diff options
Diffstat (limited to 'mm/damon/ops-common.c')
-rw-r--r-- | mm/damon/ops-common.c | 50 |
1 files changed, 8 insertions, 42 deletions
diff --git a/mm/damon/ops-common.c b/mm/damon/ops-common.c index b1335de200e7..75409601f934 100644 --- a/mm/damon/ops-common.c +++ b/mm/damon/ops-common.c @@ -88,7 +88,7 @@ void damon_pmdp_mkold(pmd_t *pmd, struct mm_struct *mm, unsigned long addr) #define DAMON_MAX_SUBSCORE (100) #define DAMON_MAX_AGE_IN_LOG (32) -int damon_pageout_score(struct damon_ctx *c, struct damon_region *r, +int damon_hot_score(struct damon_ctx *c, struct damon_region *r, struct damos *s) { unsigned int max_nr_accesses; @@ -99,10 +99,10 @@ int damon_pageout_score(struct damon_ctx *c, struct damon_region *r, unsigned int age_weight = s->quota.weight_age; int hotness; - max_nr_accesses = c->aggr_interval / c->sample_interval; + max_nr_accesses = c->attrs.aggr_interval / c->attrs.sample_interval; freq_subscore = r->nr_accesses * DAMON_MAX_SUBSCORE / max_nr_accesses; - age_in_sec = (unsigned long)r->age * c->aggr_interval / 1000000; + age_in_sec = (unsigned long)r->age * c->attrs.aggr_interval / 1000000; for (age_in_log = 0; age_in_log < DAMON_MAX_AGE_IN_LOG && age_in_sec; age_in_log++, age_in_sec >>= 1) ; @@ -127,48 +127,14 @@ int damon_pageout_score(struct damon_ctx *c, struct damon_region *r, */ hotness = hotness * DAMOS_MAX_SCORE / DAMON_MAX_SUBSCORE; - /* Return coldness of the region */ - return DAMOS_MAX_SCORE - hotness; + return hotness; } -int damon_hot_score(struct damon_ctx *c, struct damon_region *r, +int damon_cold_score(struct damon_ctx *c, struct damon_region *r, struct damos *s) { - unsigned int max_nr_accesses; - int freq_subscore; - unsigned int age_in_sec; - int age_in_log, age_subscore; - unsigned int freq_weight = s->quota.weight_nr_accesses; - unsigned int age_weight = s->quota.weight_age; - int hotness; - - max_nr_accesses = c->aggr_interval / c->sample_interval; - freq_subscore = r->nr_accesses * DAMON_MAX_SUBSCORE / max_nr_accesses; - - age_in_sec = (unsigned long)r->age * c->aggr_interval / 1000000; - for (age_in_log = 0; age_in_log < DAMON_MAX_AGE_IN_LOG && age_in_sec; - age_in_log++, age_in_sec >>= 1) - ; + int hotness = damon_hot_score(c, r, s); - /* If frequency is 0, higher age means it's colder */ - if (freq_subscore == 0) - age_in_log *= -1; - - /* - * Now age_in_log is in [-DAMON_MAX_AGE_IN_LOG, DAMON_MAX_AGE_IN_LOG]. - * Scale it to be in [0, 100] and set it as age subscore. - */ - age_in_log += DAMON_MAX_AGE_IN_LOG; - age_subscore = age_in_log * DAMON_MAX_SUBSCORE / - DAMON_MAX_AGE_IN_LOG / 2; - - hotness = (freq_weight * freq_subscore + age_weight * age_subscore); - if (freq_weight + age_weight) - hotness /= freq_weight + age_weight; - /* - * Transform it to fit in [0, DAMOS_MAX_SCORE] - */ - hotness = hotness * DAMOS_MAX_SCORE / DAMON_MAX_SUBSCORE; - - return hotness; + /* Return coldness of the region */ + return DAMOS_MAX_SCORE - hotness; } |