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Age	Commit message (Collapse)	Author
2025-01-08	selftests/bpf: Add kprobe session recursion check test	Jiri Olsa
	Adding kprobe.session probe to bpf_kfunc_common_test that misses bpf program execution due to recursion check and making sure it increases the program missed count properly. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20250106175048.1443905-2-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-12-06	selftests/bpf: Consolidate kernel modules into common directory	Toke Høiland-Jørgensen
	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
2023-09-25	selftests/bpf: Add test for recursion counts of perf event link kprobe	Jiri Olsa
	Adding selftest that puts kprobe.multi on bpf_fentry_test1 that calls bpf_kfunc_common_test kfunc which has 3 perf event kprobes and 1 kprobe.multi attached. Because fprobe (kprobe.multi attach layear) does not have strict recursion check the kprobe's bpf_prog_active check is hit for test2-5. Disabling this test for arm64, because there's no fprobe support yet. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Song Liu <song@kernel.org> Reviewed-by: Song Liu <song@kernel.org> Acked-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/bpf/20230920213145.1941596-9-jolsa@kernel.org