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| author | Michal Rostecki <mrostecki@opensuse.org> | 2019-05-23 15:53:54 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-05-24 23:47:17 +0300 |
| commit | 37739d1b4fe744da9c2f342224000ae7fbb5c063 (patch) | |
| tree | a0caaaf379e92c3d5c0631e12d8284a27cd43402 /tools/testing/selftests/bpf/bpf_helpers.h | |
| parent | 5762a20b11ef261ae8436868555fab4340cb3ca0 (diff) | |
| download | linux-37739d1b4fe744da9c2f342224000ae7fbb5c063.tar.xz | |
selftests: bpf: Move bpf_printk to bpf_helpers.h
bpf_printk is a macro which is commonly used to print out debug messages
in BPF programs and it was copied in many selftests and samples. Since
all of them include bpf_helpers.h, this change moves the macro there.
Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_helpers.h')
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_helpers.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h index 5f6f9e7aba2a..4b27840b8109 100644 --- a/tools/testing/selftests/bpf/bpf_helpers.h +++ b/tools/testing/selftests/bpf/bpf_helpers.h @@ -8,6 +8,14 @@ */ #define SEC(NAME) __attribute__((section(NAME), used)) +/* helper macro to print out debug messages */ +#define bpf_printk(fmt, ...) \ +({ \ + char ____fmt[] = fmt; \ + bpf_trace_printk(____fmt, sizeof(____fmt), \ + ##__VA_ARGS__); \ +}) + /* helper functions called from eBPF programs written in C */ static void *(*bpf_map_lookup_elem)(void *map, const void *key) = (void *) BPF_FUNC_map_lookup_elem; |