diff options
| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2024-01-23 17:03:50 +0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-01-23 20:26:17 -0800 |
| commit | 15b4f88dcc0a751f790bfea5ef9dcc6385c62236 (patch) | |
| tree | 166a41af24d6304c34d61e2f797bbaf07f1765f8 /tools/testing/selftests/bpf/testing_helpers.c | |
| parent | 8b593021319d4893a8fbeb7bd1f668657e68403c (diff) | |
selftests/bpf: Move is_jit_enabled() into testing_helpers
Currently, is_jit_enabled() is only used in test_progs, move it into
testing_helpers so that it can be used in test_verifier. While at it,
remove the second argument "0" of open() as Hou Tao suggested.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Hou Tao <houtao1@huawei.com>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/bpf/20240123090351.2207-2-yangtiezhu@loongson.cn
Diffstat (limited to 'tools/testing/selftests/bpf/testing_helpers.c')
| -rw-r--r-- | tools/testing/selftests/bpf/testing_helpers.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/testing_helpers.c b/tools/testing/selftests/bpf/testing_helpers.c index 106ef05586b8..a59e56d804ee 100644 --- a/tools/testing/selftests/bpf/testing_helpers.c +++ b/tools/testing/selftests/bpf/testing_helpers.c @@ -457,3 +457,21 @@ out_free_buf: *buf = NULL; return -1; } + +bool is_jit_enabled(void) +{ + const char *jit_sysctl = "/proc/sys/net/core/bpf_jit_enable"; + bool enabled = false; + int sysctl_fd; + + sysctl_fd = open(jit_sysctl, O_RDONLY); + if (sysctl_fd != -1) { + char tmpc; + + if (read(sysctl_fd, &tmpc, sizeof(tmpc)) == 1) + enabled = (tmpc != '0'); + close(sysctl_fd); + } + + return enabled; +} |