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author | Jiri Olsa <jolsa@kernel.org> | 2022-10-25 16:41:46 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2022-10-25 20:14:51 +0300 |
commit | fee356ede980b6c2c8db612e18b25738356d6744 (patch) | |
tree | cb9ab605892b9f4cbaee612b3737f7b3dec5a36c /tools/testing/selftests/bpf/bpf_testmod | |
parent | 10705b2b7a8e4eb46ab5bf1b9ee354cb9a929428 (diff) | |
download | linux-fee356ede980b6c2c8db612e18b25738356d6744.tar.xz |
selftests/bpf: Add bpf_testmod_fentry_* functions
Adding 3 bpf_testmod_fentry_* functions to have a way to test
kprobe multi link on kernel module. They follow bpf_fentry_test*
functions prototypes/code.
Adding equivalent functions to all bpf_fentry_test* does not
seems necessary at the moment, could be added later.
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20221025134148.3300700-7-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_testmod')
-rw-r--r-- | tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index a6021d6117b5..5085fea3cac5 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -128,6 +128,23 @@ __weak noinline struct file *bpf_testmod_return_ptr(int arg) } } +noinline int bpf_testmod_fentry_test1(int a) +{ + return a + 1; +} + +noinline int bpf_testmod_fentry_test2(int a, u64 b) +{ + return a + b; +} + +noinline int bpf_testmod_fentry_test3(char a, int b, u64 c) +{ + return a + b + c; +} + +int bpf_testmod_fentry_ok; + noinline ssize_t bpf_testmod_test_read(struct file *file, struct kobject *kobj, struct bin_attribute *bin_attr, @@ -167,6 +184,13 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj, return snprintf(buf, len, "%d\n", writable.val); } + if (bpf_testmod_fentry_test1(1) != 2 || + bpf_testmod_fentry_test2(2, 3) != 5 || + bpf_testmod_fentry_test3(4, 5, 6) != 15) + goto out; + + bpf_testmod_fentry_ok = 1; +out: return -EIO; /* always fail */ } EXPORT_SYMBOL(bpf_testmod_test_read); |