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    Subject[PATCH v4 10/25] slab/slub: struct memcg_params
    Date
    For the kmem slab controller, we need to record some extra
    information in the kmem_cache structure.

    Signed-off-by: Glauber Costa <glommer@parallels.com>
    Signed-off-by: Suleiman Souhlal <suleiman@google.com>
    CC: Christoph Lameter <cl@linux.com>
    CC: Pekka Enberg <penberg@cs.helsinki.fi>
    CC: Michal Hocko <mhocko@suse.cz>
    CC: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    CC: Johannes Weiner <hannes@cmpxchg.org>
    ---
    include/linux/slab.h | 8 ++++++++
    include/linux/slab_def.h | 4 ++++
    include/linux/slub_def.h | 3 +++
    3 files changed, 15 insertions(+)

    diff --git a/include/linux/slab.h b/include/linux/slab.h
    index 3c2181a..e007cc5 100644
    --- a/include/linux/slab.h
    +++ b/include/linux/slab.h
    @@ -177,6 +177,14 @@ unsigned int kmem_cache_size(struct kmem_cache *);
    #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
    #endif

    +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
    +struct mem_cgroup_cache_params {
    + struct mem_cgroup *memcg;
    + int id;
    + atomic_t refcnt;
    +};
    +#endif
    +
    /*
    * Common kmalloc functions provided by all allocators
    */
    diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
    index 0c634fa..04ca5be 100644
    --- a/include/linux/slab_def.h
    +++ b/include/linux/slab_def.h
    @@ -83,6 +83,10 @@ struct kmem_cache {
    int obj_offset;
    #endif /* CONFIG_DEBUG_SLAB */

    +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
    + struct mem_cgroup_cache_params memcg_params;
    +#endif
    +
    /* 6) per-cpu/per-node data, touched during every alloc/free */
    /*
    * We put array[] at the end of kmem_cache, because we want to size
    diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
    index df448ad..7637f3b 100644
    --- a/include/linux/slub_def.h
    +++ b/include/linux/slub_def.h
    @@ -101,6 +101,9 @@ struct kmem_cache {
    #ifdef CONFIG_SYSFS
    struct kobject kobj; /* For sysfs */
    #endif
    +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
    + struct mem_cgroup_cache_params memcg_params;
    +#endif

    #ifdef CONFIG_NUMA
    /*
    --
    1.7.10.2


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