[03/16] mm: vmstat: convert slab vmstat counter to bytes

Message ID	20191018002820.307763-4-guro@fb.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=Fj1U=YL=kvack.org=owner-linux-mm@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 71D5621852 Smtp-Origin-Hostprefix: devvm From: Roman Gushchin <guro@fb.com> Smtp-Origin-Hostname: devvm2643.prn2.facebook.com To: <linux-mm@kvack.org> CC: Michal Hocko <mhocko@kernel.org>, Johannes Weiner <hannes@cmpxchg.org>, <linux-kernel@vger.kernel.org>, <kernel-team@fb.com>, Shakeel Butt <shakeelb@google.com>, Vladimir Davydov <vdavydov.dev@gmail.com>, Waiman Long <longman@redhat.com>, Christoph Lameter <cl@linux.com>, Roman Gushchin <guro@fb.com> Smtp-Origin-Cluster: prn2c23 Subject: [PATCH 03/16] mm: vmstat: convert slab vmstat counter to bytes Date: Thu, 17 Oct 2019 17:28:07 -0700 Message-ID: <20191018002820.307763-4-guro@fb.com> In-Reply-To: <20191018002820.307763-1-guro@fb.com> References: <20191018002820.307763-1-guro@fb.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	The new slab memory controller \| expand [00/16] The new slab memory controller [01/16] mm: memcg: introduce mem_cgroup_ptr [02/16] mm: vmstat: use s32 for vm_node_stat_diff in struct per_cpu_nodestat [03/16] mm: vmstat: convert slab vmstat counter to bytes [04/16] mm: memcg/slab: allocate space for memcg ownership data for non-root slabs [05/16] mm: slub: implement SLUB version of obj_to_index() [06/16] mm: memcg/slab: save memcg ownership data for non-root slab objects [07/16] mm: memcg: move memcg_kmem_bypass() to memcontrol.h [08/16] mm: memcg: introduce __mod_lruvec_memcg_state() [09/16] mm: memcg/slab: charge individual slab objects instead of pages [10/16] mm: memcg: move get_mem_cgroup_from_current() to memcontrol.h [11/16] mm: memcg/slab: replace memcg_from_slab_page() with memcg_from_slab_obj() [12/16] tools/cgroup: add slabinfo.py tool [13/16] mm: memcg/slab: deprecate memory.kmem.slabinfo [14/16] mm: memcg/slab: use one set of kmem_caches for all memory cgroups [15/16] tools/cgroup: make slabinfo.py compatible with new slab controller [16/16] mm: slab: remove redundant check in memcg_accumulate_slabinfo()

diff --git a/drivers/base/node.c b/drivers/base/node.c index 98a31bafc8a2..fa07c5806dcd 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -368,8 +368,8 @@ static ssize_t node_read_meminfo(struct device *dev, unsigned long sreclaimable, sunreclaimable; si_meminfo_node(&i, nid); - sreclaimable = node_page_state(pgdat, NR_SLAB_RECLAIMABLE); - sunreclaimable = node_page_state(pgdat, NR_SLAB_UNRECLAIMABLE); + sreclaimable = node_page_state_pages(pgdat, NR_SLAB_RECLAIMABLE_B); + sunreclaimable = node_page_state_pages(pgdat, NR_SLAB_UNRECLAIMABLE_B); n = sprintf(buf, "Node %d MemTotal: %8lu kB\n" "Node %d MemFree: %8lu kB\n" @@ -505,9 +505,13 @@ static ssize_t node_read_vmstat(struct device *dev, sum_zone_numa_state(nid, i)); #endif - for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) - n += sprintf(buf+n, "%s %lu\n", node_stat_name(i), - node_page_state(pgdat, i)); + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { + unsigned long x = node_page_state(pgdat, i); + + if (vmstat_item_in_bytes(i)) + x >>= PAGE_SHIFT; + n += sprintf(buf+n, "%s %lu\n", node_stat_name(i), x); + } return n; } diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index ac9247371871..87afa8683c1b 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -53,8 +53,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v) pages[lru] = global_node_page_state(NR_LRU_BASE + lru); available = si_mem_available(); - sreclaimable = global_node_page_state(NR_SLAB_RECLAIMABLE); - sunreclaim = global_node_page_state(NR_SLAB_UNRECLAIMABLE); + sreclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B); + sunreclaim = global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B); show_val_kb(m, "MemTotal: ", i.totalram); show_val_kb(m, "MemFree: ", i.freeram); diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 4d8adaa5d59c..e20c200bff95 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -215,8 +215,8 @@ enum node_stat_item { NR_INACTIVE_FILE, /* " " " " " */ NR_ACTIVE_FILE, /* " " " " " */ NR_UNEVICTABLE, /* " " " " " */ - NR_SLAB_RECLAIMABLE, /* Please do not reorder this item */ - NR_SLAB_UNRECLAIMABLE, /* and this one without looking at + NR_SLAB_RECLAIMABLE_B, /* Please do not reorder this item */ + NR_SLAB_UNRECLAIMABLE_B,/* and this one without looking at * memcg_flush_percpu_vmstats() first. */ NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */ NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */ @@ -247,6 +247,12 @@ enum node_stat_item { NR_VM_NODE_STAT_ITEMS }; +static __always_inline bool vmstat_item_in_bytes(enum node_stat_item item) +{ + return (item == NR_SLAB_RECLAIMABLE_B || + item == NR_SLAB_UNRECLAIMABLE_B); +} + /* * We do arithmetic on the LRU lists in various places in the code, * so it is important to keep the active lists LRU_ACTIVE higher in diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 292485f3d24d..5b0f61b3ca75 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -200,6 +200,12 @@ static inline unsigned long global_node_page_state(enum node_stat_item item) return x; } +static inline +unsigned long global_node_page_state_pages(enum node_stat_item item) +{ + return global_node_page_state(item) >> PAGE_SHIFT; +} + static inline unsigned long zone_page_state(struct zone *zone, enum zone_stat_item item) { @@ -240,6 +246,8 @@ extern unsigned long sum_zone_node_page_state(int node, extern unsigned long sum_zone_numa_state(int node, enum numa_stat_item item); extern unsigned long node_page_state(struct pglist_data *pgdat, enum node_stat_item item); +extern unsigned long node_page_state_pages(struct pglist_data *pgdat, + enum node_stat_item item); #else #define sum_zone_node_page_state(node, item) global_zone_page_state(item) #define node_page_state(node, item) global_node_page_state(item) diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 26b9168321e7..d3911f75c39b 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1666,7 +1666,7 @@ static unsigned long minimum_image_size(unsigned long saveable) { unsigned long size; - size = global_node_page_state(NR_SLAB_RECLAIMABLE) + size = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B) + global_node_page_state(NR_ACTIVE_ANON) + global_node_page_state(NR_INACTIVE_ANON) + global_node_page_state(NR_ACTIVE_FILE) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index cd8ac747827e..9303e98b0718 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -751,13 +751,16 @@ mem_cgroup_largest_soft_limit_node(struct mem_cgroup_tree_per_node *mctz) */ void __mod_memcg_state(struct mem_cgroup *memcg, int idx, int val) { - long x; + long x, threshold = MEMCG_CHARGE_BATCH; if (mem_cgroup_disabled()) return; + if (vmstat_item_in_bytes(idx)) + threshold <<= PAGE_SHIFT; + x = val + __this_cpu_read(memcg->vmstats_percpu->stat[idx]); - if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { + if (unlikely(abs(x) > threshold)) { struct mem_cgroup *mi; /* @@ -799,7 +802,7 @@ void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx, pg_data_t *pgdat = lruvec_pgdat(lruvec); struct mem_cgroup_per_node *pn; struct mem_cgroup *memcg; - long x; + long x, threshold = MEMCG_CHARGE_BATCH; /* Update node */ __mod_node_page_state(pgdat, idx, val); @@ -816,8 +819,11 @@ void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx, /* Update lruvec */ __this_cpu_add(pn->lruvec_stat_local->count[idx], val); + if (vmstat_item_in_bytes(idx)) + threshold <<= PAGE_SHIFT; + x = val + __this_cpu_read(pn->lruvec_stat_cpu->count[idx]); - if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { + if (unlikely(abs(x) > threshold)) { struct mem_cgroup_per_node *pi; for (pi = pn; pi; pi = parent_nodeinfo(pi, pgdat->node_id)) @@ -1466,9 +1472,8 @@ static char *memory_stat_format(struct mem_cgroup *memcg) (u64)memcg_page_state(memcg, MEMCG_KERNEL_STACK_KB) * 1024); seq_buf_printf(&s, "slab %llu\n", - (u64)(memcg_page_state(memcg, NR_SLAB_RECLAIMABLE) + - memcg_page_state(memcg, NR_SLAB_UNRECLAIMABLE)) * - PAGE_SIZE); + (u64)(memcg_page_state(memcg, NR_SLAB_RECLAIMABLE_B) + + memcg_page_state(memcg, NR_SLAB_UNRECLAIMABLE_B))); seq_buf_printf(&s, "sock %llu\n", (u64)memcg_page_state(memcg, MEMCG_SOCK) * PAGE_SIZE); @@ -1502,11 +1507,9 @@ static char *memory_stat_format(struct mem_cgroup *memcg) PAGE_SIZE); seq_buf_printf(&s, "slab_reclaimable %llu\n", - (u64)memcg_page_state(memcg, NR_SLAB_RECLAIMABLE) * - PAGE_SIZE); + (u64)memcg_page_state(memcg, NR_SLAB_RECLAIMABLE_B)); seq_buf_printf(&s, "slab_unreclaimable %llu\n", - (u64)memcg_page_state(memcg, NR_SLAB_UNRECLAIMABLE) * - PAGE_SIZE); + (u64)memcg_page_state(memcg, NR_SLAB_UNRECLAIMABLE_B)); /* Accumulated memory events */ @@ -3582,8 +3585,8 @@ static void memcg_flush_percpu_vmstats(struct mem_cgroup *memcg, bool slab_only) int min_idx, max_idx; if (slab_only) { - min_idx = NR_SLAB_RECLAIMABLE; - max_idx = NR_SLAB_UNRECLAIMABLE; + min_idx = NR_SLAB_RECLAIMABLE_B; + max_idx = NR_SLAB_UNRECLAIMABLE_B; } else { min_idx = 0; max_idx = MEMCG_NR_STAT; diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 314ce1a3cf25..61476bf0f147 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -183,7 +183,7 @@ static bool is_dump_unreclaim_slabs(void) global_node_page_state(NR_ISOLATED_FILE) + global_node_page_state(NR_UNEVICTABLE); - return (global_node_page_state(NR_SLAB_UNRECLAIMABLE) > nr_lru); + return (global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B) > nr_lru); } /** diff --git a/mm/page_alloc.c b/mm/page_alloc.c index cd1dd0712624..c037bdaa73a1 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5130,8 +5130,8 @@ long si_mem_available(void) * items that are in use, and cannot be freed. Cap this estimate at the * low watermark. */ - reclaimable = global_node_page_state(NR_SLAB_RECLAIMABLE) + - global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE); + reclaimable = global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B) + + global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE); available += reclaimable - min(reclaimable / 2, wmark_low); if (available < 0) @@ -5275,8 +5275,8 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) global_node_page_state(NR_FILE_DIRTY), global_node_page_state(NR_WRITEBACK), global_node_page_state(NR_UNSTABLE_NFS), - global_node_page_state(NR_SLAB_RECLAIMABLE), - global_node_page_state(NR_SLAB_UNRECLAIMABLE), + global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B), + global_node_page_state_pages(NR_SLAB_UNRECLAIMABLE_B), global_node_page_state(NR_FILE_MAPPED), global_node_page_state(NR_SHMEM), global_zone_page_state(NR_PAGETABLE), diff --git a/mm/slab.h b/mm/slab.h index 3eb29ae75743..03833b02b9ae 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -272,7 +272,7 @@ int __kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **); static inline int cache_vmstat_idx(struct kmem_cache *s) { return (s->flags & SLAB_RECLAIM_ACCOUNT) ? - NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE; + NR_SLAB_RECLAIMABLE_B : NR_SLAB_UNRECLAIMABLE_B; } #ifdef CONFIG_MEMCG_KMEM @@ -360,7 +360,7 @@ static __always_inline int memcg_charge_slab(struct page *page, if (unlikely(!memcg || mem_cgroup_is_root(memcg))) { mod_node_page_state(page_pgdat(page), cache_vmstat_idx(s), - (1 << order)); + (PAGE_SIZE << order)); percpu_ref_get_many(&s->memcg_params.refcnt, 1 << order); return 0; } @@ -370,7 +370,7 @@ static __always_inline int memcg_charge_slab(struct page *page, goto out; lruvec = mem_cgroup_lruvec(page_pgdat(page), memcg); - mod_lruvec_state(lruvec, cache_vmstat_idx(s), 1 << order); + mod_lruvec_state(lruvec, cache_vmstat_idx(s), PAGE_SIZE << order); /* transer try_charge() page references to kmem_cache */ percpu_ref_get_many(&s->memcg_params.refcnt, 1 << order); @@ -394,11 +394,12 @@ static __always_inline void memcg_uncharge_slab(struct page *page, int order, memcg = READ_ONCE(s->memcg_params.memcg); if (likely(!mem_cgroup_is_root(memcg))) { lruvec = mem_cgroup_lruvec(page_pgdat(page), memcg); - mod_lruvec_state(lruvec, cache_vmstat_idx(s), -(1 << order)); + mod_lruvec_state(lruvec, cache_vmstat_idx(s), + -(PAGE_SIZE << order)); memcg_kmem_uncharge_memcg(page, order, memcg); } else { mod_node_page_state(page_pgdat(page), cache_vmstat_idx(s), - -(1 << order)); + -(PAGE_SIZE << order)); } rcu_read_unlock(); @@ -482,7 +483,7 @@ static __always_inline int charge_slab_page(struct page *page, { if (is_root_cache(s)) { mod_node_page_state(page_pgdat(page), cache_vmstat_idx(s), - 1 << order); + PAGE_SIZE << order); return 0; } @@ -494,7 +495,7 @@ static __always_inline void uncharge_slab_page(struct page *page, int order, { if (is_root_cache(s)) { mod_node_page_state(page_pgdat(page), cache_vmstat_idx(s), - -(1 << order)); + -(PAGE_SIZE << order)); return; } diff --git a/mm/slab_common.c b/mm/slab_common.c index 8afa188f6e20..f0f7f955c5fa 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1311,8 +1311,8 @@ void *kmalloc_order(size_t size, gfp_t flags, unsigned int order) page = alloc_pages(flags, order); if (likely(page)) { ret = page_address(page); - mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE, - 1 << order); + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, + PAGE_SIZE << order); } ret = kasan_kmalloc_large(ret, size, flags); /* As ret might get tagged, call kmemleak hook after KASAN. */ diff --git a/mm/slob.c b/mm/slob.c index fa53e9f73893..8b7b56235438 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -202,8 +202,8 @@ static void *slob_new_pages(gfp_t gfp, int order, int node) if (!page) return NULL; - mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE, - 1 << order); + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, + PAGE_SIZE << order); return page_address(page); } @@ -214,8 +214,8 @@ static void slob_free_pages(void *b, int order) if (current->reclaim_state) current->reclaim_state->reclaimed_slab += 1 << order; - mod_node_page_state(page_pgdat(sp), NR_SLAB_UNRECLAIMABLE, - -(1 << order)); + mod_node_page_state(page_pgdat(sp), NR_SLAB_UNRECLAIMABLE_B, + -(PAGE_SIZE << order)); __free_pages(sp, order); } @@ -550,8 +550,8 @@ void kfree(const void *block) slob_free(m, *m + align); } else { unsigned int order = compound_order(sp); - mod_node_page_state(page_pgdat(sp), NR_SLAB_UNRECLAIMABLE, - -(1 << order)); + mod_node_page_state(page_pgdat(sp), NR_SLAB_UNRECLAIMABLE_B, + -(PAGE_SIZE << order)); __free_pages(sp, order); } diff --git a/mm/slub.c b/mm/slub.c index 249e4c8be66a..bd902d65a71c 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3838,8 +3838,8 @@ static void *kmalloc_large_node(size_t size, gfp_t flags, int node) page = alloc_pages_node(node, flags, order); if (page) { ptr = page_address(page); - mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE, - 1 << order); + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, + PAGE_SIZE << order); } return kmalloc_large_node_hook(ptr, size, flags); @@ -3970,8 +3970,8 @@ void kfree(const void *x) BUG_ON(!PageCompound(page)); kfree_hook(object); - mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE, - -(1 << order)); + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, + -(PAGE_SIZE << order)); __free_pages(page, order); return; } diff --git a/mm/vmscan.c b/mm/vmscan.c index 50c81463797b..990e4b455b7d 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -4272,7 +4272,8 @@ int node_reclaim(struct pglist_data *pgdat, gfp_t gfp_mask, unsigned int order) * unmapped file backed pages. */ if (node_pagecache_reclaimable(pgdat) <= pgdat->min_unmapped_pages && - node_page_state(pgdat, NR_SLAB_RECLAIMABLE) <= pgdat->min_slab_pages) + node_page_state_pages(pgdat, NR_SLAB_RECLAIMABLE_B) <= + pgdat->min_slab_pages) return NODE_RECLAIM_FULL; /* diff --git a/mm/vmstat.c b/mm/vmstat.c index 3375e7f45891..1d10ffcecb9f 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -344,6 +344,8 @@ void __mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item, x = delta + __this_cpu_read(*p); t = __this_cpu_read(pcp->stat_threshold); + if (vmstat_item_in_bytes(item)) + t <<= PAGE_SHIFT; if (unlikely(x > t || x < -t)) { node_page_state_add(x, pgdat, item); @@ -555,6 +557,8 @@ static inline void mod_node_state(struct pglist_data *pgdat, * for all cpus in a node. */ t = this_cpu_read(pcp->stat_threshold); + if (vmstat_item_in_bytes(item)) + t <<= PAGE_SHIFT; o = this_cpu_read(*p); n = delta + o; @@ -999,6 +1003,12 @@ unsigned long node_page_state(struct pglist_data *pgdat, #endif return x; } + +unsigned long node_page_state_pages(struct pglist_data *pgdat, + enum node_stat_item item) +{ + return node_page_state(pgdat, item) >> PAGE_SHIFT; +} #endif #ifdef CONFIG_COMPACTION @@ -1548,8 +1558,12 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, if (is_zone_first_populated(pgdat, zone)) { seq_printf(m, "\n per-node stats"); for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { + unsigned long x = node_page_state(pgdat, i); + + if (vmstat_item_in_bytes(i)) + x >>= PAGE_SHIFT; seq_printf(m, "\n %-12s %lu", node_stat_name(i), - node_page_state(pgdat, i)); + x); } } seq_printf(m, @@ -1671,8 +1685,11 @@ static void *vmstat_start(struct seq_file *m, loff_t *pos) v += NR_VM_NUMA_STAT_ITEMS; #endif - for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { v[i] = global_node_page_state(i); + if (vmstat_item_in_bytes(i)) + v[i] >>= PAGE_SHIFT; + } v += NR_VM_NODE_STAT_ITEMS; global_dirty_limits(v + NR_DIRTY_BG_THRESHOLD, diff --git a/mm/workingset.c b/mm/workingset.c index c963831d354f..675792387e58 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -430,8 +430,10 @@ static unsigned long count_shadow_nodes(struct shrinker *shrinker, for (pages = 0, i = 0; i < NR_LRU_LISTS; i++) pages += lruvec_page_state_local(lruvec, NR_LRU_BASE + i); - pages += lruvec_page_state_local(lruvec, NR_SLAB_RECLAIMABLE); - pages += lruvec_page_state_local(lruvec, NR_SLAB_UNRECLAIMABLE); + pages += lruvec_page_state_local( + lruvec, NR_SLAB_RECLAIMABLE_B) >> PAGE_SHIFT; + pages += lruvec_page_state_local( + lruvec, NR_SLAB_UNRECLAIMABLE_B) >> PAGE_SHIFT; } else #endif pages = node_present_pages(sc->nid);

[03/16] mm: vmstat: convert slab vmstat counter to bytes

Commit Message

Patch