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authorLinus Torvalds <torvalds@linux-foundation.org>2021-07-02 03:17:24 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-02 03:17:24 +0300
commite267992f9ef0bf717d70a9ee18049782f77e4b3a (patch)
tree6caf3664452672f41e8039f6af4279e2df709d66 /include
parent19b438592238b3b40c3f945bb5f9c4ca971c0c45 (diff)
parente4d777003a43feab2e000749163e531f6c48c385 (diff)
downloadlinux-e267992f9ef0bf717d70a9ee18049782f77e4b3a.tar.xz
Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu updates from Dennis Zhou: - percpu chunk depopulation - depopulate backing pages for chunks with empty pages when we exceed a global threshold without those pages. This lets us reclaim a portion of memory that would previously be lost until the full chunk would be freed (possibly never). - memcg accounting cleanup - previously separate chunks were managed for normal allocations and __GFP_ACCOUNT allocations. These are now consolidated which cleans up the code quite a bit. - a few misc clean ups for clang warnings * 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: percpu: optimize locking in pcpu_balance_workfn() percpu: initialize best_upa variable percpu: rework memcg accounting mm, memcg: introduce mem_cgroup_kmem_disabled() mm, memcg: mark cgroup_memory_nosocket, nokmem and noswap as __ro_after_init percpu: make symbol 'pcpu_free_slot' static percpu: implement partial chunk depopulation percpu: use pcpu_free_slot instead of pcpu_nr_slots - 1 percpu: factor out pcpu_check_block_hint() percpu: split __pcpu_balance_workfn() percpu: fix a comment about the chunks ordering
Diffstat (limited to 'include')
-rw-r--r--include/linux/memcontrol.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 6d66037be646..bfe5c486f4ad 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1619,6 +1619,7 @@ static inline void set_shrinker_bit(struct mem_cgroup *memcg,
#endif
#ifdef CONFIG_MEMCG_KMEM
+bool mem_cgroup_kmem_disabled(void);
int __memcg_kmem_charge_page(struct page *page, gfp_t gfp, int order);
void __memcg_kmem_uncharge_page(struct page *page, int order);
@@ -1672,6 +1673,10 @@ static inline int memcg_cache_id(struct mem_cgroup *memcg)
struct mem_cgroup *mem_cgroup_from_obj(void *p);
#else
+static inline bool mem_cgroup_kmem_disabled(void)
+{
+ return true;
+}
static inline int memcg_kmem_charge_page(struct page *page, gfp_t gfp,
int order)