linux-kernel - [PATCH v2 126/144] KVM: selftests: Convert kvm_binary_stats

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Date:   Fri,  3 Jun 2022 00:43:13 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, Vitaly Kuznetsov <vkuznets@...hat.com>,
        Andrew Jones <drjones@...hat.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>,
        Oliver Upton <oupton@...gle.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 126/144] KVM: selftests: Convert kvm_binary_stats_test away
 from vCPU IDs

Track vCPUs by their 'struct kvm_vcpu' object in kvm_binary_stats_test,
not by their ID.  The per-vCPU helpers will soon take a vCPU instead of a
VM+vcpu_id pair.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 tools/testing/selftests/kvm/kvm_binary_stats_test.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/kvm/kvm_binary_stats_test.c b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
index 407e9ea8e6f3..dfc3cf531ced 100644
--- a/tools/testing/selftests/kvm/kvm_binary_stats_test.c
+++ b/tools/testing/selftests/kvm/kvm_binary_stats_test.c
@@ -172,9 +172,9 @@ static void vm_stats_test(struct kvm_vm *vm)
 	TEST_ASSERT(fcntl(stats_fd, F_GETFD) == -1, "Stats fd not freed");
 }
 
-static void vcpu_stats_test(struct kvm_vm *vm, int vcpu_id)
+static void vcpu_stats_test(struct kvm_vcpu *vcpu)
 {
-	int stats_fd = vcpu_get_stats_fd(vm, vcpu_id);
+	int stats_fd = vcpu_get_stats_fd(vcpu->vm, vcpu->id);
 
 	stats_test(stats_fd);
 	close(stats_fd);
@@ -195,6 +195,7 @@ static void vcpu_stats_test(struct kvm_vm *vm, int vcpu_id)
 int main(int argc, char *argv[])
 {
 	int i, j;
+	struct kvm_vcpu **vcpus;
 	struct kvm_vm **vms;
 	int max_vm = DEFAULT_NUM_VM;
 	int max_vcpu = DEFAULT_NUM_VCPU;
@@ -220,17 +221,21 @@ int main(int argc, char *argv[])
 	/* Create VMs and VCPUs */
 	vms = malloc(sizeof(vms[0]) * max_vm);
 	TEST_ASSERT(vms, "Allocate memory for storing VM pointers");
+
+	vcpus = malloc(sizeof(struct kvm_vcpu *) * max_vm * max_vcpu);
+	TEST_ASSERT(vcpus, "Allocate memory for storing vCPU pointers");
+
 	for (i = 0; i < max_vm; ++i) {
 		vms[i] = vm_create_barebones();
 		for (j = 0; j < max_vcpu; ++j)
-			__vm_vcpu_add(vms[i], j);
+			vcpus[j * max_vcpu + i] = __vm_vcpu_add(vms[i], j);
 	}
 
 	/* Check stats read for every VM and VCPU */
 	for (i = 0; i < max_vm; ++i) {
 		vm_stats_test(vms[i]);
 		for (j = 0; j < max_vcpu; ++j)
-			vcpu_stats_test(vms[i], j);
+			vcpu_stats_test(vcpus[j * max_vcpu + i]);
 	}
 
 	for (i = 0; i < max_vm; ++i)
-- 
2.36.1.255.ge46751e96f-goog