bpf: wq: add bpf_wq_set_callback_impl

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To support sleepable async callbacks, we need to tell push_async_cb()
whether the cb is sleepable or not.

The verifier now detects that we are in bpf_wq_set_callback_impl and
can allow a sleepable callback to happen.

Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Link: https://lore.kernel.org/r/20240420-bpf_wq-v2-13-6c986a5a741f@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Benjamin Tissoires 2024-04-20 11:09:13 +02:00 • committed by Alexei Starovoitov

parent e3d9eac99a

commit 81f1d7a583

3 changed files with 70 additions and 6 deletions

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1

include/linux/bpf_verifier.h

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15

kernel/bpf/helpers.c

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60

kernel/bpf/verifier.c

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