btf: Add a new kfunc flag which allows to mark a function to be sleepable

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This allows to declare a kfunc as sleepable and prevents its use in
a non sleepable program.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Co-developed-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Hao Luo <haoluo@google.com>
Link: https://lore.kernel.org/r/20220805214821.1058337-2-haoluo@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Benjamin Tissoires 2022-08-05 14:48:14 -07:00 • committed by Alexei Starovoitov

parent ca34ce29fc

commit fa96b24204

3 changed files with 16 additions and 0 deletions

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6

Documentation/bpf/kfuncs.rst

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1

include/linux/btf.h

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9

kernel/bpf/btf.c

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