diff options
| author |   Hou Tao <houtao1@huawei.com> | 2021-10-04 17:48:57 +0800 |
|---|---|---|
| committer |   Andrii Nakryiko <andrii@kernel.org> | 2021-10-08 13:22:57 -0700 |
| commit | fa7f17d066bd0996b930b664aa0ed1f213fc1828 (patch) | |
| tree | e2abd0f4d04594fc4204db299cb5b74be0d222f8 /tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h | |
| parent | libbpf: Support detecting and attaching of writable tracepoint program (diff) | |
| download | linux-dev-fa7f17d066bd0996b930b664aa0ed1f213fc1828.tar.xz linux-dev-fa7f17d066bd0996b930b664aa0ed1f213fc1828.zip | |
bpf/selftests: Add test for writable bare tracepoint
Add a writable bare tracepoint in bpf_testmod module, and
trigger its calling when reading /sys/kernel/bpf_testmod
with a specific buffer length. The reading will return
the value in writable context if the early return flag
is enabled in writable context.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211004094857.30868-4-hotforest@gmail.com
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h')
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h index 89c6d58e5dd6..11ee801e75e7 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h @@ -34,6 +34,21 @@ DECLARE_TRACE(bpf_testmod_test_write_bare, TP_ARGS(task, ctx) ); +#undef BPF_TESTMOD_DECLARE_TRACE +#ifdef DECLARE_TRACE_WRITABLE +#define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \ + DECLARE_TRACE_WRITABLE(call, PARAMS(proto), PARAMS(args), size) +#else +#define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \ + DECLARE_TRACE(call, PARAMS(proto), PARAMS(args)) +#endif + +BPF_TESTMOD_DECLARE_TRACE(bpf_testmod_test_writable_bare, + TP_PROTO(struct bpf_testmod_test_writable_ctx *ctx), + TP_ARGS(ctx), + sizeof(struct bpf_testmod_test_writable_ctx) +); + #endif /* _BPF_TESTMOD_EVENTS_H */ #undef TRACE_INCLUDE_PATH |