From 658b69c9d85211e2c56af4f73bbe55a4e0da04b2 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox (Oracle) Date: Thu, 29 Apr 2021 14:51:26 -0400 Subject: mm/memcg: Use the node id in mem_cgroup_update_tree() By using the node id in mem_cgroup_update_tree(), we can delete soft_limit_tree_from_page() and mem_cgroup_page_nodeinfo(). Saves 42 bytes of kernel text on my config. Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Michal Hocko Acked-by: Johannes Weiner Reviewed-by: Christoph Hellwig Reviewed-by: David Howells Acked-by: Vlastimil Babka --- mm/memcontrol.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-) (limited to 'mm/memcontrol.c') diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 7d560bbcac70..ac6ed42ca141 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -456,28 +456,12 @@ ino_t page_cgroup_ino(struct page *page) return ino; } -static struct mem_cgroup_per_node * -mem_cgroup_page_nodeinfo(struct mem_cgroup *memcg, struct page *page) -{ - int nid = page_to_nid(page); - - return memcg->nodeinfo[nid]; -} - static struct mem_cgroup_tree_per_node * soft_limit_tree_node(int nid) { return soft_limit_tree.rb_tree_per_node[nid]; } -static struct mem_cgroup_tree_per_node * -soft_limit_tree_from_page(struct page *page) -{ - int nid = page_to_nid(page); - - return soft_limit_tree.rb_tree_per_node[nid]; -} - static void __mem_cgroup_insert_exceeded(struct mem_cgroup_per_node *mz, struct mem_cgroup_tree_per_node *mctz, unsigned long new_usage_in_excess) @@ -548,13 +532,13 @@ static unsigned long soft_limit_excess(struct mem_cgroup *memcg) return excess; } -static void mem_cgroup_update_tree(struct mem_cgroup *memcg, struct page *page) +static void mem_cgroup_update_tree(struct mem_cgroup *memcg, int nid) { unsigned long excess; struct mem_cgroup_per_node *mz; struct mem_cgroup_tree_per_node *mctz; - mctz = soft_limit_tree_from_page(page); + mctz = soft_limit_tree_node(nid); if (!mctz) return; /* @@ -562,7 +546,7 @@ static void mem_cgroup_update_tree(struct mem_cgroup *memcg, struct page *page) * because their event counter is not touched. */ for (; memcg; memcg = parent_mem_cgroup(memcg)) { - mz = mem_cgroup_page_nodeinfo(memcg, page); + mz = memcg->nodeinfo[nid]; excess = soft_limit_excess(memcg); /* * We have to update the tree if mz is on RB-tree or @@ -852,7 +836,7 @@ static void memcg_check_events(struct mem_cgroup *memcg, struct page *page) MEM_CGROUP_TARGET_SOFTLIMIT); mem_cgroup_threshold(memcg); if (unlikely(do_softlimit)) - mem_cgroup_update_tree(memcg, page); + mem_cgroup_update_tree(memcg, page_to_nid(page)); } } -- cgit v1.2.3