Commit 406a6fa4 authored by Andrii Nakryiko's avatar Andrii Nakryiko Committed by Alexei Starovoitov
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bpf: use bitfields for simple per-subprog bool flags 



We have a bunch of bool flags for each subprog. Instead of wasting bytes
for them, use bitfields instead.

Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Acked-by: default avatarEduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20231204233931.49758-5-andrii@kernel.org


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 1a1ad782

include/linux/bpf_verifier.h

+6 −6
Original line number Diff line number Diff line
@@ -611,12 +611,12 @@ struct bpf_subprog_info { 
	u32 start; /* insn idx of function entry point */

	u32 linfo_idx; /* The idx to the main_prog->aux->linfo */

	u16 stack_depth; /* max. stack depth used by this function */

	bool has_tail_call;

	bool tail_call_reachable;

	bool has_ld_abs;

	bool is_cb;

	bool is_async_cb;

	bool is_exception_cb;

	bool has_tail_call: 1;

	bool tail_call_reachable: 1;

	bool has_ld_abs: 1;

	bool is_cb: 1;

	bool is_async_cb: 1;

	bool is_exception_cb: 1;

};



struct bpf_verifier_env;