bpf: Run sleepable programs with migration disabled

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In older non-RT kernels migrate_disable() was the same as preempt_disable().
Since commit 74d862b682 ("sched: Make migrate_disable/enable() independent of RT")
migrate_disable() is real and doesn't prevent sleeping.

Running sleepable programs with migration disabled allows to add support for
program stats and per-cpu maps later.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/bpf/20210210033634.62081-3-alexei.starovoitov@gmail.com

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Alexei Starovoitov 2021-02-09 19:36:27 -08:00 • committed by Daniel Borkmann

parent 700d4796ef

commit 031d6e02dd

1 changed files with 2 additions and 0 deletions

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kernel/bpf/trampoline.c

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