diff options
| -rw-r--r-- | include/linux/damon.h | 2 | ||||
| -rw-r--r-- | mm/damon/paddr.c | 20 | ||||
| -rw-r--r-- | mm/damon/sysfs.c | 1 |
3 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/damon.h b/include/linux/damon.h index 4c64e03e94d8..7b1f4a488230 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -87,6 +87,7 @@ struct damon_target { * @DAMOS_HUGEPAGE: Call ``madvise()`` for the region with MADV_HUGEPAGE. * @DAMOS_NOHUGEPAGE: Call ``madvise()`` for the region with MADV_NOHUGEPAGE. * @DAMOS_LRU_PRIO: Prioritize the region on its LRU lists. + * @DAMOS_LRU_DEPRIO: Deprioritize the region on its LRU lists. * @DAMOS_STAT: Do nothing but count the stat. * @NR_DAMOS_ACTIONS: Total number of DAMOS actions */ @@ -97,6 +98,7 @@ enum damos_action { DAMOS_HUGEPAGE, DAMOS_NOHUGEPAGE, DAMOS_LRU_PRIO, + DAMOS_LRU_DEPRIO, DAMOS_STAT, /* Do nothing but only record the stat */ NR_DAMOS_ACTIONS, }; diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index f145b1d51e13..dc131c6a5403 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -249,6 +249,22 @@ static unsigned long damon_pa_mark_accessed(struct damon_region *r) return applied * PAGE_SIZE; } +static unsigned long damon_pa_deactivate_pages(struct damon_region *r) +{ + unsigned long addr, applied = 0; + + for (addr = r->ar.start; addr < r->ar.end; addr += PAGE_SIZE) { + struct page *page = damon_get_page(PHYS_PFN(addr)); + + if (!page) + continue; + deactivate_page(page); + put_page(page); + applied++; + } + return applied * PAGE_SIZE; +} + static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx, struct damon_target *t, struct damon_region *r, struct damos *scheme) @@ -258,6 +274,8 @@ static unsigned long damon_pa_apply_scheme(struct damon_ctx *ctx, return damon_pa_pageout(r); case DAMOS_LRU_PRIO: return damon_pa_mark_accessed(r); + case DAMOS_LRU_DEPRIO: + return damon_pa_deactivate_pages(r); default: break; } @@ -273,6 +291,8 @@ static int damon_pa_scheme_score(struct damon_ctx *context, return damon_pageout_score(context, r, scheme); case DAMOS_LRU_PRIO: return damon_hot_score(context, r, scheme); + case DAMOS_LRU_DEPRIO: + return damon_pageout_score(context, r, scheme); default: break; } diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 86c69f980927..7488e27c87c3 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -763,6 +763,7 @@ static const char * const damon_sysfs_damos_action_strs[] = { "hugepage", "nohugepage", "lru_prio", + "lru_deprio", "stat", }; |