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bpf: group memory related fields in struct bpf_map_memory

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Group "user" and "pages" fields of bpf_map into the bpf_map_memory
structure. Later it can be extended with "memcg" and other related
information.

The main reason for a such change (beside cosmetics) is to pass
bpf_map_memory structure to charging functions before the actual
allocation of bpf_map.

Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Roman Gushchin 2019-05-29 18:03:57 -07:00 • committed by Alexei Starovoitov
parent d50836cda6
commit 3539b96e04
14 changed files with 36 additions and 31 deletions
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4
kernel/bpf/devmap.c
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@ -111,10 +111,10 @@ static struct bpf_map *dev_map_alloc(union bpf_attr *attr)
if (cost >= U32_MAX - PAGE_SIZE)
goto free_dtab;
dtab->map.pages = round_up(cost, PAGE_SIZE) >> PAGE_SHIFT;
dtab->map.memory.pages = round_up(cost, PAGE_SIZE) >> PAGE_SHIFT;
/* if map size is larger than memlock limit, reject it early */
err = bpf_map_precharge_memlock(dtab->map.pages);
err = bpf_map_precharge_memlock(dtab->map.memory.pages);
if (err)
goto free_dtab;