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d6212d82bf
The selftests build four kernel modules which use copy-pasted Makefile targets. This is a bit messy, and doesn't scale so well when we add more modules, so let's consolidate these rules into a single rule generated for each module name, and move the module sources into a single directory. To avoid parallel builds of the different modules stepping on each other's toes during the 'modpost' phase of the Kbuild 'make modules', the module files should really be a grouped target. However, make only added explicit support for grouped targets in version 4.3, which is newer than the minimum version supported by the kernel. However, make implicitly treats pattern matching rules with multiple targets as a grouped target, so we can work around this by turning the rule into a pattern matching target. We do this by replacing '.ko' with '%ko' in the targets with subst(). Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Viktor Malik <vmalik@redhat.com> Link: https://lore.kernel.org/bpf/20241204-bpf-selftests-mod-compile-v5-1-b96231134a49@redhat.com
90 lines
1.8 KiB
C
90 lines
1.8 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 "../test_kmods/bpf_testmod.h"
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char _license[] SEC("license") = "GPL";
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int test_1_result = 0;
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int test_2_result = 0;
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SEC("struct_ops/test_1")
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int BPF_PROG(test_1)
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{
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test_1_result = 0xdeadbeef;
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return 0;
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}
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SEC("struct_ops/test_2")
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void BPF_PROG(test_2, int a, int b)
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{
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test_2_result = a + b;
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}
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SEC("?struct_ops/test_3")
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int BPF_PROG(test_3, int a, int b)
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{
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test_2_result = a + b + 3;
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return a + b + 3;
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}
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SEC(".struct_ops.link")
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struct bpf_testmod_ops testmod_1 = {
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.test_1 = (void *)test_1,
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.test_2 = (void *)test_2,
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.data = 0x1,
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};
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SEC("struct_ops/test_2")
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void BPF_PROG(test_2_v2, int a, int b)
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{
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test_2_result = a * b;
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}
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struct bpf_testmod_ops___v2 {
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int (*test_1)(void);
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void (*test_2)(int a, int b);
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int (*test_maybe_null)(int dummy, struct task_struct *task);
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};
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SEC(".struct_ops.link")
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struct bpf_testmod_ops___v2 testmod_2 = {
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.test_1 = (void *)test_1,
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.test_2 = (void *)test_2_v2,
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};
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struct bpf_testmod_ops___zeroed {
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int (*test_1)(void);
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void (*test_2)(int a, int b);
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int (*test_maybe_null)(int dummy, struct task_struct *task);
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void (*zeroed_op)(int a, int b);
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int zeroed;
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};
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SEC("struct_ops/test_3")
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int BPF_PROG(zeroed_op)
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{
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return 1;
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}
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SEC(".struct_ops.link")
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struct bpf_testmod_ops___zeroed testmod_zeroed = {
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.test_1 = (void *)test_1,
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.test_2 = (void *)test_2_v2,
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.zeroed_op = (void *)zeroed_op,
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};
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struct bpf_testmod_ops___incompatible {
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int (*test_1)(void);
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void (*test_2)(int *a);
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int data;
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};
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SEC(".struct_ops.link")
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struct bpf_testmod_ops___incompatible testmod_incompatible = {
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.test_1 = (void *)test_1,
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.test_2 = (void *)test_2,
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.data = 3,
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};
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