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-rw-r--r--tools/testing/selftests/kvm/include/test_util.h19
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 8a6e30612c..3e47305884 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,