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mm/vmstat.c
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// SPDX-License-Identifier: GPL-2.0-only |
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/* * linux/mm/vmstat.c * * Manages VM statistics * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds |
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* * zoned VM statistics * Copyright (C) 2006 Silicon Graphics, Inc., * Christoph Lameter <christoph@lameter.com> |
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* Copyright (C) 2008-2014 Christoph Lameter |
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*/ |
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#include <linux/fs.h> |
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#include <linux/mm.h> |
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#include <linux/err.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/cpu.h> |
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#include <linux/cpumask.h> |
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#include <linux/vmstat.h> |
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#include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/debugfs.h> |
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#include <linux/sched.h> |
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#include <linux/math64.h> |
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#include <linux/writeback.h> |
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#include <linux/compaction.h> |
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#include <linux/mm_inline.h> |
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#include <linux/page_ext.h> #include <linux/page_owner.h> |
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#include "internal.h" |
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#define NUMA_STATS_THRESHOLD (U16_MAX - 2) |
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#ifdef CONFIG_NUMA int sysctl_vm_numa_stat = ENABLE_NUMA_STAT; /* zero numa counters within a zone */ static void zero_zone_numa_counters(struct zone *zone) { int item, cpu; for (item = 0; item < NR_VM_NUMA_STAT_ITEMS; item++) { atomic_long_set(&zone->vm_numa_stat[item], 0); for_each_online_cpu(cpu) per_cpu_ptr(zone->pageset, cpu)->vm_numa_stat_diff[item] = 0; } } /* zero numa counters of all the populated zones */ static void zero_zones_numa_counters(void) { struct zone *zone; for_each_populated_zone(zone) zero_zone_numa_counters(zone); } /* zero global numa counters */ static void zero_global_numa_counters(void) { int item; for (item = 0; item < NR_VM_NUMA_STAT_ITEMS; item++) atomic_long_set(&vm_numa_stat[item], 0); } static void invalid_numa_statistics(void) { zero_zones_numa_counters(); zero_global_numa_counters(); } static DEFINE_MUTEX(vm_numa_stat_lock); int sysctl_vm_numa_stat_handler(struct ctl_table *table, int write, |
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void *buffer, size_t *length, loff_t *ppos) |
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{ int ret, oldval; mutex_lock(&vm_numa_stat_lock); if (write) oldval = sysctl_vm_numa_stat; ret = proc_dointvec_minmax(table, write, buffer, length, ppos); if (ret || !write) goto out; if (oldval == sysctl_vm_numa_stat) goto out; else if (sysctl_vm_numa_stat == ENABLE_NUMA_STAT) { static_branch_enable(&vm_numa_stat_key); pr_info("enable numa statistics "); } else { static_branch_disable(&vm_numa_stat_key); invalid_numa_statistics(); pr_info("disable numa statistics, and clear numa counters "); } out: mutex_unlock(&vm_numa_stat_lock); return ret; } #endif |
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#ifdef CONFIG_VM_EVENT_COUNTERS DEFINE_PER_CPU(struct vm_event_state, vm_event_states) = {{0}}; EXPORT_PER_CPU_SYMBOL(vm_event_states); |
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static void sum_vm_events(unsigned long *ret) |
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{ |
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int cpu; |
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int i; memset(ret, 0, NR_VM_EVENT_ITEMS * sizeof(unsigned long)); |
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for_each_online_cpu(cpu) { |
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struct vm_event_state *this = &per_cpu(vm_event_states, cpu); |
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for (i = 0; i < NR_VM_EVENT_ITEMS; i++) ret[i] += this->event[i]; } } /* * Accumulate the vm event counters across all CPUs. * The result is unavoidably approximate - it can change * during and after execution of this function. */ void all_vm_events(unsigned long *ret) { |
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get_online_cpus(); |
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sum_vm_events(ret); |
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put_online_cpus(); |
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} |
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EXPORT_SYMBOL_GPL(all_vm_events); |
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/* * Fold the foreign cpu events into our own. * * This is adding to the events on one processor * but keeps the global counts constant. */ void vm_events_fold_cpu(int cpu) { struct vm_event_state *fold_state = &per_cpu(vm_event_states, cpu); int i; for (i = 0; i < NR_VM_EVENT_ITEMS; i++) { count_vm_events(i, fold_state->event[i]); fold_state->event[i] = 0; } } |
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#endif /* CONFIG_VM_EVENT_COUNTERS */ |
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/* * Manage combined zone based / global counters * * vm_stat contains the global counters */ |
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atomic_long_t vm_zone_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp; |
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atomic_long_t vm_numa_stat[NR_VM_NUMA_STAT_ITEMS] __cacheline_aligned_in_smp; |
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atomic_long_t vm_node_stat[NR_VM_NODE_STAT_ITEMS] __cacheline_aligned_in_smp; EXPORT_SYMBOL(vm_zone_stat); |
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EXPORT_SYMBOL(vm_numa_stat); |
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EXPORT_SYMBOL(vm_node_stat); |
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#ifdef CONFIG_SMP |
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int calculate_pressure_threshold(struct zone *zone) |
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{ int threshold; int watermark_distance; /* * As vmstats are not up to date, there is drift between the estimated * and real values. For high thresholds and a high number of CPUs, it * is possible for the min watermark to be breached while the estimated * value looks fine. The pressure threshold is a reduced value such * that even the maximum amount of drift will not accidentally breach * the min watermark */ watermark_distance = low_wmark_pages(zone) - min_wmark_pages(zone); threshold = max(1, (int)(watermark_distance / num_online_cpus())); /* * Maximum threshold is 125 */ threshold = min(125, threshold); return threshold; } |
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int calculate_normal_threshold(struct zone *zone) |
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{ int threshold; int mem; /* memory in 128 MB units */ /* * The threshold scales with the number of processors and the amount * of memory per zone. More memory means that we can defer updates for * longer, more processors could lead to more contention. * fls() is used to have a cheap way of logarithmic scaling. * * Some sample thresholds: * * Threshold Processors (fls) Zonesize fls(mem+1) * ------------------------------------------------------------------ * 8 1 1 0.9-1 GB 4 * 16 2 2 0.9-1 GB 4 * 20 2 2 1-2 GB 5 * 24 2 2 2-4 GB 6 * 28 2 2 4-8 GB 7 * 32 2 2 8-16 GB 8 * 4 2 2 <128M 1 * 30 4 3 2-4 GB 5 * 48 4 3 8-16 GB 8 * 32 8 4 1-2 GB 4 * 32 8 4 0.9-1GB 4 * 10 16 5 <128M 1 * 40 16 5 900M 4 * 70 64 7 2-4 GB 5 * 84 64 7 4-8 GB 6 * 108 512 9 4-8 GB 6 * 125 1024 10 8-16 GB 8 * 125 1024 10 16-32 GB 9 */ |
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mem = zone_managed_pages(zone) >> (27 - PAGE_SHIFT); |
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threshold = 2 * fls(num_online_cpus()) * (1 + fls(mem)); /* * Maximum threshold is 125 */ threshold = min(125, threshold); return threshold; } |
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/* |
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* Refresh the thresholds for each zone. |
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*/ |
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void refresh_zone_stat_thresholds(void) |
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{ |
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struct pglist_data *pgdat; |
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struct zone *zone; int cpu; int threshold; |
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/* Zero current pgdat thresholds */ for_each_online_pgdat(pgdat) { for_each_online_cpu(cpu) { per_cpu_ptr(pgdat->per_cpu_nodestats, cpu)->stat_threshold = 0; } } |
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for_each_populated_zone(zone) { |
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struct pglist_data *pgdat = zone->zone_pgdat; |
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unsigned long max_drift, tolerate_drift; |
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threshold = calculate_normal_threshold(zone); |
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|
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for_each_online_cpu(cpu) { int pgdat_threshold; |
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per_cpu_ptr(zone->pageset, cpu)->stat_threshold = threshold; |
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/* Base nodestat threshold on the largest populated zone. */ pgdat_threshold = per_cpu_ptr(pgdat->per_cpu_nodestats, cpu)->stat_threshold; per_cpu_ptr(pgdat->per_cpu_nodestats, cpu)->stat_threshold = max(threshold, pgdat_threshold); } |
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/* * Only set percpu_drift_mark if there is a danger that * NR_FREE_PAGES reports the low watermark is ok when in fact * the min watermark could be breached by an allocation */ tolerate_drift = low_wmark_pages(zone) - min_wmark_pages(zone); max_drift = num_online_cpus() * threshold; if (max_drift > tolerate_drift) zone->percpu_drift_mark = high_wmark_pages(zone) + max_drift; |
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} |
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} |
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void set_pgdat_percpu_threshold(pg_data_t *pgdat, int (*calculate_pressure)(struct zone *)) |
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{ struct zone *zone; int cpu; int threshold; int i; |
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for (i = 0; i < pgdat->nr_zones; i++) { zone = &pgdat->node_zones[i]; if (!zone->percpu_drift_mark) continue; |
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threshold = (*calculate_pressure)(zone); |
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for_each_online_cpu(cpu) |
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per_cpu_ptr(zone->pageset, cpu)->stat_threshold = threshold; } |
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} |
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/* |
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* For use when we know that interrupts are disabled, * or when we know that preemption is disabled and that * particular counter cannot be updated from interrupt context. |
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*/ void __mod_zone_page_state(struct zone *zone, enum zone_stat_item item, |
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long delta) |
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{ |
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struct per_cpu_pageset __percpu *pcp = zone->pageset; s8 __percpu *p = pcp->vm_stat_diff + item; |
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long x; |
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long t; x = delta + __this_cpu_read(*p); |
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t = __this_cpu_read(pcp->stat_threshold); |
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if (unlikely(abs(x) > t)) { |
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zone_page_state_add(x, zone, item); x = 0; } |
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__this_cpu_write(*p, x); |
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} EXPORT_SYMBOL(__mod_zone_page_state); |
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void __mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item, long delta) { struct per_cpu_nodestat __percpu *pcp = pgdat->per_cpu_nodestats; s8 __percpu *p = pcp->vm_node_stat_diff + item; long x; long t; |
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if (vmstat_item_in_bytes(item)) { VM_WARN_ON_ONCE(delta & (PAGE_SIZE - 1)); delta >>= PAGE_SHIFT; } |
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x = delta + __this_cpu_read(*p); t = __this_cpu_read(pcp->stat_threshold); |
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if (unlikely(abs(x) > t)) { |
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node_page_state_add(x, pgdat, item); x = 0; } __this_cpu_write(*p, x); } EXPORT_SYMBOL(__mod_node_page_state); |
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/* |
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* Optimized increment and decrement functions. * * These are only for a single page and therefore can take a struct page * * argument instead of struct zone *. This allows the inclusion of the code * generated for page_zone(page) into the optimized functions. * * No overflow check is necessary and therefore the differential can be * incremented or decremented in place which may allow the compilers to * generate better code. |
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* The increment or decrement is known and therefore one boundary check can * be omitted. * |
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* NOTE: These functions are very performance sensitive. Change only * with care. * |
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* Some processors have inc/dec instructions that are atomic vs an interrupt. * However, the code must first determine the differential location in a zone * based on the processor number and then inc/dec the counter. There is no * guarantee without disabling preemption that the processor will not change * in between and therefore the atomicity vs. interrupt cannot be exploited * in a useful way here. */ |
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void __inc_zone_state(struct zone *zone, enum zone_stat_item item) |
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{ |
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struct per_cpu_pageset __percpu *pcp = zone->pageset; s8 __percpu *p = pcp->vm_stat_diff + item; s8 v, t; |
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|
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v = __this_cpu_inc_return(*p); |
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t = __this_cpu_read(pcp->stat_threshold); if (unlikely(v > t)) { s8 overstep = t >> 1; |
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zone_page_state_add(v + overstep, zone, item); __this_cpu_write(*p, -overstep); |
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} } |
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|
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void __inc_node_state(struct pglist_data *pgdat, enum node_stat_item item) { struct per_cpu_nodestat __percpu *pcp = pgdat->per_cpu_nodestats; s8 __percpu *p = pcp->vm_node_stat_diff + item; s8 v, t; |
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VM_WARN_ON_ONCE(vmstat_item_in_bytes(item)); |
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v = __this_cpu_inc_return(*p); t = __this_cpu_read(pcp->stat_threshold); if (unlikely(v > t)) { s8 overstep = t >> 1; node_page_state_add(v + overstep, pgdat, item); __this_cpu_write(*p, -overstep); } } |
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void __inc_zone_page_state(struct page *page, enum zone_stat_item item) { __inc_zone_state(page_zone(page), item); } |
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EXPORT_SYMBOL(__inc_zone_page_state); |
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void __inc_node_page_state(struct page *page, enum node_stat_item item) { __inc_node_state(page_pgdat(page), item); } EXPORT_SYMBOL(__inc_node_page_state); |
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void __dec_zone_state(struct zone *zone, enum zone_stat_item item) |
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{ |
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struct per_cpu_pageset __percpu *pcp = zone->pageset; s8 __percpu *p = pcp->vm_stat_diff + item; s8 v, t; |
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v = __this_cpu_dec_return(*p); |
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t = __this_cpu_read(pcp->stat_threshold); if (unlikely(v < - t)) { s8 overstep = t >> 1; |
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zone_page_state_add(v - overstep, zone, item); __this_cpu_write(*p, overstep); |
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} } |
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|
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void __dec_node_state(struct pglist_data *pgdat, enum node_stat_item item) { struct per_cpu_nodestat __percpu *pcp = pgdat->per_cpu_nodestats; s8 __percpu *p = pcp->vm_node_stat_diff + item; s8 v, t; |
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VM_WARN_ON_ONCE(vmstat_item_in_bytes(item)); |
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v = __this_cpu_dec_return(*p); t = __this_cpu_read(pcp->stat_threshold); if (unlikely(v < - t)) { s8 overstep = t >> 1; node_page_state_add(v - overstep, pgdat, item); __this_cpu_write(*p, overstep); } } |
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void __dec_zone_page_state(struct page *page, enum zone_stat_item item) { __dec_zone_state(page_zone(page), item); } |
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EXPORT_SYMBOL(__dec_zone_page_state); |
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void __dec_node_page_state(struct page *page, enum node_stat_item item) { __dec_node_state(page_pgdat(page), item); } EXPORT_SYMBOL(__dec_node_page_state); |
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#ifdef CONFIG_HAVE_CMPXCHG_LOCAL |
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/* * If we have cmpxchg_local support then we do not need to incur the overhead * that comes with local_irq_save/restore if we use this_cpu_cmpxchg. * * mod_state() modifies the zone counter state through atomic per cpu * operations. * * Overstep mode specifies how overstep should handled: * 0 No overstepping * 1 Overstepping half of threshold * -1 Overstepping minus half of threshold */ |
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static inline void mod_zone_state(struct zone *zone, enum zone_stat_item item, long delta, int overstep_mode) |
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{ struct per_cpu_pageset __percpu *pcp = zone->pageset; s8 __percpu *p = pcp->vm_stat_diff + item; long o, n, t, z; do { z = 0; /* overflow to zone counters */ /* * The fetching of the stat_threshold is racy. We may apply * a counter threshold to the wrong the cpu if we get |
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* rescheduled while executing here. However, the next * counter update will apply the threshold again and * therefore bring the counter under the threshold again. * * Most of the time the thresholds are the same anyways * for all cpus in a zone. |
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*/ t = this_cpu_read(pcp->stat_threshold); o = this_cpu_read(*p); n = delta + o; |
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if (abs(n) > t) { |
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int os = overstep_mode * (t >> 1) ; /* Overflow must be added to zone counters */ z = n + os; n = -os; } } while (this_cpu_cmpxchg(*p, o, n) != o); if (z) zone_page_state_add(z, zone, item); } void mod_zone_page_state(struct zone *zone, enum zone_stat_item item, |
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long delta) |
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{ |
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mod_zone_state(zone, item, delta, 0); |
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499 500 |
} EXPORT_SYMBOL(mod_zone_page_state); |
7c8391206 vmstat: User per ... |
501 502 |
void inc_zone_page_state(struct page *page, enum zone_stat_item item) { |
75ef71840 mm, vmstat: add i... |
503 |
mod_zone_state(page_zone(page), item, 1, 1); |
7c8391206 vmstat: User per ... |
504 505 506 507 508 |
} EXPORT_SYMBOL(inc_zone_page_state); void dec_zone_page_state(struct page *page, enum zone_stat_item item) { |
75ef71840 mm, vmstat: add i... |
509 |
mod_zone_state(page_zone(page), item, -1, -1); |
7c8391206 vmstat: User per ... |
510 511 |
} EXPORT_SYMBOL(dec_zone_page_state); |
75ef71840 mm, vmstat: add i... |
512 513 514 515 516 517 518 |
static inline void mod_node_state(struct pglist_data *pgdat, enum node_stat_item item, int delta, int overstep_mode) { struct per_cpu_nodestat __percpu *pcp = pgdat->per_cpu_nodestats; s8 __percpu *p = pcp->vm_node_stat_diff + item; long o, n, t, z; |
ea426c2a7 mm: memcg: prepar... |
519 520 521 522 |
if (vmstat_item_in_bytes(item)) { VM_WARN_ON_ONCE(delta & (PAGE_SIZE - 1)); delta >>= PAGE_SHIFT; } |
75ef71840 mm, vmstat: add i... |
523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 |
do { z = 0; /* overflow to node counters */ /* * The fetching of the stat_threshold is racy. We may apply * a counter threshold to the wrong the cpu if we get * rescheduled while executing here. However, the next * counter update will apply the threshold again and * therefore bring the counter under the threshold again. * * Most of the time the thresholds are the same anyways * for all cpus in a node. */ t = this_cpu_read(pcp->stat_threshold); o = this_cpu_read(*p); n = delta + o; |
406100762 mm/vmstat.c: use ... |
540 |
if (abs(n) > t) { |
75ef71840 mm, vmstat: add i... |
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 |
int os = overstep_mode * (t >> 1) ; /* Overflow must be added to node counters */ z = n + os; n = -os; } } while (this_cpu_cmpxchg(*p, o, n) != o); if (z) node_page_state_add(z, pgdat, item); } void mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item, long delta) { mod_node_state(pgdat, item, delta, 0); } EXPORT_SYMBOL(mod_node_page_state); void inc_node_state(struct pglist_data *pgdat, enum node_stat_item item) { mod_node_state(pgdat, item, 1, 1); } void inc_node_page_state(struct page *page, enum node_stat_item item) { mod_node_state(page_pgdat(page), item, 1, 1); } EXPORT_SYMBOL(inc_node_page_state); void dec_node_page_state(struct page *page, enum node_stat_item item) { mod_node_state(page_pgdat(page), item, -1, -1); } EXPORT_SYMBOL(dec_node_page_state); |
7c8391206 vmstat: User per ... |
576 577 578 579 580 |
#else /* * Use interrupt disable to serialize counter updates */ void mod_zone_page_state(struct zone *zone, enum zone_stat_item item, |
6cdb18ad9 mm/vmstat: fix ov... |
581 |
long delta) |
7c8391206 vmstat: User per ... |
582 583 584 585 586 587 588 589 |
{ unsigned long flags; local_irq_save(flags); __mod_zone_page_state(zone, item, delta); local_irq_restore(flags); } EXPORT_SYMBOL(mod_zone_page_state); |
2244b95a7 [PATCH] zoned vm ... |
590 591 592 593 |
void inc_zone_page_state(struct page *page, enum zone_stat_item item) { unsigned long flags; struct zone *zone; |
2244b95a7 [PATCH] zoned vm ... |
594 595 596 |
zone = page_zone(page); local_irq_save(flags); |
ca889e6c4 [PATCH] Use Zoned... |
597 |
__inc_zone_state(zone, item); |
2244b95a7 [PATCH] zoned vm ... |
598 599 600 601 602 603 604 |
local_irq_restore(flags); } EXPORT_SYMBOL(inc_zone_page_state); void dec_zone_page_state(struct page *page, enum zone_stat_item item) { unsigned long flags; |
2244b95a7 [PATCH] zoned vm ... |
605 |
|
2244b95a7 [PATCH] zoned vm ... |
606 |
local_irq_save(flags); |
a302eb4e4 [PATCH] ZVC: Over... |
607 |
__dec_zone_page_state(page, item); |
2244b95a7 [PATCH] zoned vm ... |
608 609 610 |
local_irq_restore(flags); } EXPORT_SYMBOL(dec_zone_page_state); |
75ef71840 mm, vmstat: add i... |
611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 |
void inc_node_state(struct pglist_data *pgdat, enum node_stat_item item) { unsigned long flags; local_irq_save(flags); __inc_node_state(pgdat, item); local_irq_restore(flags); } EXPORT_SYMBOL(inc_node_state); void mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item, long delta) { unsigned long flags; local_irq_save(flags); __mod_node_page_state(pgdat, item, delta); local_irq_restore(flags); } EXPORT_SYMBOL(mod_node_page_state); void inc_node_page_state(struct page *page, enum node_stat_item item) { unsigned long flags; struct pglist_data *pgdat; pgdat = page_pgdat(page); local_irq_save(flags); __inc_node_state(pgdat, item); local_irq_restore(flags); } EXPORT_SYMBOL(inc_node_page_state); void dec_node_page_state(struct page *page, enum node_stat_item item) { unsigned long flags; local_irq_save(flags); __dec_node_page_state(page, item); local_irq_restore(flags); } EXPORT_SYMBOL(dec_node_page_state); #endif |
7cc36bbdd vmstat: on-demand... |
654 655 656 657 658 |
/* * Fold a differential into the global counters. * Returns the number of counters updated. */ |
3a321d2a3 mm: change the ca... |
659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 |
#ifdef CONFIG_NUMA static int fold_diff(int *zone_diff, int *numa_diff, int *node_diff) { int i; int changes = 0; for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) if (zone_diff[i]) { atomic_long_add(zone_diff[i], &vm_zone_stat[i]); changes++; } for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) if (numa_diff[i]) { atomic_long_add(numa_diff[i], &vm_numa_stat[i]); changes++; } for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) if (node_diff[i]) { atomic_long_add(node_diff[i], &vm_node_stat[i]); changes++; } return changes; } #else |
75ef71840 mm, vmstat: add i... |
685 |
static int fold_diff(int *zone_diff, int *node_diff) |
4edb0748b vmstat: create fo... |
686 687 |
{ int i; |
7cc36bbdd vmstat: on-demand... |
688 |
int changes = 0; |
4edb0748b vmstat: create fo... |
689 690 |
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) |
75ef71840 mm, vmstat: add i... |
691 692 693 694 695 696 697 698 |
if (zone_diff[i]) { atomic_long_add(zone_diff[i], &vm_zone_stat[i]); changes++; } for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) if (node_diff[i]) { atomic_long_add(node_diff[i], &vm_node_stat[i]); |
7cc36bbdd vmstat: on-demand... |
699 700 701 |
changes++; } return changes; |
4edb0748b vmstat: create fo... |
702 |
} |
3a321d2a3 mm: change the ca... |
703 |
#endif /* CONFIG_NUMA */ |
4edb0748b vmstat: create fo... |
704 |
|
2244b95a7 [PATCH] zoned vm ... |
705 |
/* |
2bb921e52 vmstat: create se... |
706 |
* Update the zone counters for the current cpu. |
a7f75e258 vmstat: small rev... |
707 |
* |
4037d4522 Move remote node ... |
708 709 710 711 712 713 714 715 716 717 |
* Note that refresh_cpu_vm_stats strives to only access * node local memory. The per cpu pagesets on remote zones are placed * in the memory local to the processor using that pageset. So the * loop over all zones will access a series of cachelines local to * the processor. * * The call to zone_page_state_add updates the cachelines with the * statistics in the remote zone struct as well as the global cachelines * with the global counters. These could cause remote node cache line * bouncing and will have to be only done when necessary. |
7cc36bbdd vmstat: on-demand... |
718 719 |
* * The function returns the number of global counters updated. |
2244b95a7 [PATCH] zoned vm ... |
720 |
*/ |
0eb77e988 vmstat: make vmst... |
721 |
static int refresh_cpu_vm_stats(bool do_pagesets) |
2244b95a7 [PATCH] zoned vm ... |
722 |
{ |
75ef71840 mm, vmstat: add i... |
723 |
struct pglist_data *pgdat; |
2244b95a7 [PATCH] zoned vm ... |
724 725 |
struct zone *zone; int i; |
75ef71840 mm, vmstat: add i... |
726 |
int global_zone_diff[NR_VM_ZONE_STAT_ITEMS] = { 0, }; |
3a321d2a3 mm: change the ca... |
727 728 729 |
#ifdef CONFIG_NUMA int global_numa_diff[NR_VM_NUMA_STAT_ITEMS] = { 0, }; #endif |
75ef71840 mm, vmstat: add i... |
730 |
int global_node_diff[NR_VM_NODE_STAT_ITEMS] = { 0, }; |
7cc36bbdd vmstat: on-demand... |
731 |
int changes = 0; |
2244b95a7 [PATCH] zoned vm ... |
732 |
|
ee99c71c5 mm: introduce for... |
733 |
for_each_populated_zone(zone) { |
fbc2edb05 vmstat: use this_... |
734 |
struct per_cpu_pageset __percpu *p = zone->pageset; |
2244b95a7 [PATCH] zoned vm ... |
735 |
|
fbc2edb05 vmstat: use this_... |
736 737 |
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) { int v; |
2244b95a7 [PATCH] zoned vm ... |
738 |
|
fbc2edb05 vmstat: use this_... |
739 740 |
v = this_cpu_xchg(p->vm_stat_diff[i], 0); if (v) { |
a7f75e258 vmstat: small rev... |
741 |
|
a7f75e258 vmstat: small rev... |
742 |
atomic_long_add(v, &zone->vm_stat[i]); |
75ef71840 mm, vmstat: add i... |
743 |
global_zone_diff[i] += v; |
4037d4522 Move remote node ... |
744 745 |
#ifdef CONFIG_NUMA /* 3 seconds idle till flush */ |
fbc2edb05 vmstat: use this_... |
746 |
__this_cpu_write(p->expire, 3); |
4037d4522 Move remote node ... |
747 |
#endif |
2244b95a7 [PATCH] zoned vm ... |
748 |
} |
fbc2edb05 vmstat: use this_... |
749 |
} |
4037d4522 Move remote node ... |
750 |
#ifdef CONFIG_NUMA |
3a321d2a3 mm: change the ca... |
751 752 753 754 755 756 757 758 759 760 761 |
for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) { int v; v = this_cpu_xchg(p->vm_numa_stat_diff[i], 0); if (v) { atomic_long_add(v, &zone->vm_numa_stat[i]); global_numa_diff[i] += v; __this_cpu_write(p->expire, 3); } } |
0eb77e988 vmstat: make vmst... |
762 763 764 765 766 767 768 769 770 771 |
if (do_pagesets) { cond_resched(); /* * Deal with draining the remote pageset of this * processor * * Check if there are pages remaining in this pageset * if not then there is nothing to expire. */ if (!__this_cpu_read(p->expire) || |
fbc2edb05 vmstat: use this_... |
772 |
!__this_cpu_read(p->pcp.count)) |
0eb77e988 vmstat: make vmst... |
773 |
continue; |
4037d4522 Move remote node ... |
774 |
|
0eb77e988 vmstat: make vmst... |
775 776 777 778 779 780 781 |
/* * We never drain zones local to this processor. */ if (zone_to_nid(zone) == numa_node_id()) { __this_cpu_write(p->expire, 0); continue; } |
4037d4522 Move remote node ... |
782 |
|
0eb77e988 vmstat: make vmst... |
783 784 |
if (__this_cpu_dec_return(p->expire)) continue; |
4037d4522 Move remote node ... |
785 |
|
0eb77e988 vmstat: make vmst... |
786 787 788 789 |
if (__this_cpu_read(p->pcp.count)) { drain_zone_pages(zone, this_cpu_ptr(&p->pcp)); changes++; } |
7cc36bbdd vmstat: on-demand... |
790 |
} |
4037d4522 Move remote node ... |
791 |
#endif |
2244b95a7 [PATCH] zoned vm ... |
792 |
} |
75ef71840 mm, vmstat: add i... |
793 794 795 796 797 798 799 800 801 802 803 804 805 806 |
for_each_online_pgdat(pgdat) { struct per_cpu_nodestat __percpu *p = pgdat->per_cpu_nodestats; for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { int v; v = this_cpu_xchg(p->vm_node_stat_diff[i], 0); if (v) { atomic_long_add(v, &pgdat->vm_stat[i]); global_node_diff[i] += v; } } } |
3a321d2a3 mm: change the ca... |
807 808 809 810 |
#ifdef CONFIG_NUMA changes += fold_diff(global_zone_diff, global_numa_diff, global_node_diff); #else |
75ef71840 mm, vmstat: add i... |
811 |
changes += fold_diff(global_zone_diff, global_node_diff); |
3a321d2a3 mm: change the ca... |
812 |
#endif |
7cc36bbdd vmstat: on-demand... |
813 |
return changes; |
2244b95a7 [PATCH] zoned vm ... |
814 |
} |
40f4b1ead mm/vmstat: add no... |
815 |
/* |
2bb921e52 vmstat: create se... |
816 817 818 819 820 821 |
* Fold the data for an offline cpu into the global array. * There cannot be any access by the offline cpu and therefore * synchronization is simplified. */ void cpu_vm_stats_fold(int cpu) { |
75ef71840 mm, vmstat: add i... |
822 |
struct pglist_data *pgdat; |
2bb921e52 vmstat: create se... |
823 824 |
struct zone *zone; int i; |
75ef71840 mm, vmstat: add i... |
825 |
int global_zone_diff[NR_VM_ZONE_STAT_ITEMS] = { 0, }; |
3a321d2a3 mm: change the ca... |
826 827 828 |
#ifdef CONFIG_NUMA int global_numa_diff[NR_VM_NUMA_STAT_ITEMS] = { 0, }; #endif |
75ef71840 mm, vmstat: add i... |
829 |
int global_node_diff[NR_VM_NODE_STAT_ITEMS] = { 0, }; |
2bb921e52 vmstat: create se... |
830 831 832 833 834 835 836 837 838 839 840 841 842 |
for_each_populated_zone(zone) { struct per_cpu_pageset *p; p = per_cpu_ptr(zone->pageset, cpu); for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) if (p->vm_stat_diff[i]) { int v; v = p->vm_stat_diff[i]; p->vm_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_stat[i]); |
75ef71840 mm, vmstat: add i... |
843 |
global_zone_diff[i] += v; |
2bb921e52 vmstat: create se... |
844 |
} |
3a321d2a3 mm: change the ca... |
845 846 847 848 849 850 851 852 853 854 855 856 |
#ifdef CONFIG_NUMA for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) if (p->vm_numa_stat_diff[i]) { int v; v = p->vm_numa_stat_diff[i]; p->vm_numa_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_numa_stat[i]); global_numa_diff[i] += v; } #endif |
2bb921e52 vmstat: create se... |
857 |
} |
75ef71840 mm, vmstat: add i... |
858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 |
for_each_online_pgdat(pgdat) { struct per_cpu_nodestat *p; p = per_cpu_ptr(pgdat->per_cpu_nodestats, cpu); for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) if (p->vm_node_stat_diff[i]) { int v; v = p->vm_node_stat_diff[i]; p->vm_node_stat_diff[i] = 0; atomic_long_add(v, &pgdat->vm_stat[i]); global_node_diff[i] += v; } } |
3a321d2a3 mm: change the ca... |
873 874 875 |
#ifdef CONFIG_NUMA fold_diff(global_zone_diff, global_numa_diff, global_node_diff); #else |
75ef71840 mm, vmstat: add i... |
876 |
fold_diff(global_zone_diff, global_node_diff); |
3a321d2a3 mm: change the ca... |
877 |
#endif |
2bb921e52 vmstat: create se... |
878 879 880 |
} /* |
40f4b1ead mm/vmstat: add no... |
881 882 883 |
* this is only called if !populated_zone(zone), which implies no other users of * pset->vm_stat_diff[] exsist. */ |
5a8838138 memory-hotplug: f... |
884 885 886 887 888 889 890 891 892 |
void drain_zonestat(struct zone *zone, struct per_cpu_pageset *pset) { int i; for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) if (pset->vm_stat_diff[i]) { int v = pset->vm_stat_diff[i]; pset->vm_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_stat[i]); |
75ef71840 mm, vmstat: add i... |
893 |
atomic_long_add(v, &vm_zone_stat[i]); |
5a8838138 memory-hotplug: f... |
894 |
} |
3a321d2a3 mm: change the ca... |
895 896 897 898 899 900 901 902 903 904 905 |
#ifdef CONFIG_NUMA for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) if (pset->vm_numa_stat_diff[i]) { int v = pset->vm_numa_stat_diff[i]; pset->vm_numa_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_numa_stat[i]); atomic_long_add(v, &vm_numa_stat[i]); } #endif |
5a8838138 memory-hotplug: f... |
906 |
} |
2244b95a7 [PATCH] zoned vm ... |
907 |
#endif |
ca889e6c4 [PATCH] Use Zoned... |
908 |
#ifdef CONFIG_NUMA |
3a321d2a3 mm: change the ca... |
909 910 911 912 |
void __inc_numa_state(struct zone *zone, enum numa_stat_item item) { struct per_cpu_pageset __percpu *pcp = zone->pageset; |
1d90ca897 mm: update NUMA c... |
913 914 |
u16 __percpu *p = pcp->vm_numa_stat_diff + item; u16 v; |
3a321d2a3 mm: change the ca... |
915 916 |
v = __this_cpu_inc_return(*p); |
3a321d2a3 mm: change the ca... |
917 |
|
1d90ca897 mm: update NUMA c... |
918 919 920 |
if (unlikely(v > NUMA_STATS_THRESHOLD)) { zone_numa_state_add(v, zone, item); __this_cpu_write(*p, 0); |
3a321d2a3 mm: change the ca... |
921 922 |
} } |
ca889e6c4 [PATCH] Use Zoned... |
923 |
/* |
75ef71840 mm, vmstat: add i... |
924 925 926 |
* Determine the per node value of a stat item. This function * is called frequently in a NUMA machine, so try to be as * frugal as possible. |
c2d42c16a mm/vmstat.c: unin... |
927 |
*/ |
75ef71840 mm, vmstat: add i... |
928 929 |
unsigned long sum_zone_node_page_state(int node, enum zone_stat_item item) |
c2d42c16a mm/vmstat.c: unin... |
930 931 |
{ struct zone *zones = NODE_DATA(node)->node_zones; |
e87d59f7a mm/vmstat: make n... |
932 933 |
int i; unsigned long count = 0; |
c2d42c16a mm/vmstat.c: unin... |
934 |
|
e87d59f7a mm/vmstat: make n... |
935 936 937 938 |
for (i = 0; i < MAX_NR_ZONES; i++) count += zone_page_state(zones + i, item); return count; |
c2d42c16a mm/vmstat.c: unin... |
939 |
} |
638032224 mm: consider the ... |
940 941 942 943 |
/* * Determine the per node value of a numa stat item. To avoid deviation, * the per cpu stat number in vm_numa_stat_diff[] is also included. */ |
3a321d2a3 mm: change the ca... |
944 945 946 947 948 949 950 951 |
unsigned long sum_zone_numa_state(int node, enum numa_stat_item item) { struct zone *zones = NODE_DATA(node)->node_zones; int i; unsigned long count = 0; for (i = 0; i < MAX_NR_ZONES; i++) |
638032224 mm: consider the ... |
952 |
count += zone_numa_state_snapshot(zones + i, item); |
3a321d2a3 mm: change the ca... |
953 954 955 |
return count; } |
75ef71840 mm, vmstat: add i... |
956 957 958 |
/* * Determine the per node value of a stat item. */ |
ea426c2a7 mm: memcg: prepar... |
959 960 |
unsigned long node_page_state_pages(struct pglist_data *pgdat, enum node_stat_item item) |
75ef71840 mm, vmstat: add i... |
961 962 963 964 965 966 967 968 |
{ long x = atomic_long_read(&pgdat->vm_stat[item]); #ifdef CONFIG_SMP if (x < 0) x = 0; #endif return x; } |
ea426c2a7 mm: memcg: prepar... |
969 970 971 972 973 974 975 976 |
unsigned long node_page_state(struct pglist_data *pgdat, enum node_stat_item item) { VM_WARN_ON_ONCE(vmstat_item_in_bytes(item)); return node_page_state_pages(pgdat, item); } |
ca889e6c4 [PATCH] Use Zoned... |
977 |
#endif |
d7a5752c0 mm: export unusab... |
978 |
#ifdef CONFIG_COMPACTION |
36deb0be3 vmstat: include c... |
979 |
|
d7a5752c0 mm: export unusab... |
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 |
struct contig_page_info { unsigned long free_pages; unsigned long free_blocks_total; unsigned long free_blocks_suitable; }; /* * Calculate the number of free pages in a zone, how many contiguous * pages are free and how many are large enough to satisfy an allocation of * the target size. Note that this function makes no attempt to estimate * how many suitable free blocks there *might* be if MOVABLE pages were * migrated. Calculating that is possible, but expensive and can be * figured out from userspace */ static void fill_contig_page_info(struct zone *zone, unsigned int suitable_order, struct contig_page_info *info) { unsigned int order; info->free_pages = 0; info->free_blocks_total = 0; info->free_blocks_suitable = 0; for (order = 0; order < MAX_ORDER; order++) { unsigned long blocks; /* Count number of free blocks */ blocks = zone->free_area[order].nr_free; info->free_blocks_total += blocks; /* Count free base pages */ info->free_pages += blocks << order; /* Count the suitable free blocks */ if (order >= suitable_order) info->free_blocks_suitable += blocks << (order - suitable_order); } } |
f1a5ab121 mm: export fragme... |
1020 1021 1022 1023 1024 1025 1026 1027 |
/* * A fragmentation index only makes sense if an allocation of a requested * size would fail. If that is true, the fragmentation index indicates * whether external fragmentation or a lack of memory was the problem. * The value can be used to determine if page reclaim or compaction * should be used */ |
56de7263f mm: compaction: d... |
1028 |
static int __fragmentation_index(unsigned int order, struct contig_page_info *info) |
f1a5ab121 mm: export fragme... |
1029 1030 |
{ unsigned long requested = 1UL << order; |
88d6ac40c mm/vmstat: fix di... |
1031 1032 |
if (WARN_ON_ONCE(order >= MAX_ORDER)) return 0; |
f1a5ab121 mm: export fragme... |
1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 |
if (!info->free_blocks_total) return 0; /* Fragmentation index only makes sense when a request would fail */ if (info->free_blocks_suitable) return -1000; /* * Index is between 0 and 1 so return within 3 decimal places * * 0 => allocation would fail due to lack of memory * 1 => allocation would fail due to fragmentation */ return 1000 - div_u64( (1000+(div_u64(info->free_pages * 1000ULL, requested))), info->free_blocks_total); } |
56de7263f mm: compaction: d... |
1048 |
|
facdaa917 mm: proactive com... |
1049 1050 1051 1052 1053 |
/* * Calculates external fragmentation within a zone wrt the given order. * It is defined as the percentage of pages found in blocks of size * less than 1 << order. It returns values in range [0, 100]. */ |
d34c0a759 mm: use unsigned ... |
1054 |
unsigned int extfrag_for_order(struct zone *zone, unsigned int order) |
facdaa917 mm: proactive com... |
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 |
{ struct contig_page_info info; fill_contig_page_info(zone, order, &info); if (info.free_pages == 0) return 0; return div_u64((info.free_pages - (info.free_blocks_suitable << order)) * 100, info.free_pages); } |
56de7263f mm: compaction: d... |
1066 1067 1068 1069 1070 1071 1072 1073 |
/* Same as __fragmentation index but allocs contig_page_info on stack */ int fragmentation_index(struct zone *zone, unsigned int order) { struct contig_page_info info; fill_contig_page_info(zone, order, &info); return __fragmentation_index(order, &info); } |
d7a5752c0 mm: export unusab... |
1074 |
#endif |
ebc5d83d0 mm/memcontrol: us... |
1075 1076 |
#if defined(CONFIG_PROC_FS) || defined(CONFIG_SYSFS) || \ defined(CONFIG_NUMA) || defined(CONFIG_MEMCG) |
fa25c503d mm: per-node vmst... |
1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 |
#ifdef CONFIG_ZONE_DMA #define TEXT_FOR_DMA(xx) xx "_dma", #else #define TEXT_FOR_DMA(xx) #endif #ifdef CONFIG_ZONE_DMA32 #define TEXT_FOR_DMA32(xx) xx "_dma32", #else #define TEXT_FOR_DMA32(xx) #endif #ifdef CONFIG_HIGHMEM #define TEXT_FOR_HIGHMEM(xx) xx "_high", #else #define TEXT_FOR_HIGHMEM(xx) #endif #define TEXTS_FOR_ZONES(xx) TEXT_FOR_DMA(xx) TEXT_FOR_DMA32(xx) xx "_normal", \ TEXT_FOR_HIGHMEM(xx) xx "_movable", const char * const vmstat_text[] = { |
8d92890bd mm/writeback: dis... |
1099 |
/* enum zone_stat_item counters */ |
fa25c503d mm: per-node vmst... |
1100 |
"nr_free_pages", |
71c799f49 mm: add per-zone ... |
1101 1102 1103 1104 1105 |
"nr_zone_inactive_anon", "nr_zone_active_anon", "nr_zone_inactive_file", "nr_zone_active_file", "nr_zone_unevictable", |
5a1c84b40 mm: remove reclai... |
1106 |
"nr_zone_write_pending", |
fa25c503d mm: per-node vmst... |
1107 |
"nr_mlock", |
fa25c503d mm: per-node vmst... |
1108 |
"nr_page_table_pages", |
fa25c503d mm: per-node vmst... |
1109 |
"nr_bounce", |
91537fee0 mm: add NR_ZSMALL... |
1110 |
"nr_zspages", |
3a321d2a3 mm: change the ca... |
1111 1112 1113 |
"nr_free_cma", /* enum numa_stat_item counters */ |
fa25c503d mm: per-node vmst... |
1114 1115 1116 1117 1118 1119 1120 1121 |
#ifdef CONFIG_NUMA "numa_hit", "numa_miss", "numa_foreign", "numa_interleave", "numa_local", "numa_other", #endif |
09316c09d mm/balloon_compac... |
1122 |
|
9d7ea9a29 mm/vmstat: add he... |
1123 |
/* enum node_stat_item counters */ |
599d0c954 mm, vmscan: move ... |
1124 1125 1126 1127 1128 |
"nr_inactive_anon", "nr_active_anon", "nr_inactive_file", "nr_active_file", "nr_unevictable", |
385386cff mm: vmstat: move ... |
1129 1130 |
"nr_slab_reclaimable", "nr_slab_unreclaimable", |
599d0c954 mm, vmscan: move ... |
1131 1132 |
"nr_isolated_anon", "nr_isolated_file", |
68d48e6a2 mm: workingset: a... |
1133 |
"workingset_nodes", |
170b04b7a mm/workingset: pr... |
1134 1135 1136 1137 1138 1139 |
"workingset_refault_anon", "workingset_refault_file", "workingset_activate_anon", "workingset_activate_file", "workingset_restore_anon", "workingset_restore_file", |
1e6b10857 mm, workingset: m... |
1140 |
"workingset_nodereclaim", |
50658e2e0 mm: move page map... |
1141 1142 |
"nr_anon_pages", "nr_mapped", |
11fb99898 mm: move most fil... |
1143 1144 1145 1146 1147 1148 1149 |
"nr_file_pages", "nr_dirty", "nr_writeback", "nr_writeback_temp", "nr_shmem", "nr_shmem_hugepages", "nr_shmem_pmdmapped", |
60fbf0ab5 mm,thp: stats for... |
1150 1151 |
"nr_file_hugepages", "nr_file_pmdmapped", |
11fb99898 mm: move most fil... |
1152 |
"nr_anon_transparent_hugepages", |
c4a25635b mm: move vmscan w... |
1153 1154 1155 1156 |
"nr_vmscan_write", "nr_vmscan_immediate_reclaim", "nr_dirtied", "nr_written", |
b29940c1a mm: rename and ch... |
1157 |
"nr_kernel_misc_reclaimable", |
1970dc6f5 mm/gup: /proc/vms... |
1158 1159 |
"nr_foll_pin_acquired", "nr_foll_pin_released", |
991e76738 mm: memcontrol: a... |
1160 1161 1162 1163 |
"nr_kernel_stack", #if IS_ENABLED(CONFIG_SHADOW_CALL_STACK) "nr_shadow_call_stack", #endif |
599d0c954 mm, vmscan: move ... |
1164 |
|
09316c09d mm/balloon_compac... |
1165 |
/* enum writeback_stat_item counters */ |
fa25c503d mm: per-node vmst... |
1166 1167 |
"nr_dirty_threshold", "nr_dirty_background_threshold", |
ebc5d83d0 mm/memcontrol: us... |
1168 |
#if defined(CONFIG_VM_EVENT_COUNTERS) || defined(CONFIG_MEMCG) |
09316c09d mm/balloon_compac... |
1169 |
/* enum vm_event_item counters */ |
fa25c503d mm: per-node vmst... |
1170 1171 1172 1173 1174 1175 |
"pgpgin", "pgpgout", "pswpin", "pswpout", TEXTS_FOR_ZONES("pgalloc") |
7cc30fcfd mm: vmstat: accou... |
1176 1177 |
TEXTS_FOR_ZONES("allocstall") TEXTS_FOR_ZONES("pgskip") |
fa25c503d mm: per-node vmst... |
1178 1179 1180 1181 |
"pgfree", "pgactivate", "pgdeactivate", |
f7ad2a6cb mm: move MADV_FRE... |
1182 |
"pglazyfree", |
fa25c503d mm: per-node vmst... |
1183 1184 1185 |
"pgfault", "pgmajfault", |
854e9ed09 mm: support madvi... |
1186 |
"pglazyfreed", |
fa25c503d mm: per-node vmst... |
1187 |
|
599d0c954 mm, vmscan: move ... |
1188 |
"pgrefill", |
798a6b87e mm: Add PGREUSE c... |
1189 |
"pgreuse", |
599d0c954 mm, vmscan: move ... |
1190 1191 1192 1193 |
"pgsteal_kswapd", "pgsteal_direct", "pgscan_kswapd", "pgscan_direct", |
68243e76e mm: account for t... |
1194 |
"pgscan_direct_throttle", |
497a6c1b0 mm: keep separate... |
1195 1196 1197 1198 |
"pgscan_anon", "pgscan_file", "pgsteal_anon", "pgsteal_file", |
fa25c503d mm: per-node vmst... |
1199 1200 1201 1202 1203 1204 |
#ifdef CONFIG_NUMA "zone_reclaim_failed", #endif "pginodesteal", "slabs_scanned", |
fa25c503d mm: per-node vmst... |
1205 1206 1207 |
"kswapd_inodesteal", "kswapd_low_wmark_hit_quickly", "kswapd_high_wmark_hit_quickly", |
fa25c503d mm: per-node vmst... |
1208 |
"pageoutrun", |
fa25c503d mm: per-node vmst... |
1209 1210 |
"pgrotated", |
5509a5d27 drop_caches: add ... |
1211 1212 |
"drop_pagecache", "drop_slab", |
8e675f7af mm/oom_kill: coun... |
1213 |
"oom_kill", |
5509a5d27 drop_caches: add ... |
1214 |
|
03c5a6e16 mm: numa: Add pte... |
1215 1216 |
#ifdef CONFIG_NUMA_BALANCING "numa_pte_updates", |
72403b4a0 mm: numa: return ... |
1217 |
"numa_huge_pte_updates", |
03c5a6e16 mm: numa: Add pte... |
1218 1219 1220 1221 |
"numa_hint_faults", "numa_hint_faults_local", "numa_pages_migrated", #endif |
5647bc293 mm: compaction: M... |
1222 1223 1224 |
#ifdef CONFIG_MIGRATION "pgmigrate_success", "pgmigrate_fail", |
1a5bae25e mm/vmstat: add ev... |
1225 1226 1227 |
"thp_migration_success", "thp_migration_fail", "thp_migration_split", |
5647bc293 mm: compaction: M... |
1228 |
#endif |
fa25c503d mm: per-node vmst... |
1229 |
#ifdef CONFIG_COMPACTION |
397487db6 mm: compaction: A... |
1230 1231 1232 |
"compact_migrate_scanned", "compact_free_scanned", "compact_isolated", |
fa25c503d mm: per-node vmst... |
1233 1234 1235 |
"compact_stall", "compact_fail", "compact_success", |
698b1b306 mm, compaction: i... |
1236 |
"compact_daemon_wake", |
7f354a548 mm, compaction: a... |
1237 1238 |
"compact_daemon_migrate_scanned", "compact_daemon_free_scanned", |
fa25c503d mm: per-node vmst... |
1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 |
#endif #ifdef CONFIG_HUGETLB_PAGE "htlb_buddy_alloc_success", "htlb_buddy_alloc_fail", #endif "unevictable_pgs_culled", "unevictable_pgs_scanned", "unevictable_pgs_rescued", "unevictable_pgs_mlocked", "unevictable_pgs_munlocked", "unevictable_pgs_cleared", "unevictable_pgs_stranded", |
fa25c503d mm: per-node vmst... |
1252 1253 1254 1255 |
#ifdef CONFIG_TRANSPARENT_HUGEPAGE "thp_fault_alloc", "thp_fault_fallback", |
85b9f46e8 mm, thp: track fa... |
1256 |
"thp_fault_fallback_charge", |
fa25c503d mm: per-node vmst... |
1257 1258 |
"thp_collapse_alloc", "thp_collapse_alloc_failed", |
95ecedcd6 thp, vmstats: add... |
1259 |
"thp_file_alloc", |
dcdf11ee1 mm, shmem: add vm... |
1260 |
"thp_file_fallback", |
85b9f46e8 mm, thp: track fa... |
1261 |
"thp_file_fallback_charge", |
95ecedcd6 thp, vmstats: add... |
1262 |
"thp_file_mapped", |
122afea96 mm, vmstats: new ... |
1263 1264 |
"thp_split_page", "thp_split_page_failed", |
f9719a03d thp, vmstats: cou... |
1265 |
"thp_deferred_split_page", |
122afea96 mm, vmstats: new ... |
1266 |
"thp_split_pmd", |
ce9311cf9 mm/vmstats: add t... |
1267 1268 1269 |
#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD "thp_split_pud", #endif |
d8a8e1f0d thp, vmstat: impl... |
1270 1271 |
"thp_zero_page_alloc", "thp_zero_page_alloc_failed", |
225311a46 mm: test code to ... |
1272 |
"thp_swpout", |
fe490cc0f mm, THP, swap: ad... |
1273 |
"thp_swpout_fallback", |
fa25c503d mm: per-node vmst... |
1274 |
#endif |
09316c09d mm/balloon_compac... |
1275 1276 1277 1278 1279 1280 1281 |
#ifdef CONFIG_MEMORY_BALLOON "balloon_inflate", "balloon_deflate", #ifdef CONFIG_BALLOON_COMPACTION "balloon_migrate", #endif #endif /* CONFIG_MEMORY_BALLOON */ |
ec6599344 mm, x86: Account ... |
1282 |
#ifdef CONFIG_DEBUG_TLBFLUSH |
9824cf975 mm: vmstats: tlb ... |
1283 1284 1285 1286 |
"nr_tlb_remote_flush", "nr_tlb_remote_flush_received", "nr_tlb_local_flush_all", "nr_tlb_local_flush_one", |
ec6599344 mm, x86: Account ... |
1287 |
#endif /* CONFIG_DEBUG_TLBFLUSH */ |
fa25c503d mm: per-node vmst... |
1288 |
|
4f115147f mm,vmacache: add ... |
1289 1290 1291 1292 |
#ifdef CONFIG_DEBUG_VM_VMACACHE "vmacache_find_calls", "vmacache_find_hits", #endif |
cbc65df24 mm, swap: add swa... |
1293 1294 1295 1296 |
#ifdef CONFIG_SWAP "swap_ra", "swap_ra_hit", #endif |
ebc5d83d0 mm/memcontrol: us... |
1297 |
#endif /* CONFIG_VM_EVENT_COUNTERS || CONFIG_MEMCG */ |
fa25c503d mm: per-node vmst... |
1298 |
}; |
ebc5d83d0 mm/memcontrol: us... |
1299 |
#endif /* CONFIG_PROC_FS || CONFIG_SYSFS || CONFIG_NUMA || CONFIG_MEMCG */ |
fa25c503d mm: per-node vmst... |
1300 |
|
3c4868710 mm/vmstat.c: fix/... |
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 |
#if (defined(CONFIG_DEBUG_FS) && defined(CONFIG_COMPACTION)) || \ defined(CONFIG_PROC_FS) static void *frag_start(struct seq_file *m, loff_t *pos) { pg_data_t *pgdat; loff_t node = *pos; for (pgdat = first_online_pgdat(); pgdat && node; pgdat = next_online_pgdat(pgdat)) --node; return pgdat; } static void *frag_next(struct seq_file *m, void *arg, loff_t *pos) { pg_data_t *pgdat = (pg_data_t *)arg; (*pos)++; return next_online_pgdat(pgdat); } static void frag_stop(struct seq_file *m, void *arg) { } |
b2bd85981 mm, vmstat: print... |
1327 1328 1329 1330 |
/* * Walk zones in a node and print using a callback. * If @assert_populated is true, only use callback for zones that are populated. */ |
3c4868710 mm/vmstat.c: fix/... |
1331 |
static void walk_zones_in_node(struct seq_file *m, pg_data_t *pgdat, |
727c080f0 mm: avoid taking ... |
1332 |
bool assert_populated, bool nolock, |
3c4868710 mm/vmstat.c: fix/... |
1333 1334 1335 1336 1337 1338 1339 |
void (*print)(struct seq_file *m, pg_data_t *, struct zone *)) { struct zone *zone; struct zone *node_zones = pgdat->node_zones; unsigned long flags; for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) { |
b2bd85981 mm, vmstat: print... |
1340 |
if (assert_populated && !populated_zone(zone)) |
3c4868710 mm/vmstat.c: fix/... |
1341 |
continue; |
727c080f0 mm: avoid taking ... |
1342 1343 |
if (!nolock) spin_lock_irqsave(&zone->lock, flags); |
3c4868710 mm/vmstat.c: fix/... |
1344 |
print(m, pgdat, zone); |
727c080f0 mm: avoid taking ... |
1345 1346 |
if (!nolock) spin_unlock_irqrestore(&zone->lock, flags); |
3c4868710 mm/vmstat.c: fix/... |
1347 1348 1349 |
} } #endif |
d7a5752c0 mm: export unusab... |
1350 |
#ifdef CONFIG_PROC_FS |
467c996c1 Print out statist... |
1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 |
static void frag_show_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone) { int order; seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name); for (order = 0; order < MAX_ORDER; ++order) seq_printf(m, "%6lu ", zone->free_area[order].nr_free); seq_putc(m, ' '); } /* * This walks the free areas for each zone. */ static int frag_show(struct seq_file *m, void *arg) { pg_data_t *pgdat = (pg_data_t *)arg; |
727c080f0 mm: avoid taking ... |
1369 |
walk_zones_in_node(m, pgdat, true, false, frag_show_print); |
467c996c1 Print out statist... |
1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 |
return 0; } static void pagetypeinfo_showfree_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone) { int order, mtype; for (mtype = 0; mtype < MIGRATE_TYPES; mtype++) { seq_printf(m, "Node %4d, zone %8s, type %12s ", pgdat->node_id, zone->name, migratetype_names[mtype]); for (order = 0; order < MAX_ORDER; ++order) { unsigned long freecount = 0; struct free_area *area; struct list_head *curr; |
93b3a6744 mm, vmstat: reduc... |
1387 |
bool overflow = false; |
467c996c1 Print out statist... |
1388 1389 |
area = &(zone->free_area[order]); |
93b3a6744 mm, vmstat: reduc... |
1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 |
list_for_each(curr, &area->free_list[mtype]) { /* * Cap the free_list iteration because it might * be really large and we are under a spinlock * so a long time spent here could trigger a * hard lockup detector. Anyway this is a * debugging tool so knowing there is a handful * of pages of this order should be more than * sufficient. */ if (++freecount >= 100000) { overflow = true; break; } } seq_printf(m, "%s%6lu ", overflow ? ">" : "", freecount); spin_unlock_irq(&zone->lock); cond_resched(); spin_lock_irq(&zone->lock); |
467c996c1 Print out statist... |
1409 |
} |
f6ac2354d [PATCH] zoned vm ... |
1410 1411 1412 |
seq_putc(m, ' '); } |
467c996c1 Print out statist... |
1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 |
} /* Print out the free pages at each order for each migatetype */ static int pagetypeinfo_showfree(struct seq_file *m, void *arg) { int order; pg_data_t *pgdat = (pg_data_t *)arg; /* Print header */ seq_printf(m, "%-43s ", "Free pages count per migrate type at order"); for (order = 0; order < MAX_ORDER; ++order) seq_printf(m, "%6d ", order); seq_putc(m, ' '); |
727c080f0 mm: avoid taking ... |
1427 |
walk_zones_in_node(m, pgdat, true, false, pagetypeinfo_showfree_print); |
467c996c1 Print out statist... |
1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 |
return 0; } static void pagetypeinfo_showblockcount_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone) { int mtype; unsigned long pfn; unsigned long start_pfn = zone->zone_start_pfn; |
108bcc96e mm: add & use zon... |
1438 |
unsigned long end_pfn = zone_end_pfn(zone); |
467c996c1 Print out statist... |
1439 1440 1441 1442 |
unsigned long count[MIGRATE_TYPES] = { 0, }; for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) { struct page *page; |
d336e94e4 mm, vmstat: skip ... |
1443 1444 |
page = pfn_to_online_page(pfn); if (!page) |
467c996c1 Print out statist... |
1445 |
continue; |
eb33575cf [ARM] Double chec... |
1446 1447 |
/* Watch for unexpected holes punched in the memmap */ if (!memmap_valid_within(pfn, page, zone)) |
e80d6a248 [ARM] Skip memory... |
1448 |
continue; |
eb33575cf [ARM] Double chec... |
1449 |
|
a91c43c73 mm/vmstat: add zo... |
1450 1451 |
if (page_zone(page) != zone) continue; |
467c996c1 Print out statist... |
1452 |
mtype = get_pageblock_migratetype(page); |
e80d6a248 [ARM] Skip memory... |
1453 1454 |
if (mtype < MIGRATE_TYPES) count[mtype]++; |
467c996c1 Print out statist... |
1455 1456 1457 1458 1459 1460 1461 1462 1463 |
} /* Print counts */ seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name); for (mtype = 0; mtype < MIGRATE_TYPES; mtype++) seq_printf(m, "%12lu ", count[mtype]); seq_putc(m, ' '); } |
f113e6412 mm/vmstat.c: fix ... |
1464 |
/* Print out the number of pageblocks for each migratetype */ |
467c996c1 Print out statist... |
1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 |
static int pagetypeinfo_showblockcount(struct seq_file *m, void *arg) { int mtype; pg_data_t *pgdat = (pg_data_t *)arg; seq_printf(m, " %-23s", "Number of blocks type "); for (mtype = 0; mtype < MIGRATE_TYPES; mtype++) seq_printf(m, "%12s ", migratetype_names[mtype]); seq_putc(m, ' '); |
727c080f0 mm: avoid taking ... |
1476 1477 |
walk_zones_in_node(m, pgdat, true, false, pagetypeinfo_showblockcount_print); |
467c996c1 Print out statist... |
1478 1479 1480 |
return 0; } |
48c96a368 mm/page_owner: ke... |
1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 |
/* * Print out the number of pageblocks for each migratetype that contain pages * of other types. This gives an indication of how well fallbacks are being * contained by rmqueue_fallback(). It requires information from PAGE_OWNER * to determine what is going on */ static void pagetypeinfo_showmixedcount(struct seq_file *m, pg_data_t *pgdat) { #ifdef CONFIG_PAGE_OWNER int mtype; |
7dd80b8af mm, page_owner: c... |
1491 |
if (!static_branch_unlikely(&page_owner_inited)) |
48c96a368 mm/page_owner: ke... |
1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 |
return; drain_all_pages(NULL); seq_printf(m, " %-23s", "Number of mixed blocks "); for (mtype = 0; mtype < MIGRATE_TYPES; mtype++) seq_printf(m, "%12s ", migratetype_names[mtype]); seq_putc(m, ' '); |
727c080f0 mm: avoid taking ... |
1502 1503 |
walk_zones_in_node(m, pgdat, true, true, pagetypeinfo_showmixedcount_print); |
48c96a368 mm/page_owner: ke... |
1504 1505 |
#endif /* CONFIG_PAGE_OWNER */ } |
467c996c1 Print out statist... |
1506 1507 1508 1509 1510 1511 1512 |
/* * This prints out statistics in relation to grouping pages by mobility. * It is expensive to collect so do not constantly read the file. */ static int pagetypeinfo_show(struct seq_file *m, void *arg) { pg_data_t *pgdat = (pg_data_t *)arg; |
41b25a378 /proc/pagetypeinf... |
1513 |
/* check memoryless node */ |
a47b53c5f vmstat: use N_MEM... |
1514 |
if (!node_state(pgdat->node_id, N_MEMORY)) |
41b25a378 /proc/pagetypeinf... |
1515 |
return 0; |
467c996c1 Print out statist... |
1516 1517 1518 1519 1520 1521 1522 1523 |
seq_printf(m, "Page block order: %d ", pageblock_order); seq_printf(m, "Pages per block: %lu ", pageblock_nr_pages); seq_putc(m, ' '); pagetypeinfo_showfree(m, pgdat); pagetypeinfo_showblockcount(m, pgdat); |
48c96a368 mm/page_owner: ke... |
1524 |
pagetypeinfo_showmixedcount(m, pgdat); |
467c996c1 Print out statist... |
1525 |
|
f6ac2354d [PATCH] zoned vm ... |
1526 1527 |
return 0; } |
8f32f7e5a proc: move /proc/... |
1528 |
static const struct seq_operations fragmentation_op = { |
f6ac2354d [PATCH] zoned vm ... |
1529 1530 1531 1532 1533 |
.start = frag_start, .next = frag_next, .stop = frag_stop, .show = frag_show, }; |
74e2e8e8c proc: move /proc/... |
1534 |
static const struct seq_operations pagetypeinfo_op = { |
467c996c1 Print out statist... |
1535 1536 1537 1538 1539 |
.start = frag_start, .next = frag_next, .stop = frag_stop, .show = pagetypeinfo_show, }; |
e2ecc8a79 mm, vmstat: print... |
1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 |
static bool is_zone_first_populated(pg_data_t *pgdat, struct zone *zone) { int zid; for (zid = 0; zid < MAX_NR_ZONES; zid++) { struct zone *compare = &pgdat->node_zones[zid]; if (populated_zone(compare)) return zone == compare; } |
e2ecc8a79 mm, vmstat: print... |
1550 1551 |
return false; } |
467c996c1 Print out statist... |
1552 1553 |
static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone) |
f6ac2354d [PATCH] zoned vm ... |
1554 |
{ |
467c996c1 Print out statist... |
1555 1556 |
int i; seq_printf(m, "Node %d, zone %8s", pgdat->node_id, zone->name); |
e2ecc8a79 mm, vmstat: print... |
1557 1558 1559 1560 |
if (is_zone_first_populated(pgdat, zone)) { seq_printf(m, " per-node stats"); for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { |
9d7ea9a29 mm/vmstat: add he... |
1561 1562 |
seq_printf(m, " %-12s %lu", node_stat_name(i), |
ea426c2a7 mm: memcg: prepar... |
1563 |
node_page_state_pages(pgdat, i)); |
e2ecc8a79 mm, vmstat: print... |
1564 1565 |
} } |
467c996c1 Print out statist... |
1566 1567 1568 1569 1570 1571 1572 1573 1574 |
seq_printf(m, " pages free %lu" " min %lu" " low %lu" " high %lu" |
467c996c1 Print out statist... |
1575 1576 |
" spanned %lu" |
9feedc9d8 mm: introduce new... |
1577 1578 1579 1580 |
" present %lu" " managed %lu", |
88f5acf88 mm: page allocato... |
1581 |
zone_page_state(zone, NR_FREE_PAGES), |
418589663 page allocator: u... |
1582 1583 1584 |
min_wmark_pages(zone), low_wmark_pages(zone), high_wmark_pages(zone), |
467c996c1 Print out statist... |
1585 |
zone->spanned_pages, |
9feedc9d8 mm: introduce new... |
1586 |
zone->present_pages, |
9705bea5f mm: convert zone-... |
1587 |
zone_managed_pages(zone)); |
467c996c1 Print out statist... |
1588 |
|
467c996c1 Print out statist... |
1589 |
seq_printf(m, |
3484b2de9 mm: rearrange zon... |
1590 1591 |
" protection: (%ld", |
467c996c1 Print out statist... |
1592 1593 |
zone->lowmem_reserve[0]); for (i = 1; i < ARRAY_SIZE(zone->lowmem_reserve); i++) |
3484b2de9 mm: rearrange zon... |
1594 |
seq_printf(m, ", %ld", zone->lowmem_reserve[i]); |
7dfb8bf3b mm, vmstat: suppr... |
1595 |
seq_putc(m, ')'); |
a8a4b7aea Revert "mm/vmstat... |
1596 1597 1598 1599 1600 1601 |
/* If unpopulated, no other information is useful */ if (!populated_zone(zone)) { seq_putc(m, ' '); return; } |
7dfb8bf3b mm, vmstat: suppr... |
1602 |
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) |
9d7ea9a29 mm/vmstat: add he... |
1603 1604 1605 |
seq_printf(m, " %-12s %lu", zone_stat_name(i), zone_page_state(zone, i)); |
7dfb8bf3b mm, vmstat: suppr... |
1606 |
|
3a321d2a3 mm: change the ca... |
1607 1608 |
#ifdef CONFIG_NUMA for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) |
9d7ea9a29 mm/vmstat: add he... |
1609 1610 1611 |
seq_printf(m, " %-12s %lu", numa_stat_name(i), zone_numa_state_snapshot(zone, i)); |
3a321d2a3 mm: change the ca... |
1612 |
#endif |
7dfb8bf3b mm, vmstat: suppr... |
1613 1614 |
seq_printf(m, " pagesets"); |
467c996c1 Print out statist... |
1615 1616 |
for_each_online_cpu(i) { struct per_cpu_pageset *pageset; |
467c996c1 Print out statist... |
1617 |
|
99dcc3e5a this_cpu: Page al... |
1618 |
pageset = per_cpu_ptr(zone->pageset, i); |
3dfa5721f Page allocator: g... |
1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 |
seq_printf(m, " cpu: %i" " count: %i" " high: %i" " batch: %i", i, pageset->pcp.count, pageset->pcp.high, pageset->pcp.batch); |
df9ecaba3 [PATCH] ZVC: Scal... |
1632 |
#ifdef CONFIG_SMP |
467c996c1 Print out statist... |
1633 1634 1635 |
seq_printf(m, " vm stats threshold: %d", pageset->stat_threshold); |
df9ecaba3 [PATCH] ZVC: Scal... |
1636 |
#endif |
f6ac2354d [PATCH] zoned vm ... |
1637 |
} |
467c996c1 Print out statist... |
1638 |
seq_printf(m, |
599d0c954 mm, vmscan: move ... |
1639 1640 |
" node_unreclaimable: %u" |
3a50d14d0 mm: remove unused... |
1641 1642 |
" start_pfn: %lu", |
c73322d09 mm: fix 100% CPU ... |
1643 |
pgdat->kswapd_failures >= MAX_RECLAIM_RETRIES, |
3a50d14d0 mm: remove unused... |
1644 |
zone->zone_start_pfn); |
467c996c1 Print out statist... |
1645 1646 1647 1648 1649 |
seq_putc(m, ' '); } /* |
b2bd85981 mm, vmstat: print... |
1650 1651 1652 1653 |
* Output information about zones in @pgdat. All zones are printed regardless * of whether they are populated or not: lowmem_reserve_ratio operates on the * set of all zones and userspace would not be aware of such zones if they are * suppressed here (zoneinfo displays the effect of lowmem_reserve_ratio). |
467c996c1 Print out statist... |
1654 1655 1656 1657 |
*/ static int zoneinfo_show(struct seq_file *m, void *arg) { pg_data_t *pgdat = (pg_data_t *)arg; |
727c080f0 mm: avoid taking ... |
1658 |
walk_zones_in_node(m, pgdat, false, false, zoneinfo_show_print); |
f6ac2354d [PATCH] zoned vm ... |
1659 1660 |
return 0; } |
5c9fe6281 proc: move /proc/... |
1661 |
static const struct seq_operations zoneinfo_op = { |
f6ac2354d [PATCH] zoned vm ... |
1662 1663 1664 1665 1666 1667 |
.start = frag_start, /* iterate over all zones. The same as in * fragmentation. */ .next = frag_next, .stop = frag_stop, .show = zoneinfo_show, }; |
9d7ea9a29 mm/vmstat: add he... |
1668 1669 1670 1671 1672 1673 |
#define NR_VMSTAT_ITEMS (NR_VM_ZONE_STAT_ITEMS + \ NR_VM_NUMA_STAT_ITEMS + \ NR_VM_NODE_STAT_ITEMS + \ NR_VM_WRITEBACK_STAT_ITEMS + \ (IS_ENABLED(CONFIG_VM_EVENT_COUNTERS) ? \ NR_VM_EVENT_ITEMS : 0)) |
79da826ae writeback: report... |
1674 |
|
f6ac2354d [PATCH] zoned vm ... |
1675 1676 |
static void *vmstat_start(struct seq_file *m, loff_t *pos) { |
2244b95a7 [PATCH] zoned vm ... |
1677 |
unsigned long *v; |
9d7ea9a29 mm/vmstat: add he... |
1678 |
int i; |
f6ac2354d [PATCH] zoned vm ... |
1679 |
|
9d7ea9a29 mm/vmstat: add he... |
1680 |
if (*pos >= NR_VMSTAT_ITEMS) |
f6ac2354d [PATCH] zoned vm ... |
1681 |
return NULL; |
79da826ae writeback: report... |
1682 |
|
9d7ea9a29 mm/vmstat: add he... |
1683 1684 |
BUILD_BUG_ON(ARRAY_SIZE(vmstat_text) < NR_VMSTAT_ITEMS); v = kmalloc_array(NR_VMSTAT_ITEMS, sizeof(unsigned long), GFP_KERNEL); |
2244b95a7 [PATCH] zoned vm ... |
1685 1686 |
m->private = v; if (!v) |
f6ac2354d [PATCH] zoned vm ... |
1687 |
return ERR_PTR(-ENOMEM); |
2244b95a7 [PATCH] zoned vm ... |
1688 |
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) |
c41f012ad mm: rename global... |
1689 |
v[i] = global_zone_page_state(i); |
79da826ae writeback: report... |
1690 |
v += NR_VM_ZONE_STAT_ITEMS; |
3a321d2a3 mm: change the ca... |
1691 1692 1693 1694 1695 |
#ifdef CONFIG_NUMA for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) v[i] = global_numa_state(i); v += NR_VM_NUMA_STAT_ITEMS; #endif |
75ef71840 mm, vmstat: add i... |
1696 |
for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) |
ea426c2a7 mm: memcg: prepar... |
1697 |
v[i] = global_node_page_state_pages(i); |
75ef71840 mm, vmstat: add i... |
1698 |
v += NR_VM_NODE_STAT_ITEMS; |
79da826ae writeback: report... |
1699 1700 1701 |
global_dirty_limits(v + NR_DIRTY_BG_THRESHOLD, v + NR_DIRTY_THRESHOLD); v += NR_VM_WRITEBACK_STAT_ITEMS; |
f8891e5e1 [PATCH] Light wei... |
1702 |
#ifdef CONFIG_VM_EVENT_COUNTERS |
79da826ae writeback: report... |
1703 1704 1705 |
all_vm_events(v); v[PGPGIN] /= 2; /* sectors -> kbytes */ v[PGPGOUT] /= 2; |
f8891e5e1 [PATCH] Light wei... |
1706 |
#endif |
ff8b16d7e vmstat: fix offse... |
1707 |
return (unsigned long *)m->private + *pos; |
f6ac2354d [PATCH] zoned vm ... |
1708 1709 1710 1711 1712 |
} static void *vmstat_next(struct seq_file *m, void *arg, loff_t *pos) { (*pos)++; |
9d7ea9a29 mm/vmstat: add he... |
1713 |
if (*pos >= NR_VMSTAT_ITEMS) |
f6ac2354d [PATCH] zoned vm ... |
1714 1715 1716 1717 1718 1719 1720 1721 |
return NULL; return (unsigned long *)m->private + *pos; } static int vmstat_show(struct seq_file *m, void *arg) { unsigned long *l = arg; unsigned long off = l - (unsigned long *)m->private; |
68ba0326b proc: much faster... |
1722 1723 |
seq_puts(m, vmstat_text[off]); |
75ba1d07f seq/proc: modify ... |
1724 |
seq_put_decimal_ull(m, " ", *l); |
68ba0326b proc: much faster... |
1725 1726 |
seq_putc(m, ' '); |
8d92890bd mm/writeback: dis... |
1727 1728 1729 1730 1731 1732 1733 1734 1735 |
if (off == NR_VMSTAT_ITEMS - 1) { /* * We've come to the end - add any deprecated counters to avoid * breaking userspace which might depend on them being present. */ seq_puts(m, "nr_unstable 0 "); } |
f6ac2354d [PATCH] zoned vm ... |
1736 1737 1738 1739 1740 1741 1742 1743 |
return 0; } static void vmstat_stop(struct seq_file *m, void *arg) { kfree(m->private); m->private = NULL; } |
b6aa44ab6 proc: move /proc/... |
1744 |
static const struct seq_operations vmstat_op = { |
f6ac2354d [PATCH] zoned vm ... |
1745 1746 1747 1748 1749 |
.start = vmstat_start, .next = vmstat_next, .stop = vmstat_stop, .show = vmstat_show, }; |
f6ac2354d [PATCH] zoned vm ... |
1750 |
#endif /* CONFIG_PROC_FS */ |
df9ecaba3 [PATCH] ZVC: Scal... |
1751 |
#ifdef CONFIG_SMP |
d1187ed21 vmstat: use our o... |
1752 |
static DEFINE_PER_CPU(struct delayed_work, vmstat_work); |
77461ab33 Make vm statistic... |
1753 |
int sysctl_stat_interval __read_mostly = HZ; |
d1187ed21 vmstat: use our o... |
1754 |
|
52b6f46bc mm: /proc/sys/vm/... |
1755 1756 1757 1758 1759 1760 1761 |
#ifdef CONFIG_PROC_FS static void refresh_vm_stats(struct work_struct *work) { refresh_cpu_vm_stats(true); } int vmstat_refresh(struct ctl_table *table, int write, |
32927393d sysctl: pass kern... |
1762 |
void *buffer, size_t *lenp, loff_t *ppos) |
52b6f46bc mm: /proc/sys/vm/... |
1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 |
{ long val; int err; int i; /* * The regular update, every sysctl_stat_interval, may come later * than expected: leaving a significant amount in per_cpu buckets. * This is particularly misleading when checking a quantity of HUGE * pages, immediately after running a test. /proc/sys/vm/stat_refresh, * which can equally be echo'ed to or cat'ted from (by root), * can be used to update the stats just before reading them. * |
c41f012ad mm: rename global... |
1776 |
* Oh, and since global_zone_page_state() etc. are so careful to hide |
52b6f46bc mm: /proc/sys/vm/... |
1777 1778 1779 1780 1781 1782 1783 |
* transiently negative values, report an error here if any of * the stats is negative, so we know to go looking for imbalance. */ err = schedule_on_each_cpu(refresh_vm_stats); if (err) return err; for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) { |
75ef71840 mm, vmstat: add i... |
1784 |
val = atomic_long_read(&vm_zone_stat[i]); |
52b6f46bc mm: /proc/sys/vm/... |
1785 |
if (val < 0) { |
c822f6223 mm: delete NR_PAG... |
1786 1787 |
pr_warn("%s: %s %ld ", |
9d7ea9a29 mm/vmstat: add he... |
1788 |
__func__, zone_stat_name(i), val); |
c822f6223 mm: delete NR_PAG... |
1789 |
err = -EINVAL; |
52b6f46bc mm: /proc/sys/vm/... |
1790 1791 |
} } |
3a321d2a3 mm: change the ca... |
1792 1793 1794 1795 1796 1797 |
#ifdef CONFIG_NUMA for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) { val = atomic_long_read(&vm_numa_stat[i]); if (val < 0) { pr_warn("%s: %s %ld ", |
9d7ea9a29 mm/vmstat: add he... |
1798 |
__func__, numa_stat_name(i), val); |
3a321d2a3 mm: change the ca... |
1799 1800 1801 1802 |
err = -EINVAL; } } #endif |
52b6f46bc mm: /proc/sys/vm/... |
1803 1804 1805 1806 1807 1808 1809 1810 1811 |
if (err) return err; if (write) *ppos += *lenp; else *lenp = 0; return 0; } #endif /* CONFIG_PROC_FS */ |
d1187ed21 vmstat: use our o... |
1812 1813 |
static void vmstat_update(struct work_struct *w) { |
0eb77e988 vmstat: make vmst... |
1814 |
if (refresh_cpu_vm_stats(true)) { |
7cc36bbdd vmstat: on-demand... |
1815 1816 1817 1818 1819 |
/* * Counters were updated so we expect more updates * to occur in the future. Keep on running the * update worker thread. */ |
ce612879d mm: move pcp and ... |
1820 |
queue_delayed_work_on(smp_processor_id(), mm_percpu_wq, |
f01f17d37 mm, vmstat: make ... |
1821 1822 |
this_cpu_ptr(&vmstat_work), round_jiffies_relative(sysctl_stat_interval)); |
7cc36bbdd vmstat: on-demand... |
1823 1824 1825 1826 |
} } /* |
0eb77e988 vmstat: make vmst... |
1827 1828 1829 1830 |
* Switch off vmstat processing and then fold all the remaining differentials * until the diffs stay at zero. The function is used by NOHZ and can only be * invoked when tick processing is not active. */ |
0eb77e988 vmstat: make vmst... |
1831 |
/* |
7cc36bbdd vmstat: on-demand... |
1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 |
* Check if the diffs for a certain cpu indicate that * an update is needed. */ static bool need_update(int cpu) { struct zone *zone; for_each_populated_zone(zone) { struct per_cpu_pageset *p = per_cpu_ptr(zone->pageset, cpu); BUILD_BUG_ON(sizeof(p->vm_stat_diff[0]) != 1); |
3a321d2a3 mm: change the ca... |
1843 |
#ifdef CONFIG_NUMA |
1d90ca897 mm: update NUMA c... |
1844 |
BUILD_BUG_ON(sizeof(p->vm_numa_stat_diff[0]) != 2); |
3a321d2a3 mm: change the ca... |
1845 |
#endif |
638032224 mm: consider the ... |
1846 |
|
7cc36bbdd vmstat: on-demand... |
1847 1848 |
/* * The fast way of checking if there are any vmstat diffs. |
7cc36bbdd vmstat: on-demand... |
1849 |
*/ |
13c9aaf7f mm/vmstat.c: fix ... |
1850 1851 |
if (memchr_inv(p->vm_stat_diff, 0, NR_VM_ZONE_STAT_ITEMS * sizeof(p->vm_stat_diff[0]))) |
7cc36bbdd vmstat: on-demand... |
1852 |
return true; |
3a321d2a3 mm: change the ca... |
1853 |
#ifdef CONFIG_NUMA |
13c9aaf7f mm/vmstat.c: fix ... |
1854 1855 |
if (memchr_inv(p->vm_numa_stat_diff, 0, NR_VM_NUMA_STAT_ITEMS * sizeof(p->vm_numa_stat_diff[0]))) |
3a321d2a3 mm: change the ca... |
1856 1857 |
return true; #endif |
7cc36bbdd vmstat: on-demand... |
1858 1859 1860 |
} return false; } |
7b8da4c7f vmstat: get rid o... |
1861 1862 1863 1864 1865 |
/* * Switch off vmstat processing and then fold all the remaining differentials * until the diffs stay at zero. The function is used by NOHZ and can only be * invoked when tick processing is not active. */ |
f01f17d37 mm, vmstat: make ... |
1866 1867 1868 1869 |
void quiet_vmstat(void) { if (system_state != SYSTEM_RUNNING) return; |
7b8da4c7f vmstat: get rid o... |
1870 |
if (!delayed_work_pending(this_cpu_ptr(&vmstat_work))) |
f01f17d37 mm, vmstat: make ... |
1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 |
return; if (!need_update(smp_processor_id())) return; /* * Just refresh counters and do not care about the pending delayed * vmstat_update. It doesn't fire that often to matter and canceling * it would be too expensive from this path. * vmstat_shepherd will take care about that for us. */ refresh_cpu_vm_stats(false); } |
7cc36bbdd vmstat: on-demand... |
1884 1885 1886 1887 1888 1889 1890 |
/* * Shepherd worker thread that checks the * differentials of processors that have their worker * threads for vm statistics updates disabled because of * inactivity. */ static void vmstat_shepherd(struct work_struct *w); |
0eb77e988 vmstat: make vmst... |
1891 |
static DECLARE_DEFERRABLE_WORK(shepherd, vmstat_shepherd); |
7cc36bbdd vmstat: on-demand... |
1892 1893 1894 1895 1896 1897 1898 |
static void vmstat_shepherd(struct work_struct *w) { int cpu; get_online_cpus(); /* Check processors whose vmstat worker threads have been disabled */ |
7b8da4c7f vmstat: get rid o... |
1899 |
for_each_online_cpu(cpu) { |
f01f17d37 mm, vmstat: make ... |
1900 |
struct delayed_work *dw = &per_cpu(vmstat_work, cpu); |
7cc36bbdd vmstat: on-demand... |
1901 |
|
7b8da4c7f vmstat: get rid o... |
1902 |
if (!delayed_work_pending(dw) && need_update(cpu)) |
ce612879d mm: move pcp and ... |
1903 |
queue_delayed_work_on(cpu, mm_percpu_wq, dw, 0); |
f01f17d37 mm, vmstat: make ... |
1904 |
} |
7cc36bbdd vmstat: on-demand... |
1905 1906 1907 |
put_online_cpus(); schedule_delayed_work(&shepherd, |
98f4ebb29 mm: align vmstat_... |
1908 |
round_jiffies_relative(sysctl_stat_interval)); |
d1187ed21 vmstat: use our o... |
1909 |
} |
7cc36bbdd vmstat: on-demand... |
1910 |
static void __init start_shepherd_timer(void) |
d1187ed21 vmstat: use our o... |
1911 |
{ |
7cc36bbdd vmstat: on-demand... |
1912 1913 1914 |
int cpu; for_each_possible_cpu(cpu) |
ccde8bd40 vmstat: make vmst... |
1915 |
INIT_DEFERRABLE_WORK(per_cpu_ptr(&vmstat_work, cpu), |
7cc36bbdd vmstat: on-demand... |
1916 |
vmstat_update); |
7cc36bbdd vmstat: on-demand... |
1917 1918 |
schedule_delayed_work(&shepherd, round_jiffies_relative(sysctl_stat_interval)); |
d1187ed21 vmstat: use our o... |
1919 |
} |
03e86dba5 cpu: fix node sta... |
1920 1921 |
static void __init init_cpu_node_state(void) { |
4c501327b mm/vmstat: Avoid ... |
1922 |
int node; |
03e86dba5 cpu: fix node sta... |
1923 |
|
4c501327b mm/vmstat: Avoid ... |
1924 1925 1926 1927 |
for_each_online_node(node) { if (cpumask_weight(cpumask_of_node(node)) > 0) node_set_state(node, N_CPU); } |
03e86dba5 cpu: fix node sta... |
1928 |
} |
5438da977 mm/vmstat: Conver... |
1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 |
static int vmstat_cpu_online(unsigned int cpu) { refresh_zone_stat_thresholds(); node_set_state(cpu_to_node(cpu), N_CPU); return 0; } static int vmstat_cpu_down_prep(unsigned int cpu) { cancel_delayed_work_sync(&per_cpu(vmstat_work, cpu)); return 0; } static int vmstat_cpu_dead(unsigned int cpu) |
807a1bd2b mm: clear N_CPU f... |
1943 |
{ |
4c501327b mm/vmstat: Avoid ... |
1944 |
const struct cpumask *node_cpus; |
5438da977 mm/vmstat: Conver... |
1945 |
int node; |
807a1bd2b mm: clear N_CPU f... |
1946 |
|
5438da977 mm/vmstat: Conver... |
1947 1948 1949 |
node = cpu_to_node(cpu); refresh_zone_stat_thresholds(); |
4c501327b mm/vmstat: Avoid ... |
1950 1951 |
node_cpus = cpumask_of_node(node); if (cpumask_weight(node_cpus) > 0) |
5438da977 mm/vmstat: Conver... |
1952 |
return 0; |
807a1bd2b mm: clear N_CPU f... |
1953 1954 |
node_clear_state(node, N_CPU); |
5438da977 mm/vmstat: Conver... |
1955 |
return 0; |
807a1bd2b mm: clear N_CPU f... |
1956 |
} |
8f32f7e5a proc: move /proc/... |
1957 |
#endif |
df9ecaba3 [PATCH] ZVC: Scal... |
1958 |
|
ce612879d mm: move pcp and ... |
1959 |
struct workqueue_struct *mm_percpu_wq; |
597b7305d mm: move mm_percp... |
1960 |
void __init init_mm_internals(void) |
df9ecaba3 [PATCH] ZVC: Scal... |
1961 |
{ |
ce612879d mm: move pcp and ... |
1962 |
int ret __maybe_unused; |
5438da977 mm/vmstat: Conver... |
1963 |
|
80d136e13 mm: make mm_percp... |
1964 |
mm_percpu_wq = alloc_workqueue("mm_percpu_wq", WQ_MEM_RECLAIM, 0); |
ce612879d mm: move pcp and ... |
1965 1966 |
#ifdef CONFIG_SMP |
5438da977 mm/vmstat: Conver... |
1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 |
ret = cpuhp_setup_state_nocalls(CPUHP_MM_VMSTAT_DEAD, "mm/vmstat:dead", NULL, vmstat_cpu_dead); if (ret < 0) pr_err("vmstat: failed to register 'dead' hotplug state "); ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN, "mm/vmstat:online", vmstat_cpu_online, vmstat_cpu_down_prep); if (ret < 0) pr_err("vmstat: failed to register 'online' hotplug state "); get_online_cpus(); |
03e86dba5 cpu: fix node sta... |
1981 |
init_cpu_node_state(); |
5438da977 mm/vmstat: Conver... |
1982 |
put_online_cpus(); |
d1187ed21 vmstat: use our o... |
1983 |
|
7cc36bbdd vmstat: on-demand... |
1984 |
start_shepherd_timer(); |
8f32f7e5a proc: move /proc/... |
1985 1986 |
#endif #ifdef CONFIG_PROC_FS |
fddda2b7b proc: introduce p... |
1987 |
proc_create_seq("buddyinfo", 0444, NULL, &fragmentation_op); |
abaed0112 mm, vmstat: hide ... |
1988 |
proc_create_seq("pagetypeinfo", 0400, NULL, &pagetypeinfo_op); |
fddda2b7b proc: introduce p... |
1989 1990 |
proc_create_seq("vmstat", 0444, NULL, &vmstat_op); proc_create_seq("zoneinfo", 0444, NULL, &zoneinfo_op); |
8f32f7e5a proc: move /proc/... |
1991 |
#endif |
df9ecaba3 [PATCH] ZVC: Scal... |
1992 |
} |
d7a5752c0 mm: export unusab... |
1993 1994 |
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_COMPACTION) |
d7a5752c0 mm: export unusab... |
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 |
/* * Return an index indicating how much of the available free memory is * unusable for an allocation of the requested size. */ static int unusable_free_index(unsigned int order, struct contig_page_info *info) { /* No free memory is interpreted as all free memory is unusable */ if (info->free_pages == 0) return 1000; /* * Index should be a value between 0 and 1. Return a value to 3 * decimal places. * * 0 => no fragmentation * 1 => high fragmentation */ return div_u64((info->free_pages - (info->free_blocks_suitable << order)) * 1000ULL, info->free_pages); } static void unusable_show_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone) { unsigned int order; int index; struct contig_page_info info; seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name); for (order = 0; order < MAX_ORDER; ++order) { fill_contig_page_info(zone, order, &info); index = unusable_free_index(order, &info); seq_printf(m, "%d.%03d ", index / 1000, index % 1000); } seq_putc(m, ' '); } /* * Display unusable free space index * * The unusable free space index measures how much of the available free * memory cannot be used to satisfy an allocation of a given size and is a * value between 0 and 1. The higher the value, the more of free memory is * unusable and by implication, the worse the external fragmentation is. This * can be expressed as a percentage by multiplying by 100. */ static int unusable_show(struct seq_file *m, void *arg) { pg_data_t *pgdat = (pg_data_t *)arg; /* check memoryless node */ |
a47b53c5f vmstat: use N_MEM... |
2052 |
if (!node_state(pgdat->node_id, N_MEMORY)) |
d7a5752c0 mm: export unusab... |
2053 |
return 0; |
727c080f0 mm: avoid taking ... |
2054 |
walk_zones_in_node(m, pgdat, true, false, unusable_show_print); |
d7a5752c0 mm: export unusab... |
2055 2056 2057 |
return 0; } |
01a995600 mm/vmstat.c: conv... |
2058 |
static const struct seq_operations unusable_sops = { |
d7a5752c0 mm: export unusab... |
2059 2060 2061 2062 2063 |
.start = frag_start, .next = frag_next, .stop = frag_stop, .show = unusable_show, }; |
01a995600 mm/vmstat.c: conv... |
2064 |
DEFINE_SEQ_ATTRIBUTE(unusable); |
d7a5752c0 mm: export unusab... |
2065 |
|
f1a5ab121 mm: export fragme... |
2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 |
static void extfrag_show_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone) { unsigned int order; int index; /* Alloc on stack as interrupts are disabled for zone walk */ struct contig_page_info info; seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name); for (order = 0; order < MAX_ORDER; ++order) { fill_contig_page_info(zone, order, &info); |
56de7263f mm: compaction: d... |
2080 |
index = __fragmentation_index(order, &info); |
f1a5ab121 mm: export fragme... |
2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 |
seq_printf(m, "%d.%03d ", index / 1000, index % 1000); } seq_putc(m, ' '); } /* * Display fragmentation index for orders that allocations would fail for */ static int extfrag_show(struct seq_file *m, void *arg) { pg_data_t *pgdat = (pg_data_t *)arg; |
727c080f0 mm: avoid taking ... |
2094 |
walk_zones_in_node(m, pgdat, true, false, extfrag_show_print); |
f1a5ab121 mm: export fragme... |
2095 2096 2097 |
return 0; } |
01a995600 mm/vmstat.c: conv... |
2098 |
static const struct seq_operations extfrag_sops = { |
f1a5ab121 mm: export fragme... |
2099 2100 2101 2102 2103 |
.start = frag_start, .next = frag_next, .stop = frag_stop, .show = extfrag_show, }; |
01a995600 mm/vmstat.c: conv... |
2104 |
DEFINE_SEQ_ATTRIBUTE(extfrag); |
f1a5ab121 mm: export fragme... |
2105 |
|
d7a5752c0 mm: export unusab... |
2106 2107 |
static int __init extfrag_debug_init(void) { |
bde8bd8a1 mm/vmstat.c: remo... |
2108 |
struct dentry *extfrag_debug_root; |
d7a5752c0 mm: export unusab... |
2109 |
extfrag_debug_root = debugfs_create_dir("extfrag", NULL); |
d7a5752c0 mm: export unusab... |
2110 |
|
d9f7979c9 mm: no need to ch... |
2111 |
debugfs_create_file("unusable_index", 0444, extfrag_debug_root, NULL, |
01a995600 mm/vmstat.c: conv... |
2112 |
&unusable_fops); |
d7a5752c0 mm: export unusab... |
2113 |
|
d9f7979c9 mm: no need to ch... |
2114 |
debugfs_create_file("extfrag_index", 0444, extfrag_debug_root, NULL, |
01a995600 mm/vmstat.c: conv... |
2115 |
&extfrag_fops); |
f1a5ab121 mm: export fragme... |
2116 |
|
d7a5752c0 mm: export unusab... |
2117 2118 2119 2120 2121 |
return 0; } module_init(extfrag_debug_init); #endif |