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author | Andrii Nakryiko <andriin@fb.com> | 2020-02-29 15:11:11 -0800 |
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committer | Alexei Starovoitov <ast@kernel.org> | 2020-03-02 16:25:14 -0800 |
commit | 396f544ed5e5a9c40de5663b774f643644cba059 (patch) | |
tree | 33208526d4177af87a61d5f2fdc6fdc521ccc8b9 /tools/testing/selftests/bpf/progs/test_perf_buffer.c | |
parent | fd56e0058412fb542db0e9556f425747cf3f8366 (diff) |
selftests/bpf: Fix BPF_KRETPROBE macro and use it in attach_probe test
For kretprobes, there is no point in capturing input arguments from pt_regs,
as they are going to be, most probably, clobbered by the time probed kernel
function returns. So switch BPF_KRETPROBE to accept zero or one argument
(optional return result).
Fixes: ac065870d928 ("selftests/bpf: Add BPF_PROG, BPF_KPROBE, and BPF_KRETPROBE macros")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200229231112.1240137-4-andriin@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_perf_buffer.c')
0 files changed, 0 insertions, 0 deletions