From: Roman Gushchin <guro@fb.com>
To: <bpf@vger.kernel.org>
Cc: <netdev@vger.kernel.org>, Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>,
<linux-kernel@vger.kernel.org>, Roman Gushchin <guro@fb.com>,
Song Liu <songliubraving@fb.com>
Subject: [PATCH bpf-next v3 13/29] bpf: eliminate rlimit-based memory accounting for arraymap maps
Date: Thu, 30 Jul 2020 14:22:54 -0700 [thread overview]
Message-ID: <20200730212310.2609108-14-guro@fb.com> (raw)
In-Reply-To: <20200730212310.2609108-1-guro@fb.com>
Do not use rlimit-based memory accounting for arraymap 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/arraymap.c | 24 ++++--------------------
1 file changed, 4 insertions(+), 20 deletions(-)
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 9597fecff8da..41581c38b31d 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -75,11 +75,10 @@ int array_map_alloc_check(union bpf_attr *attr)
static struct bpf_map *array_map_alloc(union bpf_attr *attr)
{
bool percpu = attr->map_type == BPF_MAP_TYPE_PERCPU_ARRAY;
- int ret, numa_node = bpf_map_attr_numa_node(attr);
+ int numa_node = bpf_map_attr_numa_node(attr);
u32 elem_size, index_mask, max_entries;
bool bypass_spec_v1 = bpf_bypass_spec_v1();
- u64 cost, array_size, mask64;
- struct bpf_map_memory mem;
+ u64 array_size, mask64;
struct bpf_array *array;
elem_size = round_up(attr->value_size, 8);
@@ -120,44 +119,29 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr)
}
}
- /* make sure there is no u32 overflow later in round_up() */
- cost = array_size;
- if (percpu)
- cost += (u64)attr->max_entries * elem_size * num_possible_cpus();
-
- ret = bpf_map_charge_init(&mem, cost);
- if (ret < 0)
- return ERR_PTR(ret);
-
/* allocate all map elements and zero-initialize them */
if (attr->map_flags & BPF_F_MMAPABLE) {
void *data;
/* kmalloc'ed memory can't be mmap'ed, use explicit vmalloc */
data = bpf_map_area_mmapable_alloc(array_size, numa_node);
- if (!data) {
- bpf_map_charge_finish(&mem);
+ if (!data)
return ERR_PTR(-ENOMEM);
- }
array = data + PAGE_ALIGN(sizeof(struct bpf_array))
- offsetof(struct bpf_array, value);
} else {
array = bpf_map_area_alloc(array_size, numa_node);
}
- if (!array) {
- bpf_map_charge_finish(&mem);
+ if (!array)
return ERR_PTR(-ENOMEM);
- }
array->index_mask = index_mask;
array->map.bypass_spec_v1 = bypass_spec_v1;
/* copy mandatory map attributes */
bpf_map_init_from_attr(&array->map, attr);
- bpf_map_charge_move(&array->map.memory, &mem);
array->elem_size = elem_size;
if (percpu && bpf_array_alloc_percpu(array)) {
- bpf_map_charge_finish(&array->map.memory);
bpf_map_area_free(array);
return ERR_PTR(-ENOMEM);
}
--
2.26.2
next prev parent reply other threads:[~2020-07-30 21:24 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 21:22 [PATCH bpf-next v3 00/29] bpf: switch to memcg-based memory accounting Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 01/29] bpf: memcg-based memory accounting for bpf progs Roman Gushchin
2020-07-31 22:48 ` Song Liu
2020-07-30 21:22 ` [PATCH bpf-next v3 02/29] bpf: memcg-based memory accounting for bpf maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 03/29] bpf: refine memcg-based memory accounting for arraymap maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 04/29] bpf: refine memcg-based memory accounting for cpumap maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 05/29] bpf: memcg-based memory accounting for cgroup storage maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 06/29] bpf: refine memcg-based memory accounting for devmap maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 07/29] bpf: refine memcg-based memory accounting for hashtab maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 08/29] bpf: memcg-based memory accounting for lpm_trie maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 09/29] bpf: memcg-based memory accounting for bpf ringbuffer Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 10/29] bpf: memcg-based memory accounting for socket storage maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 11/29] bpf: refine memcg-based memory accounting for sockmap and sockhash maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 12/29] bpf: refine memcg-based memory accounting for xskmap maps Roman Gushchin
2020-07-30 21:22 ` Roman Gushchin [this message]
2020-07-30 21:22 ` [PATCH bpf-next v3 14/29] bpf: eliminate rlimit-based memory accounting for bpf_struct_ops maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 15/29] bpf: eliminate rlimit-based memory accounting for cpumap maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 16/29] bpf: eliminate rlimit-based memory accounting for cgroup storage maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 17/29] bpf: eliminate rlimit-based memory accounting for devmap maps Roman Gushchin
2020-07-30 21:22 ` [PATCH bpf-next v3 18/29] bpf: eliminate rlimit-based memory accounting for hashtab maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 19/29] bpf: eliminate rlimit-based memory accounting for lpm_trie maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 20/29] bpf: eliminate rlimit-based memory accounting for queue_stack_maps maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 21/29] bpf: eliminate rlimit-based memory accounting for reuseport_array maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 22/29] bpf: eliminate rlimit-based memory accounting for bpf ringbuffer Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 23/29] bpf: eliminate rlimit-based memory accounting for sockmap and sockhash maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 24/29] bpf: eliminate rlimit-based memory accounting for stackmap maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 25/29] bpf: eliminate rlimit-based memory accounting for socket storage maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 26/29] bpf: eliminate rlimit-based memory accounting for xskmap maps Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 27/29] bpf: eliminate rlimit-based memory accounting infra for bpf maps Roman Gushchin
2020-07-31 22:47 ` Song Liu
2020-07-30 21:23 ` [PATCH bpf-next v3 28/29] bpf: eliminate rlimit-based memory accounting for bpf progs Roman Gushchin
2020-07-30 21:23 ` [PATCH bpf-next v3 29/29] bpf: samples: do not touch RLIMIT_MEMLOCK Roman Gushchin
2020-08-03 12:05 ` [PATCH bpf-next v3 00/29] bpf: switch to memcg-based memory accounting Daniel Borkmann
2020-08-03 15:34 ` Roman Gushchin
2020-08-03 16:39 ` Daniel Borkmann
2020-08-03 17:05 ` Roman Gushchin
2020-08-03 18:37 ` Daniel Borkmann
2020-08-03 19:06 ` Roman Gushchin
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