bpf: Prepare bpf_mem_alloc to be used by sleepable bpf programs.

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Use call_rcu_tasks_trace() to wait for sleepable progs to finish.
Then use call_rcu() to wait for normal progs to finish
and finally do free_one() on each element when freeing objects
into global memory pool.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220902211058.60789-14-alexei.starovoitov@gmail.com

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Alexei Starovoitov 2022-09-02 14:10:55 -07:00 • committed by Daniel Borkmann

parent 96da3f7d48

commit dccb4a9013

1 changed files with 14 additions and 1 deletions

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kernel/bpf/memalloc.c

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