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Date:   Tue,  4 Oct 2022 11:31:29 +0200
From:   Thomas Huth <thuth@...hat.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>, kvm@...r.kernel.org
Cc:     Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] KVM: selftests: Use TAP interface in the kvm_binary_stats_test

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@...hat.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

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