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authorOliver Upton <oupton@google.com>2022-07-19 17:31:33 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2022-08-01 15:01:22 +0300
commit7eebae78bc9754564779927976f37d04c2c01b64 (patch)
treeaff87f5e10f9c9aba9400090b583b5f18c914920 /tools
parentad5b072716e9ea7164b578a06c615966e9203c45 (diff)
downloadlinux-7eebae78bc9754564779927976f37d04c2c01b64.tar.xz
selftests: KVM: Provide descriptive assertions in kvm_binary_stats_test
As it turns out, tests sometimes fail. When that is the case, packing the test assertion with as much relevant information helps track down the problem more quickly. Sharpen up the stat descriptor assertions in kvm_binary_stats_test to more precisely describe the reason for the test assertion and which stat is to blame. Signed-off-by: Oliver Upton <oupton@google.com> Reviewed-by: Andrew Jones <andrew.jones@linux.dev> Message-Id: <20220719143134.3246798-3-oliver.upton@linux.dev> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/kvm/kvm_binary_stats_test.c24
1 files changed, 16 insertions, 8 deletions
diff --git a/tools/testing/selftests/kvm/kvm_binary_stats_test.c b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
index 40227ad9ba0c..3237c7c94bf0 100644
--- a/tools/testing/selftests/kvm/kvm_binary_stats_test.c
+++ b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
@@ -31,6 +31,7 @@ static void stats_test(int stats_fd)
struct kvm_stats_desc *stats_desc;
u64 *stats_data;
struct kvm_stats_desc *pdesc;
+ u32 type, unit, base;
/* Read kvm stats header */
read_stats_header(stats_fd, &header);
@@ -72,18 +73,21 @@ static void stats_test(int stats_fd)
/* Sanity check for fields in descriptors */
for (i = 0; i < header.num_desc; ++i) {
pdesc = get_stats_descriptor(stats_desc, i, &header);
+ type = pdesc->flags & KVM_STATS_TYPE_MASK;
+ unit = pdesc->flags & KVM_STATS_UNIT_MASK;
+ base = pdesc->flags & KVM_STATS_BASE_MASK;
/* Check name string */
TEST_ASSERT(strlen(pdesc->name) < header.name_size,
"KVM stats name (index: %d) too long", i);
/* Check type,unit,base boundaries */
- TEST_ASSERT((pdesc->flags & KVM_STATS_TYPE_MASK) <= KVM_STATS_TYPE_MAX,
- "Unknown KVM stats type");
- TEST_ASSERT((pdesc->flags & KVM_STATS_UNIT_MASK) <= KVM_STATS_UNIT_MAX,
- "Unknown KVM stats unit");
- TEST_ASSERT((pdesc->flags & KVM_STATS_BASE_MASK) <= KVM_STATS_BASE_MAX,
- "Unknown KVM stats base");
+ TEST_ASSERT(type <= KVM_STATS_TYPE_MAX,
+ "Unknown KVM stats (%s) type: %u", pdesc->name, type);
+ TEST_ASSERT(unit <= KVM_STATS_UNIT_MAX,
+ "Unknown KVM stats (%s) unit: %u", pdesc->name, unit);
+ TEST_ASSERT(base <= KVM_STATS_BASE_MAX,
+ "Unknown KVM stats (%s) base: %u", pdesc->name, base);
/*
* Check exponent for stats unit
@@ -97,10 +101,14 @@ static void stats_test(int stats_fd)
case KVM_STATS_UNIT_NONE:
case KVM_STATS_UNIT_BYTES:
case KVM_STATS_UNIT_CYCLES:
- TEST_ASSERT(pdesc->exponent >= 0, "Unsupported KVM stats unit");
+ TEST_ASSERT(pdesc->exponent >= 0,
+ "Unsupported KVM stats (%s) exponent: %i",
+ pdesc->name, pdesc->exponent);
break;
case KVM_STATS_UNIT_SECONDS:
- TEST_ASSERT(pdesc->exponent <= 0, "Unsupported KVM stats unit");
+ TEST_ASSERT(pdesc->exponent <= 0,
+ "Unsupported KVM stats (%s) exponent: %i",
+ pdesc->name, pdesc->exponent);
break;
}