diff --git a/include/linux/damon.h b/include/linux/damon.h index 715dadd21f7cd41c07025d801b025344375db866..9a327bc787b522ed5e69f3047483e1f736995239 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -357,6 +357,8 @@ void damon_va_set_primitives(struct damon_ctx *ctx); void damon_pa_prepare_access_checks(struct damon_ctx *ctx); unsigned int damon_pa_check_accesses(struct damon_ctx *ctx); bool damon_pa_target_valid(void *t); +int damon_pa_apply_scheme(struct damon_ctx *context, struct damon_target *t, + struct damon_region *r, struct damos *scheme); void damon_pa_set_primitives(struct damon_ctx *ctx); #endif /* CONFIG_DAMON_PADDR */ diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index d7a2ecd09ed027e8ddbd4496c8c905493ea40a34..957ada55de77b468eb9da016dfd0b60d28ef762d 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -11,7 +11,9 @@ #include #include #include +#include +#include "../internal.h" #include "prmtv-common.h" static bool __damon_pa_mkold(struct page *page, struct vm_area_struct *vma, @@ -211,6 +213,39 @@ bool damon_pa_target_valid(void *t) return true; } +int damon_pa_apply_scheme(struct damon_ctx *ctx, struct damon_target *t, + struct damon_region *r, struct damos *scheme) +{ + unsigned long addr; + LIST_HEAD(page_list); + + if (scheme->action != DAMOS_PAGEOUT) + return -EINVAL; + + for (addr = r->ar.start; addr < r->ar.end; addr += PAGE_SIZE) { + struct page *page = damon_get_page(PHYS_PFN(addr)); + + if (!page) + continue; + + ClearPageReferenced(page); + test_and_clear_page_young(page); + if (isolate_lru_page(page)) { + put_page(page); + continue; + } + if (PageUnevictable(page)) { + putback_lru_page(page); + } else { + list_add(&page->lru, &page_list); + put_page(page); + } + } + reclaim_pages(&page_list); + cond_resched(); + return 0; +} + void damon_pa_set_primitives(struct damon_ctx *ctx) { ctx->primitive.init = NULL; @@ -220,5 +255,5 @@ void damon_pa_set_primitives(struct damon_ctx *ctx) ctx->primitive.reset_aggregated = NULL; ctx->primitive.target_valid = damon_pa_target_valid; ctx->primitive.cleanup = NULL; - ctx->primitive.apply_scheme = NULL; + ctx->primitive.apply_scheme = damon_pa_apply_scheme; }