* [PATCH bpf-next] selftests/bpf: Remove redundant checks in get_stack_print_output()
@ 2022-04-05 16:37 Yuntao Wang
2022-04-05 23:52 ` Andrii Nakryiko
0 siblings, 1 reply; 2+ messages in thread
From: Yuntao Wang @ 2022-04-05 16:37 UTC (permalink / raw)
To: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko
Cc: Martin KaFai Lau, Song Liu, Yonghong Song, John Fastabend,
KP Singh, Shuah Khan, netdev, bpf, linux-kernel, linux-kselftest,
Yuntao Wang
The checks preceding CHECK macro are redundant, remove them.
Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
---
tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
index 16048978a1ef..5f2ab720dabd 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
@@ -76,10 +76,8 @@ static void get_stack_print_output(void *ctx, int cpu, void *data, __u32 size)
good_user_stack = true;
}
- if (!good_kern_stack)
- CHECK(!good_kern_stack, "kern_stack", "corrupted kernel stack\n");
- if (!good_user_stack)
- CHECK(!good_user_stack, "user_stack", "corrupted user stack\n");
+ CHECK(!good_kern_stack, "kern_stack", "corrupted kernel stack\n");
+ CHECK(!good_user_stack, "user_stack", "corrupted user stack\n");
}
void test_get_stack_raw_tp(void)
--
2.35.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH bpf-next] selftests/bpf: Remove redundant checks in get_stack_print_output()
2022-04-05 16:37 [PATCH bpf-next] selftests/bpf: Remove redundant checks in get_stack_print_output() Yuntao Wang
@ 2022-04-05 23:52 ` Andrii Nakryiko
0 siblings, 0 replies; 2+ messages in thread
From: Andrii Nakryiko @ 2022-04-05 23:52 UTC (permalink / raw)
To: Yuntao Wang
Cc: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko,
Martin KaFai Lau, Song Liu, Yonghong Song, John Fastabend,
KP Singh, Shuah Khan, Networking, bpf, open list,
open list:KERNEL SELFTEST FRAMEWORK
On Tue, Apr 5, 2022 at 9:39 AM Yuntao Wang <ytcoode@gmail.com> wrote:
>
> The checks preceding CHECK macro are redundant, remove them.
>
> Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
> ---
> tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
> index 16048978a1ef..5f2ab720dabd 100644
> --- a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
> +++ b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
> @@ -76,10 +76,8 @@ static void get_stack_print_output(void *ctx, int cpu, void *data, __u32 size)
> good_user_stack = true;
> }
>
> - if (!good_kern_stack)
> - CHECK(!good_kern_stack, "kern_stack", "corrupted kernel stack\n");
> - if (!good_user_stack)
> - CHECK(!good_user_stack, "user_stack", "corrupted user stack\n");
> + CHECK(!good_kern_stack, "kern_stack", "corrupted kernel stack\n");
> + CHECK(!good_user_stack, "user_stack", "corrupted user stack\n");
I suspect it was to avoid super long verbose logs, as each CHECK()
emits one line into output and here we might be getting a lot of
samples. So let's keep it as is. But for the future let's try getting
rid of CHECK()s as much as possible in favor of ASSERT_xxx(). Thanks.
> }
>
> void test_get_stack_raw_tp(void)
> --
> 2.35.1
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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