diff options
Diffstat (limited to 'tools/testing/selftests/kvm/include/test_util.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/test_util.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h index 8a6e30612c86..3e473058849f 100644 --- a/tools/testing/selftests/kvm/include/test_util.h +++ b/tools/testing/selftests/kvm/include/test_util.h @@ -91,9 +91,28 @@ struct guest_random_state { uint32_t seed; }; +extern uint32_t guest_random_seed; +extern struct guest_random_state guest_rng; + struct guest_random_state new_guest_random_state(uint32_t seed); uint32_t guest_random_u32(struct guest_random_state *state); +static inline bool __guest_random_bool(struct guest_random_state *state, + uint8_t percent) +{ + return (guest_random_u32(state) % 100) < percent; +} + +static inline bool guest_random_bool(struct guest_random_state *state) +{ + return __guest_random_bool(state, 50); +} + +static inline uint64_t guest_random_u64(struct guest_random_state *state) +{ + return ((uint64_t)guest_random_u32(state) << 32) | guest_random_u32(state); +} + enum vm_mem_backing_src_type { VM_MEM_SRC_ANONYMOUS, VM_MEM_SRC_ANONYMOUS_THP, |