diff options
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_misc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_misc.h b/tools/testing/selftests/bpf/progs/bpf_misc.h index c95eb603403c..3c03ec8056ce 100644 --- a/tools/testing/selftests/bpf/progs/bpf_misc.h +++ b/tools/testing/selftests/bpf/progs/bpf_misc.h @@ -76,6 +76,9 @@ #define FUNC_REG_ARG_CNT 5 #endif +/* make it look to compiler like value is read and written */ +#define __sink(expr) asm volatile("" : "+g"(expr)) + struct bpf_iter_num; extern int bpf_iter_num_new(struct bpf_iter_num *it, int start, int end) __ksym; |