Re: [PATCH 1/1] Security : smack : Use kmem_cache for allocation and freeing of inode_smack

[Andrew Morton]

On Wed, 15 Oct 2014 11:26:16 +0530 Rohit Kumar <rohit.kr@xxxxxxxxxxx> wrote:

> From: Rohit <rohit.kr@xxxxxxxxxxx>
> 
> Use kmem_cache to allocate/free inode_smack since they are
> alloced in high volumes making it a perfect case for kmem_cache.
> 
> Accounting of memory allocation is below :
>  total           slack            net      count-alloc/free        caller
> Before (with kzalloc)
> 1919872           719952          1919872      29998/0          new_inode_smack+0x14
> After (with kmem_cache)
> 1201680                0          1201680      30042/0          new_inode_smack+0x18
> 
> ...
>
> --- a/security/smack/smack_lsm.c
> +++ b/security/smack/smack_lsm.c
> @@ -53,6 +53,7 @@
>  #define SMK_SENDING	2
>  
>  LIST_HEAD(smk_ipv6_port_list);
> +struct kmem_cache *smack_inode_cache;

static.
  

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