diff --git a/include/linux/damon.h b/include/linux/damon.h index 24de35a8395a..e44e2132ccaf 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -218,9 +218,11 @@ struct damos_quota_goal { /** * enum damos_quota_goal_tuner - Goal-based quota tuning logic. * @DAMOS_QUOTA_GOAL_TUNER_CONSIST: Aim long term consistent quota. + * @DAMOS_QUOTA_GOAL_TUNER_TEMPORAL: Aim zero quota asap. */ enum damos_quota_goal_tuner { DAMOS_QUOTA_GOAL_TUNER_CONSIST, + DAMOS_QUOTA_GOAL_TUNER_TEMPORAL, }; /** diff --git a/mm/damon/core.c b/mm/damon/core.c index db3c59b70e49..b543d1202c9d 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -2347,6 +2347,26 @@ static unsigned long damos_quota_score(struct damos_quota *quota) return highest_score; } +static void damos_goal_tune_esz_bp_consist(struct damos_quota *quota) +{ + unsigned long score = damos_quota_score(quota); + + quota->esz_bp = damon_feed_loop_next_input( + max(quota->esz_bp, 10000UL), score); +} + +static void damos_goal_tune_esz_bp_temporal(struct damos_quota *quota) +{ + unsigned long score = damos_quota_score(quota); + + if (score >= 10000) + quota->esz_bp = 0; + else if (quota->sz) + quota->esz_bp = quota->sz * 10000; + else + quota->esz_bp = ULONG_MAX; +} + /* * Called only if quota->ms, or quota->sz are set, or quota->goals is not empty */ @@ -2361,11 +2381,10 @@ static void damos_set_effective_quota(struct damos_quota *quota) } if (!list_empty("a->goals)) { - unsigned long score = damos_quota_score(quota); - - quota->esz_bp = damon_feed_loop_next_input( - max(quota->esz_bp, 10000UL), - score); + if (quota->goal_tuner == DAMOS_QUOTA_GOAL_TUNER_CONSIST) + damos_goal_tune_esz_bp_consist(quota); + else if (quota->goal_tuner == DAMOS_QUOTA_GOAL_TUNER_TEMPORAL) + damos_goal_tune_esz_bp_temporal(quota); esz = quota->esz_bp / 10000; }