453 lines
12 KiB
C
453 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_VMSTAT_H
|
|
#define _LINUX_VMSTAT_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/percpu.h>
|
|
#include <linux/mmzone.h>
|
|
#include <linux/vm_event_item.h>
|
|
#include <linux/atomic.h>
|
|
#include <linux/static_key.h>
|
|
#include <linux/mmdebug.h>
|
|
|
|
extern int sysctl_stat_interval;
|
|
|
|
#ifdef CONFIG_NUMA
|
|
#define ENABLE_NUMA_STAT 1
|
|
#define DISABLE_NUMA_STAT 0
|
|
extern int sysctl_vm_numa_stat;
|
|
DECLARE_STATIC_KEY_TRUE(vm_numa_stat_key);
|
|
extern int sysctl_vm_numa_stat_handler(struct ctl_table *table,
|
|
int write, void __user *buffer, size_t *length, loff_t *ppos);
|
|
#endif
|
|
|
|
struct reclaim_stat {
|
|
unsigned nr_dirty;
|
|
unsigned nr_unqueued_dirty;
|
|
unsigned nr_congested;
|
|
unsigned nr_writeback;
|
|
unsigned nr_immediate;
|
|
unsigned nr_pageout;
|
|
unsigned nr_activate[ANON_AND_FILE];
|
|
unsigned nr_ref_keep;
|
|
unsigned nr_unmap_fail;
|
|
};
|
|
|
|
enum writeback_stat_item {
|
|
NR_DIRTY_THRESHOLD,
|
|
NR_DIRTY_BG_THRESHOLD,
|
|
NR_VM_WRITEBACK_STAT_ITEMS,
|
|
};
|
|
|
|
#ifdef CONFIG_VM_EVENT_COUNTERS
|
|
/*
|
|
* Light weight per cpu counter implementation.
|
|
*
|
|
* Counters should only be incremented and no critical kernel component
|
|
* should rely on the counter values.
|
|
*
|
|
* Counters are handled completely inline. On many platforms the code
|
|
* generated will simply be the increment of a global address.
|
|
*/
|
|
|
|
struct vm_event_state {
|
|
unsigned long event[NR_VM_EVENT_ITEMS];
|
|
};
|
|
|
|
DECLARE_PER_CPU(struct vm_event_state, vm_event_states);
|
|
|
|
/*
|
|
* vm counters are allowed to be racy. Use raw_cpu_ops to avoid the
|
|
* local_irq_disable overhead.
|
|
*/
|
|
static inline void __count_vm_event(enum vm_event_item item)
|
|
{
|
|
raw_cpu_inc(vm_event_states.event[item]);
|
|
}
|
|
|
|
static inline void count_vm_event(enum vm_event_item item)
|
|
{
|
|
this_cpu_inc(vm_event_states.event[item]);
|
|
}
|
|
|
|
static inline void __count_vm_events(enum vm_event_item item, long delta)
|
|
{
|
|
raw_cpu_add(vm_event_states.event[item], delta);
|
|
}
|
|
|
|
static inline void count_vm_events(enum vm_event_item item, long delta)
|
|
{
|
|
this_cpu_add(vm_event_states.event[item], delta);
|
|
}
|
|
|
|
extern void all_vm_events(unsigned long *);
|
|
|
|
extern void vm_events_fold_cpu(int cpu);
|
|
|
|
#else
|
|
|
|
/* Disable counters */
|
|
static inline void count_vm_event(enum vm_event_item item)
|
|
{
|
|
}
|
|
static inline void count_vm_events(enum vm_event_item item, long delta)
|
|
{
|
|
}
|
|
static inline void __count_vm_event(enum vm_event_item item)
|
|
{
|
|
}
|
|
static inline void __count_vm_events(enum vm_event_item item, long delta)
|
|
{
|
|
}
|
|
static inline void all_vm_events(unsigned long *ret)
|
|
{
|
|
}
|
|
static inline void vm_events_fold_cpu(int cpu)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_VM_EVENT_COUNTERS */
|
|
|
|
#ifdef CONFIG_NUMA_BALANCING
|
|
#define count_vm_numa_event(x) count_vm_event(x)
|
|
#define count_vm_numa_events(x, y) count_vm_events(x, y)
|
|
#else
|
|
#define count_vm_numa_event(x) do {} while (0)
|
|
#define count_vm_numa_events(x, y) do { (void)(y); } while (0)
|
|
#endif /* CONFIG_NUMA_BALANCING */
|
|
|
|
#ifdef CONFIG_DEBUG_TLBFLUSH
|
|
#define count_vm_tlb_event(x) count_vm_event(x)
|
|
#define count_vm_tlb_events(x, y) count_vm_events(x, y)
|
|
#else
|
|
#define count_vm_tlb_event(x) do {} while (0)
|
|
#define count_vm_tlb_events(x, y) do { (void)(y); } while (0)
|
|
#endif
|
|
|
|
#ifdef CONFIG_DEBUG_VM_VMACACHE
|
|
#define count_vm_vmacache_event(x) count_vm_event(x)
|
|
#else
|
|
#define count_vm_vmacache_event(x) do {} while (0)
|
|
#endif
|
|
|
|
#define __count_zid_vm_events(item, zid, delta) \
|
|
__count_vm_events(item##_NORMAL - ZONE_NORMAL + zid, delta)
|
|
|
|
/*
|
|
* Zone and node-based page accounting with per cpu differentials.
|
|
*/
|
|
extern atomic_long_t vm_zone_stat[NR_VM_ZONE_STAT_ITEMS];
|
|
extern atomic_long_t vm_numa_stat[NR_VM_NUMA_STAT_ITEMS];
|
|
extern atomic_long_t vm_node_stat[NR_VM_NODE_STAT_ITEMS];
|
|
|
|
#ifdef CONFIG_NUMA
|
|
static inline void zone_numa_state_add(long x, struct zone *zone,
|
|
enum numa_stat_item item)
|
|
{
|
|
atomic_long_add(x, &zone->vm_numa_stat[item]);
|
|
atomic_long_add(x, &vm_numa_stat[item]);
|
|
}
|
|
|
|
static inline unsigned long global_numa_state(enum numa_stat_item item)
|
|
{
|
|
long x = atomic_long_read(&vm_numa_stat[item]);
|
|
|
|
return x;
|
|
}
|
|
|
|
static inline unsigned long zone_numa_state_snapshot(struct zone *zone,
|
|
enum numa_stat_item item)
|
|
{
|
|
long x = atomic_long_read(&zone->vm_numa_stat[item]);
|
|
int cpu;
|
|
|
|
for_each_online_cpu(cpu)
|
|
x += per_cpu_ptr(zone->pageset, cpu)->vm_numa_stat_diff[item];
|
|
|
|
return x;
|
|
}
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
static inline void zone_page_state_add(long x, struct zone *zone,
|
|
enum zone_stat_item item)
|
|
{
|
|
atomic_long_add(x, &zone->vm_stat[item]);
|
|
atomic_long_add(x, &vm_zone_stat[item]);
|
|
}
|
|
|
|
static inline void node_page_state_add(long x, struct pglist_data *pgdat,
|
|
enum node_stat_item item)
|
|
{
|
|
atomic_long_add(x, &pgdat->vm_stat[item]);
|
|
atomic_long_add(x, &vm_node_stat[item]);
|
|
}
|
|
|
|
static inline unsigned long global_zone_page_state(enum zone_stat_item item)
|
|
{
|
|
long x = atomic_long_read(&vm_zone_stat[item]);
|
|
#ifdef CONFIG_SMP
|
|
if (x < 0)
|
|
x = 0;
|
|
#endif
|
|
return x;
|
|
}
|
|
|
|
static inline
|
|
unsigned long global_node_page_state_pages(enum node_stat_item item)
|
|
{
|
|
long x = atomic_long_read(&vm_node_stat[item]);
|
|
#ifdef CONFIG_SMP
|
|
if (x < 0)
|
|
x = 0;
|
|
#endif
|
|
return x;
|
|
}
|
|
|
|
static inline unsigned long global_node_page_state(enum node_stat_item item)
|
|
{
|
|
VM_WARN_ON_ONCE(vmstat_item_in_bytes(item));
|
|
|
|
return global_node_page_state_pages(item);
|
|
}
|
|
|
|
static inline unsigned long zone_page_state(struct zone *zone,
|
|
enum zone_stat_item item)
|
|
{
|
|
long x = atomic_long_read(&zone->vm_stat[item]);
|
|
#ifdef CONFIG_SMP
|
|
if (x < 0)
|
|
x = 0;
|
|
#endif
|
|
return x;
|
|
}
|
|
|
|
/*
|
|
* More accurate version that also considers the currently pending
|
|
* deltas. For that we need to loop over all cpus to find the current
|
|
* deltas. There is no synchronization so the result cannot be
|
|
* exactly accurate either.
|
|
*/
|
|
static inline unsigned long zone_page_state_snapshot(struct zone *zone,
|
|
enum zone_stat_item item)
|
|
{
|
|
long x = atomic_long_read(&zone->vm_stat[item]);
|
|
|
|
#ifdef CONFIG_SMP
|
|
int cpu;
|
|
for_each_online_cpu(cpu)
|
|
x += per_cpu_ptr(zone->pageset, cpu)->vm_stat_diff[item];
|
|
|
|
if (x < 0)
|
|
x = 0;
|
|
#endif
|
|
return x;
|
|
}
|
|
|
|
#ifdef CONFIG_NUMA
|
|
extern void __inc_numa_state(struct zone *zone, enum numa_stat_item item);
|
|
extern unsigned long sum_zone_node_page_state(int node,
|
|
enum zone_stat_item item);
|
|
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)
|
|
#define node_page_state_pages(node, item) global_node_page_state_pages(item)
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
#ifdef CONFIG_SMP
|
|
void __mod_zone_page_state(struct zone *, enum zone_stat_item item, long);
|
|
void __inc_zone_page_state(struct page *, enum zone_stat_item);
|
|
void __dec_zone_page_state(struct page *, enum zone_stat_item);
|
|
|
|
void __mod_node_page_state(struct pglist_data *, enum node_stat_item item, long);
|
|
void __inc_node_page_state(struct page *, enum node_stat_item);
|
|
void __dec_node_page_state(struct page *, enum node_stat_item);
|
|
|
|
void mod_zone_page_state(struct zone *, enum zone_stat_item, long);
|
|
void inc_zone_page_state(struct page *, enum zone_stat_item);
|
|
void dec_zone_page_state(struct page *, enum zone_stat_item);
|
|
|
|
void mod_node_page_state(struct pglist_data *, enum node_stat_item, long);
|
|
void inc_node_page_state(struct page *, enum node_stat_item);
|
|
void dec_node_page_state(struct page *, enum node_stat_item);
|
|
|
|
extern void inc_node_state(struct pglist_data *, enum node_stat_item);
|
|
extern void __inc_zone_state(struct zone *, enum zone_stat_item);
|
|
extern void __inc_node_state(struct pglist_data *, enum node_stat_item);
|
|
extern void dec_zone_state(struct zone *, enum zone_stat_item);
|
|
extern void __dec_zone_state(struct zone *, enum zone_stat_item);
|
|
extern void __dec_node_state(struct pglist_data *, enum node_stat_item);
|
|
|
|
void quiet_vmstat(void);
|
|
void cpu_vm_stats_fold(int cpu);
|
|
void refresh_zone_stat_thresholds(void);
|
|
|
|
struct ctl_table;
|
|
int vmstat_refresh(struct ctl_table *, int write,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos);
|
|
|
|
void drain_zonestat(struct zone *zone, struct per_cpu_pageset *);
|
|
|
|
int calculate_pressure_threshold(struct zone *zone);
|
|
int calculate_normal_threshold(struct zone *zone);
|
|
void set_pgdat_percpu_threshold(pg_data_t *pgdat,
|
|
int (*calculate_pressure)(struct zone *));
|
|
#else /* CONFIG_SMP */
|
|
|
|
/*
|
|
* We do not maintain differentials in a single processor configuration.
|
|
* The functions directly modify the zone and global counters.
|
|
*/
|
|
static inline void __mod_zone_page_state(struct zone *zone,
|
|
enum zone_stat_item item, long delta)
|
|
{
|
|
zone_page_state_add(delta, zone, item);
|
|
}
|
|
|
|
static inline void __mod_node_page_state(struct pglist_data *pgdat,
|
|
enum node_stat_item item, int delta)
|
|
{
|
|
if (vmstat_item_in_bytes(item)) {
|
|
VM_WARN_ON_ONCE(delta & (PAGE_SIZE - 1));
|
|
delta >>= PAGE_SHIFT;
|
|
}
|
|
|
|
node_page_state_add(delta, pgdat, item);
|
|
}
|
|
|
|
static inline void __inc_zone_state(struct zone *zone, enum zone_stat_item item)
|
|
{
|
|
atomic_long_inc(&zone->vm_stat[item]);
|
|
atomic_long_inc(&vm_zone_stat[item]);
|
|
}
|
|
|
|
static inline void __inc_node_state(struct pglist_data *pgdat, enum node_stat_item item)
|
|
{
|
|
atomic_long_inc(&pgdat->vm_stat[item]);
|
|
atomic_long_inc(&vm_node_stat[item]);
|
|
}
|
|
|
|
static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item)
|
|
{
|
|
atomic_long_dec(&zone->vm_stat[item]);
|
|
atomic_long_dec(&vm_zone_stat[item]);
|
|
}
|
|
|
|
static inline void __dec_node_state(struct pglist_data *pgdat, enum node_stat_item item)
|
|
{
|
|
atomic_long_dec(&pgdat->vm_stat[item]);
|
|
atomic_long_dec(&vm_node_stat[item]);
|
|
}
|
|
|
|
static inline void __inc_zone_page_state(struct page *page,
|
|
enum zone_stat_item item)
|
|
{
|
|
__inc_zone_state(page_zone(page), item);
|
|
}
|
|
|
|
static inline void __inc_node_page_state(struct page *page,
|
|
enum node_stat_item item)
|
|
{
|
|
__inc_node_state(page_pgdat(page), item);
|
|
}
|
|
|
|
|
|
static inline void __dec_zone_page_state(struct page *page,
|
|
enum zone_stat_item item)
|
|
{
|
|
__dec_zone_state(page_zone(page), item);
|
|
}
|
|
|
|
static inline void __dec_node_page_state(struct page *page,
|
|
enum node_stat_item item)
|
|
{
|
|
__dec_node_state(page_pgdat(page), item);
|
|
}
|
|
|
|
|
|
/*
|
|
* We only use atomic operations to update counters. So there is no need to
|
|
* disable interrupts.
|
|
*/
|
|
#define inc_zone_page_state __inc_zone_page_state
|
|
#define dec_zone_page_state __dec_zone_page_state
|
|
#define mod_zone_page_state __mod_zone_page_state
|
|
|
|
#define inc_node_page_state __inc_node_page_state
|
|
#define dec_node_page_state __dec_node_page_state
|
|
#define mod_node_page_state __mod_node_page_state
|
|
|
|
#define inc_zone_state __inc_zone_state
|
|
#define inc_node_state __inc_node_state
|
|
#define dec_zone_state __dec_zone_state
|
|
|
|
#define set_pgdat_percpu_threshold(pgdat, callback) { }
|
|
|
|
static inline void refresh_zone_stat_thresholds(void) { }
|
|
static inline void cpu_vm_stats_fold(int cpu) { }
|
|
static inline void quiet_vmstat(void) { }
|
|
|
|
static inline void drain_zonestat(struct zone *zone,
|
|
struct per_cpu_pageset *pset) { }
|
|
#endif /* CONFIG_SMP */
|
|
|
|
static inline void __mod_zone_freepage_state(struct zone *zone, int nr_pages,
|
|
int migratetype)
|
|
{
|
|
__mod_zone_page_state(zone, NR_FREE_PAGES, nr_pages);
|
|
if (is_migrate_cma(migratetype))
|
|
__mod_zone_page_state(zone, NR_FREE_CMA_PAGES, nr_pages);
|
|
}
|
|
|
|
extern const char * const vmstat_text[];
|
|
|
|
static inline const char *zone_stat_name(enum zone_stat_item item)
|
|
{
|
|
return vmstat_text[item];
|
|
}
|
|
|
|
#ifdef CONFIG_NUMA
|
|
static inline const char *numa_stat_name(enum numa_stat_item item)
|
|
{
|
|
return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
|
|
item];
|
|
}
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
static inline const char *node_stat_name(enum node_stat_item item)
|
|
{
|
|
return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
|
|
NR_VM_NUMA_STAT_ITEMS +
|
|
item];
|
|
}
|
|
|
|
static inline const char *lru_list_name(enum lru_list lru)
|
|
{
|
|
return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
|
|
}
|
|
|
|
static inline const char *writeback_stat_name(enum writeback_stat_item item)
|
|
{
|
|
return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
|
|
NR_VM_NUMA_STAT_ITEMS +
|
|
NR_VM_NODE_STAT_ITEMS +
|
|
item];
|
|
}
|
|
|
|
#if defined(CONFIG_VM_EVENT_COUNTERS) || defined(CONFIG_MEMCG)
|
|
static inline const char *vm_event_name(enum vm_event_item item)
|
|
{
|
|
return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
|
|
NR_VM_NUMA_STAT_ITEMS +
|
|
NR_VM_NODE_STAT_ITEMS +
|
|
NR_VM_WRITEBACK_STAT_ITEMS +
|
|
item];
|
|
}
|
|
#endif /* CONFIG_VM_EVENT_COUNTERS || CONFIG_MEMCG */
|
|
|
|
#endif /* _LINUX_VMSTAT_H */
|