diff options
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 54 |
1 files changed, 16 insertions, 38 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index e79cb59552d9..10a9b554d69f 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1669,6 +1669,8 @@ static enum oom_status mem_cgroup_oom(struct mem_cgroup *memcg, gfp_t mask, int if (order > PAGE_ALLOC_COSTLY_ORDER) return OOM_SKIPPED; + memcg_memory_event(memcg, MEMCG_OOM); + /* * We are in the middle of the charge context here, so we * don't want to block when potentially sitting on a callstack @@ -2250,8 +2252,6 @@ retry: if (fatal_signal_pending(current)) goto force; - memcg_memory_event(mem_over_limit, MEMCG_OOM); - /* * keep retrying as long as the memcg oom killer is able to make * a forward progress or bypass the charge if the oom killer @@ -2460,7 +2460,7 @@ static void memcg_kmem_cache_create_func(struct work_struct *w) /* * Enqueue the creation of a per-memcg kmem_cache. */ -static void __memcg_schedule_kmem_cache_create(struct mem_cgroup *memcg, +static void memcg_schedule_kmem_cache_create(struct mem_cgroup *memcg, struct kmem_cache *cachep) { struct memcg_kmem_cache_create_work *cw; @@ -2478,25 +2478,6 @@ static void __memcg_schedule_kmem_cache_create(struct mem_cgroup *memcg, queue_work(memcg_kmem_cache_wq, &cw->work); } -static void memcg_schedule_kmem_cache_create(struct mem_cgroup *memcg, - struct kmem_cache *cachep) -{ - /* - * We need to stop accounting when we kmalloc, because if the - * corresponding kmalloc cache is not yet created, the first allocation - * in __memcg_schedule_kmem_cache_create will recurse. - * - * However, it is better to enclose the whole function. Depending on - * the debugging options enabled, INIT_WORK(), for instance, can - * trigger an allocation. This too, will make us recurse. Because at - * this point we can't allow ourselves back into memcg_kmem_get_cache, - * the safest choice is to do it like this, wrapping the whole function. - */ - current->memcg_kmem_skip_account = 1; - __memcg_schedule_kmem_cache_create(memcg, cachep); - current->memcg_kmem_skip_account = 0; -} - static inline bool memcg_kmem_bypass(void) { if (in_interrupt() || !current->mm || (current->flags & PF_KTHREAD)) @@ -2531,9 +2512,6 @@ struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep) if (memcg_kmem_bypass()) return cachep; - if (current->memcg_kmem_skip_account) - return cachep; - memcg = get_mem_cgroup_from_current(); kmemcg_id = READ_ONCE(memcg->kmemcg_id); if (kmemcg_id < 0) @@ -4321,14 +4299,12 @@ static void mem_cgroup_id_remove(struct mem_cgroup *memcg) static void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n) { - VM_BUG_ON(atomic_read(&memcg->id.ref) <= 0); - atomic_add(n, &memcg->id.ref); + refcount_add(n, &memcg->id.ref); } static void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n) { - VM_BUG_ON(atomic_read(&memcg->id.ref) < n); - if (atomic_sub_and_test(n, &memcg->id.ref)) { + if (refcount_sub_and_test(n, &memcg->id.ref)) { mem_cgroup_id_remove(memcg); /* Memcg ID pins CSS */ @@ -4545,7 +4521,7 @@ static int mem_cgroup_css_online(struct cgroup_subsys_state *css) } /* Online state pins memcg ID, memcg ID pins CSS */ - atomic_set(&memcg->id.ref, 1); + refcount_set(&memcg->id.ref, 1); css_get(css); return 0; } @@ -4573,6 +4549,8 @@ static void mem_cgroup_css_offline(struct cgroup_subsys_state *css) memcg_offline_kmem(memcg); wb_memcg_offline(memcg); + drain_all_stock(memcg); + mem_cgroup_id_put(memcg); } @@ -5595,6 +5573,13 @@ static int memory_stat_show(struct seq_file *m, void *v) seq_printf(m, "pgfault %lu\n", acc.events[PGFAULT]); seq_printf(m, "pgmajfault %lu\n", acc.events[PGMAJFAULT]); + seq_printf(m, "workingset_refault %lu\n", + acc.stat[WORKINGSET_REFAULT]); + seq_printf(m, "workingset_activate %lu\n", + acc.stat[WORKINGSET_ACTIVATE]); + seq_printf(m, "workingset_nodereclaim %lu\n", + acc.stat[WORKINGSET_NODERECLAIM]); + seq_printf(m, "pgrefill %lu\n", acc.events[PGREFILL]); seq_printf(m, "pgscan %lu\n", acc.events[PGSCAN_KSWAPD] + acc.events[PGSCAN_DIRECT]); @@ -5605,13 +5590,6 @@ static int memory_stat_show(struct seq_file *m, void *v) seq_printf(m, "pglazyfree %lu\n", acc.events[PGLAZYFREE]); seq_printf(m, "pglazyfreed %lu\n", acc.events[PGLAZYFREED]); - seq_printf(m, "workingset_refault %lu\n", - acc.stat[WORKINGSET_REFAULT]); - seq_printf(m, "workingset_activate %lu\n", - acc.stat[WORKINGSET_ACTIVATE]); - seq_printf(m, "workingset_nodereclaim %lu\n", - acc.stat[WORKINGSET_NODERECLAIM]); - return 0; } @@ -6377,7 +6355,7 @@ subsys_initcall(mem_cgroup_init); #ifdef CONFIG_MEMCG_SWAP static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg) { - while (!atomic_inc_not_zero(&memcg->id.ref)) { + while (!refcount_inc_not_zero(&memcg->id.ref)) { /* * The root cgroup cannot be destroyed, so it's refcount must * always be >= 1. |