diff options
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 3bcdda226a91..9adb2ad21da5 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -694,6 +694,9 @@ void lru_gen_online_memcg(struct mem_cgroup *memcg); void lru_gen_offline_memcg(struct mem_cgroup *memcg); void lru_gen_release_memcg(struct mem_cgroup *memcg); void lru_gen_soft_reclaim(struct mem_cgroup *memcg, int nid); +void max_lru_gen_memcg(struct mem_cgroup *memcg, int nid); +bool recheck_lru_gen_max_memcg(struct mem_cgroup *memcg, int nid); +void lru_gen_reparent_memcg(struct mem_cgroup *memcg, struct mem_cgroup *parent, int nid); #else /* !CONFIG_LRU_GEN */ @@ -735,6 +738,20 @@ static inline void lru_gen_soft_reclaim(struct mem_cgroup *memcg, int nid) { } +static inline void max_lru_gen_memcg(struct mem_cgroup *memcg, int nid) +{ +} + +static inline bool recheck_lru_gen_max_memcg(struct mem_cgroup *memcg, int nid) +{ + return true; +} + +static inline +void lru_gen_reparent_memcg(struct mem_cgroup *memcg, struct mem_cgroup *parent, int nid) +{ +} + #endif /* CONFIG_LRU_GEN */ struct lruvec { @@ -2053,21 +2070,16 @@ static inline struct mem_section *__nr_to_section(unsigned long nr) extern size_t mem_section_usage_size(void); /* - * We use the lower bits of the mem_map pointer to store - * a little bit of information. The pointer is calculated - * as mem_map - section_nr_to_pfn(pnum). The result is - * aligned to the minimum alignment of the two values: - * 1. All mem_map arrays are page-aligned. - * 2. section_nr_to_pfn() always clears PFN_SECTION_SHIFT - * lowest bits. PFN_SECTION_SHIFT is arch-specific - * (equal SECTION_SIZE_BITS - PAGE_SHIFT), and the - * worst combination is powerpc with 256k pages, - * which results in PFN_SECTION_SHIFT equal 6. - * To sum it up, at least 6 bits are available on all architectures. - * However, we can exceed 6 bits on some other architectures except - * powerpc (e.g. 15 bits are available on x86_64, 13 bits are available - * with the worst case of 64K pages on arm64) if we make sure the - * exceeded bit is not applicable to powerpc. + * We use the lower bits of the mem_map pointer to store a little bit of + * information. The pointer is calculated as mem_map - section_nr_to_pfn(). + * The result is aligned to the minimum alignment of the two values: + * + * 1. All mem_map arrays are page-aligned. + * 2. section_nr_to_pfn() always clears PFN_SECTION_SHIFT lowest bits. + * + * We always expect a single section to cover full pages. Therefore, + * we can safely assume that PFN_SECTION_SHIFT is large enough to + * accommodate SECTION_MAP_LAST_BIT. We use BUILD_BUG_ON() to ensure this. */ enum { SECTION_MARKED_PRESENT_BIT, |