bpf: Eliminate rlimit-based memory accounting infra for bpf maps

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Remove rlimit-based accounting infrastructure code, which is not used
anymore.

To provide a backward compatibility, use an approximation of the
bpf map memory footprint as a "memlock" value, available to a user
via map info. The approximation is based on the maximal number of
elements and key and value sizes.

Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20201201215900.3569844-33-guro@fb.com

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Roman Gushchin 2020-12-01 13:58:58 -08:00 • committed by Alexei Starovoitov

parent ab31be378a

commit 80ee81e040

4 changed files with 17 additions and 100 deletions

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12

include/linux/bpf.h

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96

kernel/bpf/syscall.c

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2

tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c

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7

tools/testing/selftests/bpf/progs/map_ptr_kern.c

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