diff options
| author | Qais Yousef <qais.yousef@arm.com> | 2021-01-19 12:22:37 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-01-20 14:14:05 -0800 |
| commit | 407be92206d54517765e028c8b79032eb8f8ac86 (patch) | |
| tree | 55a14edc1e68c6e2109cc0872a52b12094d75abd /tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | |
| parent | 6939f4ef16d48f2093f337162cfc041d0e30ed25 (diff) | |
selftests: bpf: Add a new test for bare tracepoints
Reuse module_attach infrastructure to add a new bare tracepoint to check
we can attach to it as a raw tracepoint.
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210119122237.2426878-3-qais.yousef@arm.com
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c')
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index 0b991e115d1f..141d8da687d2 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -31,9 +31,28 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj, EXPORT_SYMBOL(bpf_testmod_test_read); ALLOW_ERROR_INJECTION(bpf_testmod_test_read, ERRNO); +noinline ssize_t +bpf_testmod_test_write(struct file *file, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t len) +{ + struct bpf_testmod_test_write_ctx ctx = { + .buf = buf, + .off = off, + .len = len, + }; + + trace_bpf_testmod_test_write_bare(current, &ctx); + + return -EIO; /* always fail */ +} +EXPORT_SYMBOL(bpf_testmod_test_write); +ALLOW_ERROR_INJECTION(bpf_testmod_test_write, ERRNO); + static struct bin_attribute bin_attr_bpf_testmod_file __ro_after_init = { - .attr = { .name = "bpf_testmod", .mode = 0444, }, + .attr = { .name = "bpf_testmod", .mode = 0666, }, .read = bpf_testmod_test_read, + .write = bpf_testmod_test_write, }; static int bpf_testmod_init(void) |