[PATCH 1/3] KVM: selftests: Use TAP interface in the kvm_binary_stats_test

Thomas Huth
2022-10-04T09:39:32Z

The kvm_binary_stats_test test currently does not have any output (unless
one of the TEST_ASSERT statement fails), so it's hard to say for a user
how far it did proceed already. Thus let's make this a little bit more
user-friendly and include some TAP output via the kselftest.h interface.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
tools/testing/selftests/kvm/kvm_binary_stats_test.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/kvm_binary_stats_test.c b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
index 0b45ac593387..894417c96f70 100644
--- a/tools/testing/selftests/kvm/kvm_binary_stats_test.c
+++ b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
@@ -19,6 +19,7 @@
#include "kvm_util.h"
#include "asm/kvm.h"
#include "linux/kvm.h"
+#include "kselftest.h"

static void stats_test(int stats_fd)
{
@@ -51,7 +52,7 @@ static void stats_test(int stats_fd)

/* Sanity check for other fields in header */
if (header.num_desc == 0) {
- printf("No KVM stats defined!");
+ ksft_print_msg("No KVM stats defined!\n");
return;
}
/*
@@ -224,9 +225,13 @@ int main(int argc, char *argv[])
max_vcpu = DEFAULT_NUM_VCPU;
}

+ ksft_print_header();
+
/* Check the extension for binary stats */
TEST_REQUIRE(kvm_has_cap(KVM_CAP_BINARY_STATS_FD));

+ ksft_set_plan(max_vm);
+
/* Create VMs and VCPUs */
vms = malloc(sizeof(vms[0]) * max_vm);
TEST_ASSERT(vms, "Allocate memory for storing VM pointers");
@@ -245,10 +250,12 @@ int main(int argc, char *argv[])
vm_stats_test(vms[i]);
for (j = 0; j < max_vcpu; ++j)
vcpu_stats_test(vcpus[i * max_vcpu + j]);
+ ksft_test_result_pass("vm%i\n", i);
}

for (i = 0; i < max_vm; ++i)
kvm_vm_free(vms[i]);
free(vms);
- return 0;
+
+ ksft_finished(); /* Print results and exit() accordingly */
}
--
2.31.1