The hist_param field should be zero for simple stats and 2 for
logarithmic histogram. It shouldbe non-zero for linear histogram stats.
Signed-off-by: Jing Zhang <jingzhangos@xxxxxxxxxx>
---
.../selftests/kvm/kvm_binary_stats_test.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/tools/testing/selftests/kvm/kvm_binary_stats_test.c b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
index 5906bbc08483..03c7842fcb26 100644
--- a/tools/testing/selftests/kvm/kvm_binary_stats_test.c
+++ b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
@@ -109,6 +109,23 @@ static void stats_test(int stats_fd)
/* Check size field, which should not be zero */
TEST_ASSERT(pdesc->size, "KVM descriptor(%s) with size of 0",
pdesc->name);
+ /* Check hist_param field */
+ switch (pdesc->flags & KVM_STATS_TYPE_MASK) {
+ case KVM_STATS_TYPE_LINEAR_HIST:
+ TEST_ASSERT(pdesc->hist_param,
+ "Bucket size of Linear Histogram stats (%s) is zero",
+ pdesc->name);
+ break;
+ case KVM_STATS_TYPE_LOG_HIST:
+ TEST_ASSERT(pdesc->hist_param == 2,
+ "Base of Log Histogram stats (%s) is not 2",
+ pdesc->name);
+ break;
+ default:
+ TEST_ASSERT(!pdesc->hist_param,
+ "Simple stats (%s) with hist_param of nonzero",
+ pdesc->name);
+ }
size_data += pdesc->size * sizeof(*stats_data);
}
/* Check overlap */
--
2.32.0.93.g670b81a890-goog
