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| author |   Roman Gushchin <roman.gushchin@linux.dev> | 2024-06-28 21:03:10 +0000 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2024-07-04 18:05:55 -0700 |
| commit | 773e9ae77fe777ac09739d8c32b32fff147f2d66 (patch) | |
| tree | e928bad7c1f5c1966dc0cf8d94e7ad857158180b /mm/memcontrol.c | |
| parent | mm: memcg: move memcg_account_kmem() to memcontrol-v1.c (diff) | |
| download | linux-rng-773e9ae77fe777ac09739d8c32b32fff147f2d66.tar.xz linux-rng-773e9ae77fe777ac09739d8c32b32fff147f2d66.zip | |
mm: memcg: factor out legacy socket memory accounting code
Move out the legacy cgroup v1 socket memory accounting code into
mm/memcontrol-v1.c.
This commit introduces three new functions: memcg1_tcpmem_active(),
memcg1_charge_skmem() and memcg1_uncharge_skmem(), which contain all
cgroup v1-specific code and become trivial if CONFIG_MEMCG_V1 isn't set.
Note, that !!memcg->tcpmem_pressure check in
mem_cgroup_under_socket_pressure() can't be easily moved into
memcontrol-v1.h without including memcontrol-v1.h from memcontrol.h which
isn't a good idea, so it's better to just #ifdef it.
Link: https://lkml.kernel.org/r/20240628210317.272856-3-roman.gushchin@linux.dev
Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/memcontrol.c | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 03d42b9356d1..8954e323cefb 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3753,7 +3753,7 @@ static void mem_cgroup_css_free(struct cgroup_subsys_state *css) if (cgroup_subsys_on_dfl(memory_cgrp_subsys) && !cgroup_memory_nosocket) static_branch_dec(&memcg_sockets_enabled_key); - if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_active) + if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg1_tcpmem_active(memcg)) static_branch_dec(&memcg_sockets_enabled_key); #if defined(CONFIG_MEMCG_KMEM) @@ -4979,7 +4979,7 @@ void mem_cgroup_sk_alloc(struct sock *sk) memcg = mem_cgroup_from_task(current); if (mem_cgroup_is_root(memcg)) goto out; - if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && !memcg->tcpmem_active) + if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && !memcg1_tcpmem_active(memcg)) goto out; if (css_tryget(&memcg->css)) sk->sk_memcg = memcg; @@ -5005,20 +5005,8 @@ void mem_cgroup_sk_free(struct sock *sk) bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages, gfp_t gfp_mask) { - if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) { - struct page_counter *fail; - - if (page_counter_try_charge(&memcg->tcpmem, nr_pages, &fail)) { - memcg->tcpmem_pressure = 0; - return true; - } - memcg->tcpmem_pressure = 1; - if (gfp_mask & __GFP_NOFAIL) { - page_counter_charge(&memcg->tcpmem, nr_pages); - return true; - } - return false; - } + if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) + return memcg1_charge_skmem(memcg, nr_pages, gfp_mask); if (try_charge(memcg, gfp_mask, nr_pages) == 0) { mod_memcg_state(memcg, MEMCG_SOCK, nr_pages); @@ -5036,7 +5024,7 @@ bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages, void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages) { if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) { - page_counter_uncharge(&memcg->tcpmem, nr_pages); + memcg1_uncharge_skmem(memcg, nr_pages); return; } |