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| author | Johannes Weiner <hannes@cmpxchg.org> | 2016-01-20 15:02:41 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-20 17:09:18 -0800 |
| commit | 489c2a20a414351fe0813a727c34600c0f7292ae (patch) | |
| tree | 3e1417700db70366ac8d9a73b38958c3904732db /mm | |
| parent | 04823c833b3eaef7816e28e3727124394f6bb3c3 (diff) | |
| download | linux-489c2a20a414351fe0813a727c34600c0f7292ae.tar.gz linux-489c2a20a414351fe0813a727c34600c0f7292ae.tar.bz2 linux-489c2a20a414351fe0813a727c34600c0f7292ae.zip | |
mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM
Let the user know that CONFIG_MEMCG_KMEM does not apply to the cgroup2
interface. This also makes legacy-only code sections stand out better.
[arnd@arndb.de: mm: memcontrol: only manage socket pressure for CONFIG_INET]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 18 | ||||
| -rw-r--r-- | mm/vmpressure.c | 2 |
2 files changed, 11 insertions, 9 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 2239e6dd4d4c..92e8ab67b6df 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3001,7 +3001,7 @@ static void memcg_free_kmem(struct mem_cgroup *memcg) } #endif /* !CONFIG_SLOB */ -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG_LEGACY_KMEM static int memcg_update_kmem_limit(struct mem_cgroup *memcg, unsigned long limit) { @@ -3025,7 +3025,7 @@ static int memcg_update_kmem_limit(struct mem_cgroup *memcg, { return -EINVAL; } -#endif /* CONFIG_MEMCG_KMEM */ +#endif /* CONFIG_MEMCG_LEGACY_KMEM */ /* @@ -4039,7 +4039,7 @@ static struct cftype mem_cgroup_legacy_files[] = { .seq_show = memcg_numa_stat_show, }, #endif -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG_LEGACY_KMEM { .name = "kmem.limit_in_bytes", .private = MEMFILE_PRIVATE(_KMEM, RES_LIMIT), @@ -4266,13 +4266,13 @@ mem_cgroup_css_online(struct cgroup_subsys_state *css) if (ret) return ret; -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_INET +#ifdef CONFIG_MEMCG_LEGACY_KMEM ret = tcp_init_cgroup(memcg); if (ret) return ret; #endif -#ifdef CONFIG_INET if (cgroup_subsys_on_dfl(memory_cgrp_subsys) && !cgroup_memory_nosocket) static_branch_inc(&memcg_sockets_enabled_key); #endif @@ -4329,7 +4329,7 @@ static void mem_cgroup_css_free(struct cgroup_subsys_state *css) memcg_free_kmem(memcg); -#ifdef CONFIG_MEMCG_KMEM +#if defined(CONFIG_MEMCG_LEGACY_KMEM) && defined(CONFIG_INET) tcp_destroy_cgroup(memcg); #endif @@ -5558,7 +5558,7 @@ void sock_update_memcg(struct sock *sk) memcg = mem_cgroup_from_task(current); if (memcg == root_mem_cgroup) goto out; -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG_LEGACY_KMEM if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && !memcg->tcp_mem.active) goto out; #endif @@ -5587,7 +5587,7 @@ bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages) { gfp_t gfp_mask = GFP_KERNEL; -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG_LEGACY_KMEM if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) { struct page_counter *counter; @@ -5619,7 +5619,7 @@ 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) { -#ifdef CONFIG_MEMCG_KMEM +#ifdef CONFIG_MEMCG_LEGACY_KMEM if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) { page_counter_uncharge(&memcg->tcp_mem.memory_allocated, nr_pages); diff --git a/mm/vmpressure.c b/mm/vmpressure.c index 9a6c0704211c..89b1d441af4b 100644 --- a/mm/vmpressure.c +++ b/mm/vmpressure.c @@ -275,6 +275,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree, level = vmpressure_calc_level(scanned, reclaimed); +#ifdef CONFIG_INET if (level > VMPRESSURE_LOW) { /* * Let the socket buffer allocator know that @@ -286,6 +287,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree, */ memcg->socket_pressure = jiffies + HZ; } +#endif } } |