BACKPORT: mm: use self-explanatory macros rather than "2"
Backport upstream change for Multi generation LRU feature Moto-CRs-Fixed:(CR) Signed-off-by: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alex Shi <alex.shi@linux.alibaba.com> Link: http://lkml.kernel.org/r/20200831175042.3527153-2-yuzhao@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit ed0173733dd468883198c3136284394320b8fad6) Bug: 228114874 Change-Id: Ifbc0e8976a29d914ade5a84a8a1fff069cb2d3bb Reviewed-on: https://gerrit.mot.com/2268686 SME-Granted: SME Approvals Granted SLTApproved: Slta Waiver Tested-by: Jira Key Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com> Submit-Approved: Jira Key
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@@ -232,6 +232,7 @@ static inline int is_active_lru(enum lru_list lru)
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{
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return (lru == LRU_ACTIVE_ANON || lru == LRU_ACTIVE_FILE);
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}
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#define ANON_AND_FILE 2
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struct zone_reclaim_stat {
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/*
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@@ -239,11 +240,9 @@ struct zone_reclaim_stat {
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* mem/swap backed and file backed pages are referenced.
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* The higher the rotated/scanned ratio, the more valuable
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* that cache is.
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*
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* The anon LRU stats live in [0], file LRU stats in [1]
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*/
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unsigned long recent_rotated[2];
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unsigned long recent_scanned[2];
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unsigned long recent_rotated[ANON_AND_FILE];
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unsigned long recent_scanned[ANON_AND_FILE];
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};
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struct lruvec {
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@@ -370,6 +369,8 @@ enum zone_type {
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#ifndef __GENERATING_BOUNDS_H
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#define ASYNC_AND_SYNC 2
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struct zone {
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/* Read-mostly fields */
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@@ -499,8 +500,8 @@ struct zone {
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#if defined CONFIG_COMPACTION || defined CONFIG_CMA
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/* pfn where compaction free scanner should start */
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unsigned long compact_cached_free_pfn;
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/* pfn where async and sync compaction migration scanner should start */
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unsigned long compact_cached_migrate_pfn[2];
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/* pfn where compaction migration scanner should start */
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unsigned long compact_cached_migrate_pfn[ASYNC_AND_SYNC];
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unsigned long compact_init_migrate_pfn;
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unsigned long compact_init_free_pfn;
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#endif
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+2
-2
@@ -3516,8 +3516,8 @@ static int memcg_stat_show(struct seq_file *m, void *v)
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pg_data_t *pgdat;
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struct mem_cgroup_per_node *mz;
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struct zone_reclaim_stat *rstat;
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unsigned long recent_rotated[2] = {0, 0};
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unsigned long recent_scanned[2] = {0, 0};
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unsigned long recent_rotated[ANON_AND_FILE] = {};
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unsigned long recent_scanned[ANON_AND_FILE] = {};
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for_each_online_pgdat(pgdat) {
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mz = mem_cgroup_nodeinfo(memcg, pgdat->node_id);
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+1
-3
@@ -2346,7 +2346,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
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{
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int swappiness = mem_cgroup_swappiness(memcg);
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struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
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u64 fraction[2];
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u64 fraction[ANON_AND_FILE];
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u64 denominator = 0; /* gcc */
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struct pglist_data *pgdat = lruvec_pgdat(lruvec);
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unsigned long anon_prio, file_prio;
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@@ -2458,8 +2458,6 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
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* Because workloads change over time (and to avoid overflow)
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* we keep these statistics as a floating average, which ends
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* up weighing recent references more than old ones.
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*
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* anon in [0], file in [1]
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*/
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anon = lruvec_lru_size(lruvec, LRU_ACTIVE_ANON, MAX_NR_ZONES) +
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