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 /mm/kfence | |
| 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 'mm/kfence')
| -rw-r--r-- | mm/kfence/core.c | 6 | ||||
| -rw-r--r-- | mm/kfence/kfence.h | 2 |
2 files changed, 4 insertions, 4 deletions
diff --git a/mm/kfence/core.c b/mm/kfence/core.c index 83f8e78827c0..c5cb54fc696d 100644 --- a/mm/kfence/core.c +++ b/mm/kfence/core.c @@ -602,7 +602,7 @@ static unsigned long kfence_init_pool(void) continue; __folio_set_slab(slab_folio(slab)); -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG slab->obj_exts = (unsigned long)&kfence_metadata_init[i / 2 - 1].obj_exts | MEMCG_DATA_OBJEXTS; #endif @@ -652,7 +652,7 @@ reset_slab: if (!i || (i % 2)) continue; -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG slab->obj_exts = 0; #endif __folio_clear_slab(slab_folio(slab)); @@ -1146,7 +1146,7 @@ void __kfence_free(void *addr) { struct kfence_metadata *meta = addr_to_metadata((unsigned long)addr); -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG KFENCE_WARN_ON(meta->obj_exts.objcg); #endif /* diff --git a/mm/kfence/kfence.h b/mm/kfence/kfence.h index 084f5f36e8e7..db87a05047bd 100644 --- a/mm/kfence/kfence.h +++ b/mm/kfence/kfence.h @@ -97,7 +97,7 @@ struct kfence_metadata { struct kfence_track free_track; /* For updating alloc_covered on frees. */ u32 alloc_stack_hash; -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG struct slabobj_ext obj_exts; #endif }; |