re: [patch slab/next] mm, slob: fix build breakage in __kmalloc_node_track

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Date:	Tue, 25 Sep 2012 16:55:55 -0300
From:	Ezequiel Garcia <elezegarcia@...il.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Pekka Enberg <penberg@...nel.org>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [patch slab/next] mm, slob: fix build breakage in __kmalloc_node_track_caller

On Tue, Sep 25, 2012 at 4:53 PM, David Rientjes <rientjes@...gle.com> wrote:
> On Sat, 8 Sep 2012, Ezequiel Garcia wrote:
>
>> @@ -454,15 +455,35 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node)
>>                       gfp |= __GFP_COMP;
>>               ret = slob_new_pages(gfp, order, node);
>>
>> -             trace_kmalloc_node(_RET_IP_, ret,
>> +             trace_kmalloc_node(caller, ret,
>>                                  size, PAGE_SIZE << order, gfp, node);
>>       }
>>
>>       kmemleak_alloc(ret, size, 1, gfp);
>>       return ret;
>>  }
>> +
>> +void *__kmalloc_node(size_t size, gfp_t gfp, int node)
>> +{
>> +     return __do_kmalloc_node(size, gfp, node, _RET_IP_);
>> +}
>>  EXPORT_SYMBOL(__kmalloc_node);
>>
>> +#ifdef CONFIG_TRACING
>> +void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller)
>> +{
>> +     return __do_kmalloc_node(size, gfp, NUMA_NO_NODE, caller);
>> +}
>> +
>> +#ifdef CONFIG_NUMA
>> +void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
>> +                                     int node, unsigned long caller)
>> +{
>> +     return __do_kmalloc_node(size, gfp, node, caller);
>> +}
>> +#endif
>
> This breaks Pekka's slab/next tree with this:
>
> mm/slob.c: In function '__kmalloc_node_track_caller':
> mm/slob.c:488: error: 'gfp' undeclared (first use in this function)
> mm/slob.c:488: error: (Each undeclared identifier is reported only once
> mm/slob.c:488: error: for each function it appears in.)
>
>
> mm, slob: fix build breakage in __kmalloc_node_track_caller
>
> "mm, slob: Add support for kmalloc_track_caller()" breaks the build
> because gfp is undeclared.  Fix it.
>
> Signed-off-by: David Rientjes <rientjes@...gle.com>
> ---
>  mm/slob.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/mm/slob.c b/mm/slob.c
> --- a/mm/slob.c
> +++ b/mm/slob.c
> @@ -482,7 +482,7 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller)
>  }
>
>  #ifdef CONFIG_NUMA
> -void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
> +void *__kmalloc_node_track_caller(size_t size, gfp_t gfp,
>                                         int node, unsigned long caller)
>  {
>         return __do_kmalloc_node(size, gfp, node, caller);

Acked-by: Ezequiel Garcia <elezegarcia@...il.com>

Thanks,
Ezequiel.
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