按访问模式重排memcg结构字段 · v1

current_obj_cgroup() reads memcg->nodeinfo[nid]->objcg on every accounted allocation. The field sits at the end of struct mem_cgroup_per_node, on the same cache line as lru_zone_size[] and iter. lru_z

The two members of struct mem_cgroup_private_id have different access patterns. The id is read on every eviction and refault through mem_cgroup_private_id(), and is only written when the memcg is crea

[memcg: group the write-hot fields of struct mem_cgroup] These fields are written on the charge, reclaim and socket paths: socket_pressure written by reclaim, read on every socket charge me

[memcg: group the cold fields of struct mem_cgroup] These fields are only touched by the cgroup control paths: memory_peaks, swap_peaks, peaks_lock memory.peak open/read/release events_file, ev

[memcg: group the read-mostly fields of struct mem_cgroup] These fields are set when the memcg is created and only read after that: vmstats_percpu read on every stat update vmstats zswap_max,

[memcg: group the fields of struct mem_cgroup_per_node] Replace the two ad-hoc CACHELINE_PADDING members with named cache line groups: memcg_pn_read_mostly memcg, lruvec_stats_percpu, lruvec_stat