Merge branch 'bpf-add-memory-usage-for-arena-and-selftest'

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Jiayuan Chen says:

====================
bpf: Add memory usage for arena and selftest

arena is the only map type whose map_mem_usage() still returns 0, so
bpftool and fdinfo always show 0 memlock for it no matter how many pages
it holds. This series adds the accounting, runs the arena selftests
serially so they don't OOM a small CI VM, and adds a test for it.

v1 -> v2:
- split the scratch_page -> arena refactor into a prep patch (no
  functional change)
- use WRITE_ONCE() for nr_pages to pair with the lockless reader
- reword the "run serially" commit message
- selftest: alloc prog returns 0 so the failure check is reached

v1: https://lore.kernel.org/bpf/20260716142746.8794-1-jiayuan.chen@linux.dev/
====================

Link: https://patch.msgid.link/20260717114117.350851-1-jiayuan.chen@linux.dev
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

...

This commit is contained in:

Kumar Kartikeya Dwivedi 2026-07-19 17:56:11 +02:00

parent ecf11bc5f5 29e4bcf126

commit fa44402059

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27

kernel/bpf/arena.c

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2

tools/testing/selftests/bpf/prog_tests/arena_atomics.c

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2

tools/testing/selftests/bpf/prog_tests/arena_direct_value.c

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tools/testing/selftests/bpf/prog_tests/arena_htab.c

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tools/testing/selftests/bpf/prog_tests/arena_list.c

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122

tools/testing/selftests/bpf/prog_tests/arena_mem_usage.c

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tools/testing/selftests/bpf/prog_tests/arena_spin_lock.c

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tools/testing/selftests/bpf/prog_tests/arena_strsearch.c

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tools/testing/selftests/bpf/prog_tests/libarena.c

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tools/testing/selftests/bpf/prog_tests/libarena_asan.c

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40

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

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