linux/mm/damon/ops-common.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Common Primitives for Data Access Monitoring
 *
 * Author: SeongJae Park <[email protected]>
 */

#include <linux/mmu_notifier.h>
#include <linux/page_idle.h>
#include <linux/pagemap.h>
#include <linux/rmap.h>

#include "ops-common.h"

/*
 * Get an online page for a pfn if it's in the LRU list.  Otherwise, returns
 * NULL.
 *
 * The body of this function is stolen from the 'page_idle_get_folio()'.  We
 * steal rather than reuse it because the code is quite simple.
 */
struct folio *damon_get_folio(unsigned long pfn)
{ … }

void damon_ptep_mkold(pte_t *pte, struct vm_area_struct *vma, unsigned long addr)
{ … }

void damon_pmdp_mkold(pmd_t *pmd, struct vm_area_struct *vma, unsigned long addr)
{ … }

#define DAMON_MAX_SUBSCORE …
#define DAMON_MAX_AGE_IN_LOG …

int damon_hot_score(struct damon_ctx *c, struct damon_region *r,
			struct damos *s)
{ … }

int damon_cold_score(struct damon_ctx *c, struct damon_region *r,
			struct damos *s)
{ … }