From: Roman Gushchin <guro@fb.com>
To: <bpf@vger.kernel.org>
Cc: <ast@kernel.org>, <daniel@iogearbox.net>,
<netdev@vger.kernel.org>, <andrii@kernel.org>,
<akpm@linux-foundation.org>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>, <kernel-team@fb.com>
Subject: [PATCH v6 23/34] bpf: eliminate rlimit-based memory accounting for hashtab maps
Date: Mon, 16 Nov 2020 18:55:18 -0800 [thread overview]
Message-ID: <20201117025529.1034387-24-guro@fb.com> (raw)
In-Reply-To: <20201117025529.1034387-1-guro@fb.com>
Do not use rlimit-based memory accounting for hashtab maps.
It has been replaced with the memcg-based memory accounting.
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
---
kernel/bpf/hashtab.c | 19 +------------------
1 file changed, 1 insertion(+), 18 deletions(-)
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c
index d1fa61ab7c76..2ec635b76b33 100644
--- a/kernel/bpf/hashtab.c
+++ b/kernel/bpf/hashtab.c
@@ -443,7 +443,6 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
bool prealloc = !(attr->map_flags & BPF_F_NO_PREALLOC);
struct bpf_htab *htab;
int err, i;
- u64 cost;
htab = kzalloc(sizeof(*htab), GFP_USER | __GFP_ACCOUNT);
if (!htab)
@@ -481,26 +480,12 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
htab->n_buckets > U32_MAX / sizeof(struct bucket))
goto free_htab;
- cost = (u64) htab->n_buckets * sizeof(struct bucket) +
- (u64) htab->elem_size * htab->map.max_entries;
-
- if (percpu)
- cost += (u64) round_up(htab->map.value_size, 8) *
- num_possible_cpus() * htab->map.max_entries;
- else
- cost += (u64) htab->elem_size * num_possible_cpus();
-
- /* if map size is larger than memlock limit, reject it */
- err = bpf_map_charge_init(&htab->map.memory, cost);
- if (err)
- goto free_htab;
-
err = -ENOMEM;
htab->buckets = bpf_map_area_alloc(htab->n_buckets *
sizeof(struct bucket),
htab->map.numa_node);
if (!htab->buckets)
- goto free_charge;
+ goto free_htab;
for (i = 0; i < HASHTAB_MAP_LOCK_COUNT; i++) {
htab->map_locked[i] = __alloc_percpu_gfp(sizeof(int),
@@ -539,8 +524,6 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
for (i = 0; i < HASHTAB_MAP_LOCK_COUNT; i++)
free_percpu(htab->map_locked[i]);
bpf_map_area_free(htab->buckets);
-free_charge:
- bpf_map_charge_finish(&htab->map.memory);
free_htab:
lockdep_unregister_key(&htab->lockdep_key);
kfree(htab);
--
2.26.2
next prev parent reply other threads:[~2020-11-17 2:56 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-17 2:54 [PATCH v6 00/34] bpf: switch to memcg-based memory accounting Roman Gushchin
2020-11-17 2:54 ` [PATCH v6 01/34] mm: memcontrol: use helpers to read page's memcg data Roman Gushchin
2020-11-17 2:54 ` [PATCH v6 02/34] mm: memcontrol/slab: use helpers to access slab page's memcg_data Roman Gushchin
2020-11-17 2:54 ` [PATCH v6 03/34] mm: introduce page memcg flags Roman Gushchin
2020-11-17 2:54 ` [PATCH v6 04/34] mm: convert page kmemcg type to a page memcg flag Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 05/34] bpf: memcg-based memory accounting for bpf progs Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 06/34] bpf: prepare for memcg-based memory accounting for bpf maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 07/34] bpf: " Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 08/34] bpf: refine memcg-based memory accounting for arraymap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 09/34] bpf: refine memcg-based memory accounting for cpumap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 10/34] bpf: memcg-based memory accounting for cgroup storage maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 11/34] bpf: refine memcg-based memory accounting for devmap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 12/34] bpf: refine memcg-based memory accounting for hashtab maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 13/34] bpf: memcg-based memory accounting for lpm_trie maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 14/34] bpf: memcg-based memory accounting for bpf ringbuffer Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 15/34] bpf: memcg-based memory accounting for bpf local storage maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 16/34] bpf: refine memcg-based memory accounting for sockmap and sockhash maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 17/34] bpf: refine memcg-based memory accounting for xskmap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 18/34] bpf: eliminate rlimit-based memory accounting for arraymap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 19/34] bpf: eliminate rlimit-based memory accounting for bpf_struct_ops maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 20/34] bpf: eliminate rlimit-based memory accounting for cpumap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 21/34] bpf: eliminate rlimit-based memory accounting for cgroup storage maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 22/34] bpf: eliminate rlimit-based memory accounting for devmap maps Roman Gushchin
2020-11-17 2:55 ` Roman Gushchin [this message]
2020-11-17 2:55 ` [PATCH v6 24/34] bpf: eliminate rlimit-based memory accounting for lpm_trie maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 25/34] bpf: eliminate rlimit-based memory accounting for queue_stack_maps maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 26/34] bpf: eliminate rlimit-based memory accounting for reuseport_array maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 27/34] bpf: eliminate rlimit-based memory accounting for bpf ringbuffer Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 28/34] bpf: eliminate rlimit-based memory accounting for sockmap and sockhash maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 29/34] bpf: eliminate rlimit-based memory accounting for stackmap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 30/34] bpf: eliminate rlimit-based memory accounting for xskmap maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 31/34] bpf: eliminate rlimit-based memory accounting for bpf local storage maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 32/34] bpf: eliminate rlimit-based memory accounting infra for bpf maps Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 33/34] bpf: eliminate rlimit-based memory accounting for bpf progs Roman Gushchin
2020-11-17 2:55 ` [PATCH v6 34/34] bpf: samples: do not touch RLIMIT_MEMLOCK Roman Gushchin
2020-11-17 3:42 ` [PATCH v6 00/34] bpf: switch to memcg-based memory accounting Roman Gushchin
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