diff options
| author | Johannes Weiner <hannes@cmpxchg.org> | 2024-07-01 11:31:15 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-10 12:14:54 -0700 |
| commit | 3a3b7fec3974f954600844e41d773c00857ef48a (patch) | |
| tree | 40eb0671403d8c096f35cc0b5d457802dd139e1f /kernel/bpf/memalloc.c | |
| parent | 6df13230b612af81ce04f20bb37a02e58ef71925 (diff) | |
mm: remove CONFIG_MEMCG_KMEM
CONFIG_MEMCG_KMEM used to be a user-visible option for whether slab
tracking is enabled. It has been default-enabled and equivalent to
CONFIG_MEMCG for almost a decade. We've only grown more kernel memory
accounting sites since, and there is no imaginable cgroup usecase going
forward that wants to track user pages but not the multitude of
user-drivable kernel allocations.
Link: https://lkml.kernel.org/r/20240701153148.452230-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/bpf/memalloc.c')
| -rw-r--r-- | kernel/bpf/memalloc.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/kernel/bpf/memalloc.c b/kernel/bpf/memalloc.c index a546aba46d5d..dec892ded031 100644 --- a/kernel/bpf/memalloc.c +++ b/kernel/bpf/memalloc.c @@ -155,12 +155,9 @@ static void *__alloc(struct bpf_mem_cache *c, int node, gfp_t flags) static struct mem_cgroup *get_memcg(const struct bpf_mem_cache *c) { -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG if (c->objcg) return get_mem_cgroup_from_objcg(c->objcg); -#endif - -#ifdef CONFIG_MEMCG return root_mem_cgroup; #else return NULL; @@ -534,7 +531,7 @@ int bpf_mem_alloc_init(struct bpf_mem_alloc *ma, int size, bool percpu) size += LLIST_NODE_SZ; /* room for llist_node */ unit_size = size; -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG if (memcg_bpf_enabled()) objcg = get_obj_cgroup_from_current(); #endif @@ -556,7 +553,7 @@ int bpf_mem_alloc_init(struct bpf_mem_alloc *ma, int size, bool percpu) pcc = __alloc_percpu_gfp(sizeof(*cc), 8, GFP_KERNEL); if (!pcc) return -ENOMEM; -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG objcg = get_obj_cgroup_from_current(); #endif ma->objcg = objcg; |