From: Asier Gutierrez Introduce DAMOS_QUOTA_HUGEPAGE auto tuning Add a new DAMOS quota goal metric to measure the amount of huge page consumption to total memory consumption ratio. Signed-off-by: Asier Gutierrez --- include/linux/damon.h | 2 ++ mm/damon/core.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 6f7edb3590ef..23a9cec05033 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -162,6 +162,7 @@ enum damos_action { * @DAMOS_QUOTA_INACTIVE_MEM_BP: Inactive to total LRU memory ratio. * @DAMOS_QUOTA_NODE_ELIGIBLE_MEM_BP: Scheme-eligible memory ratio of a * node in basis points (0-10000). + * @DAMOS_QUOTA_HUGEPAGE_MEM_BP: Huge page to total used memory ratio. * @NR_DAMOS_QUOTA_GOAL_METRICS: Number of DAMOS quota goal metrics. * * Metrics equal to larger than @NR_DAMOS_QUOTA_GOAL_METRICS are unsupported. @@ -176,6 +177,7 @@ enum damos_quota_goal_metric { DAMOS_QUOTA_ACTIVE_MEM_BP, DAMOS_QUOTA_INACTIVE_MEM_BP, DAMOS_QUOTA_NODE_ELIGIBLE_MEM_BP, + DAMOS_QUOTA_HUGEPAGE_MEM_BP, NR_DAMOS_QUOTA_GOAL_METRICS, }; diff --git a/mm/damon/core.c b/mm/damon/core.c index 7e4b9affc5b0..b001f80681b1 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -2795,6 +2795,17 @@ static unsigned int damos_get_in_active_mem_bp(bool active_ratio) return mult_frac(inactive, 10000, total); } +static unsigned int damos_hugepage_mem_bp(void) +{ + unsigned long thp, total; + + thp = global_node_page_state(NR_ANON_THPS) + + global_node_page_state(NR_SHMEM_THPS) + + global_node_page_state(NR_FILE_THPS); + total = totalram_pages() - global_zone_page_state(NR_FREE_PAGES); + return mult_frac(thp, 10000, total); +} + static void damos_set_quota_goal_current_value(struct damon_ctx *c, struct damos *s, struct damos_quota_goal *goal) { @@ -2826,6 +2837,9 @@ static void damos_set_quota_goal_current_value(struct damon_ctx *c, goal->current_value = damos_get_node_eligible_mem_bp(c, s, goal->nid); break; + case DAMOS_QUOTA_HUGEPAGE_MEM_BP: + goal->current_value = damos_hugepage_mem_bp(); + break; default: break; } -- 2.43.0