mm/damon: rename damon_pageout_score() to damon_cold_score()

In the beginning there is only one damos_action 'DAMOS_PAGEOUT' that need
to get the coldness score of a region for a scheme, which using
damon_pageout_score() to do that.  But now there are also other
damos_action actions need the coldness score, so rename it to
damon_cold_score() to make more sense.

Link: https://lkml.kernel.org/r/1663423014-28907-1-git-send-email-kaixuxia@tencent.comSigned-off-by: Kaixu Xia <kaixuxia@tencent.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/damon/ops-common.c

@@ -130,7 +130,7 @@ int damon_hot_score(struct damon_ctx *c, struct damon_region *r,
 	return hotness;
 }
 
-int damon_pageout_score(struct damon_ctx *c, struct damon_region *r,
+int damon_cold_score(struct damon_ctx *c, struct damon_region *r,
 			struct damos *s)
 {
 	int hotness = damon_hot_score(c, r, s);

mm/damon/ops-common.h

@@ -12,7 +12,7 @@ struct page *damon_get_page(unsigned long pfn);
 void damon_ptep_mkold(pte_t *pte, struct mm_struct *mm, unsigned long addr);
 void damon_pmdp_mkold(pmd_t *pmd, struct mm_struct *mm, unsigned long addr);
 
-int damon_pageout_score(struct damon_ctx *c, struct damon_region *r,
+int damon_cold_score(struct damon_ctx *c, struct damon_region *r,
 			struct damos *s);
 int damon_hot_score(struct damon_ctx *c, struct damon_region *r,
 			struct damos *s);

mm/damon/paddr.c

@@ -287,11 +287,11 @@ static int damon_pa_scheme_score(struct damon_ctx *context,
 {
 	switch (scheme->action) {
 	case DAMOS_PAGEOUT:
-		return damon_pageout_score(context, r, scheme);
+		return damon_cold_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);
+		return damon_cold_score(context, r, scheme);
 	default:
 		break;
 	}

mm/damon/vaddr.c

@@ -673,7 +673,7 @@ static int damon_va_scheme_score(struct damon_ctx *context,
 
 	switch (scheme->action) {
 	case DAMOS_PAGEOUT:
-		return damon_pageout_score(context, r, scheme);
+		return damon_cold_score(context, r, scheme);
 	default:
 		break;
 	}