[PATCH 01/10] slab/slub: struct memcg_params

[Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>]

For the kmem slab controller, we need to record some extra
information in the kmem_cache structure.

Signed-off-by: Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Signed-off-by: Suleiman Souhlal <suleiman-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
CC: Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>
CC: Pekka Enberg <penberg-bbCR+/B0CizivPeTLB3BmA@public.gmane.org>
CC: Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>
CC: Kamezawa Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
CC: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
---
 include/linux/slab.h     |    7 +++++++
 include/linux/slab_def.h |    4 ++++
 include/linux/slub_def.h |    3 +++
 3 files changed, 14 insertions(+)

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 0dd2dfa..3152bcd 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -177,6 +177,13 @@ unsigned int kmem_cache_size(struct kmem_cache *);
 #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
 #endif
 
+#ifdef CONFIG_MEMCG_KMEM
+struct mem_cgroup_cache_params {
+	struct mem_cgroup *memcg;
+	int id;
+};
+#endif
+
 /*
  * Common kmalloc functions provided by all allocators
  */
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 0c634fa..39c5e9d 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_MEMCG_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..8bb8ad2 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_MEMCG_KMEM
+	struct mem_cgroup_cache_params memcg_params;
+#endif
 
 #ifdef CONFIG_NUMA
 	/*
-- 
1.7.10.4