93bc28d859
Create and load a struct_ops map with a large number of struct_ops programs to generate trampolines taking a size over multiple pages. The map includes 40 programs. Their trampolines takes 6.6k+, more than 1.5 pages, on x86. Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Link: https://lore.kernel.org/r/20240224223418.526631-4-thinker.li@gmail.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
102 lines
1.4 KiB
C
102 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include "../bpf_testmod/bpf_testmod.h"
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char _license[] SEC("license") = "GPL";
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#define TRAMP(x) \
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SEC("struct_ops/tramp_" #x) \
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int BPF_PROG(tramp_ ## x, int a) \
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{ \
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return a; \
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}
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TRAMP(1)
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TRAMP(2)
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TRAMP(3)
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TRAMP(4)
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TRAMP(5)
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TRAMP(6)
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TRAMP(7)
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TRAMP(8)
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TRAMP(9)
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TRAMP(10)
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TRAMP(11)
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TRAMP(12)
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TRAMP(13)
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TRAMP(14)
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TRAMP(15)
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TRAMP(16)
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TRAMP(17)
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TRAMP(18)
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TRAMP(19)
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TRAMP(20)
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TRAMP(21)
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TRAMP(22)
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TRAMP(23)
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TRAMP(24)
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TRAMP(25)
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TRAMP(26)
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TRAMP(27)
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TRAMP(28)
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TRAMP(29)
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TRAMP(30)
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TRAMP(31)
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TRAMP(32)
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TRAMP(33)
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TRAMP(34)
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TRAMP(35)
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TRAMP(36)
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TRAMP(37)
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TRAMP(38)
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TRAMP(39)
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TRAMP(40)
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#define F_TRAMP(x) .tramp_ ## x = (void *)tramp_ ## x
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SEC(".struct_ops.link")
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struct bpf_testmod_ops multi_pages = {
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F_TRAMP(1),
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F_TRAMP(2),
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F_TRAMP(3),
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F_TRAMP(4),
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F_TRAMP(5),
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F_TRAMP(6),
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F_TRAMP(7),
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F_TRAMP(8),
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F_TRAMP(9),
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F_TRAMP(10),
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F_TRAMP(11),
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F_TRAMP(12),
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F_TRAMP(13),
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F_TRAMP(14),
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F_TRAMP(15),
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F_TRAMP(16),
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F_TRAMP(17),
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F_TRAMP(18),
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F_TRAMP(19),
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F_TRAMP(20),
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F_TRAMP(21),
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F_TRAMP(22),
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F_TRAMP(23),
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F_TRAMP(24),
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F_TRAMP(25),
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F_TRAMP(26),
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F_TRAMP(27),
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F_TRAMP(28),
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F_TRAMP(29),
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F_TRAMP(30),
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F_TRAMP(31),
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F_TRAMP(32),
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F_TRAMP(33),
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F_TRAMP(34),
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F_TRAMP(35),
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F_TRAMP(36),
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F_TRAMP(37),
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F_TRAMP(38),
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F_TRAMP(39),
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F_TRAMP(40),
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};
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