[PATCH v2 12/12] KVM: selftests: Clean up global constants in hardware disable test

[Sean Christopherson <seanjc@google.com>]

Rename the global constants in the hardware disable test to better
capture what they control, and open code the literal number of sleeping
tasks and iterations instead of using power-of-2 math to express values
that are 100% arbitrary.

Opportunistically tag the global semaphore with "static".

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 .../selftests/kvm/hardware_disable_test.c     | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/kvm/hardware_disable_test.c b/tools/testing/selftests/kvm/hardware_disable_test.c
index 694d064e63f1..cf9306bbe970 100644
--- a/tools/testing/selftests/kvm/hardware_disable_test.c
+++ b/tools/testing/selftests/kvm/hardware_disable_test.c
@@ -17,13 +17,13 @@
 #include "kvm_util.h"
 #include "ucall_common.h"
 
-#define VCPU_NUM 4
-#define SLEEPING_THREAD_NUM (1 << 4)
-#define FORK_NUM (1ULL << 9)
-#define DELAY_US_MAX 2000
+#define NR_VCPUS		4
+#define NR_SLEEPERS_PER_VCPU	16
+#define NR_ITERATIONS		512
+#define DELAY_US_MAX		2000
 
 static cpu_set_t threads_cpu_set;
-sem_t *sem;
+static sem_t *sem;
 
 static void guest_code(void)
 {
@@ -75,15 +75,15 @@ static void run_test(u32 run)
 	pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &threads_cpu_set);
 #endif
 
-	vm = vm_create(VCPU_NUM);
+	vm = vm_create(NR_VCPUS);
 
 	pr_debug("%s: [%d] start vcpus\n", __func__, run);
-	for (i = 0; i < VCPU_NUM; ++i) {
+	for (i = 0; i < NR_VCPUS; ++i) {
 		vcpu = vm_vcpu_add(vm, i, guest_code);
 
 		kvm_pthread_create(&thread, &attr, run_vcpu, vcpu);
 
-		for (j = 0; j < SLEEPING_THREAD_NUM; ++j)
+		for (j = 0; j < NR_SLEEPERS_PER_VCPU; ++j)
 			kvm_pthread_create(&thread, &attr, sleeping_thread, (void *)NULL);
 	}
 	pr_debug("%s: [%d] all threads launched\n", __func__, run);
@@ -133,13 +133,13 @@ int main(int argc, char **argv)
 
 	kvm_sched_getaffinity(0, sizeof(cpu_set_t), &allowed_cpu_set);
 
-	for (i = 0; i < VCPU_NUM && CPU_COUNT(&allowed_cpu_set); i++)
+	for (i = 0; i < NR_VCPUS && CPU_COUNT(&allowed_cpu_set); i++)
 		CPU_SET(kvm_pick_random_cpu(&allowed_cpu_set), &threads_cpu_set);
 
 	sem = sem_open("vm_sem", O_CREAT | O_EXCL, 0644, 0);
 	sem_unlink("vm_sem");
 
-	for (i = 0; i < FORK_NUM; ++i) {
+	for (i = 0; i < NR_ITERATIONS; ++i) {
 		pid = fork();
 		TEST_ASSERT(pid >= 0, "%s: unable to fork", __func__);
 		if (pid == 0)
-- 
2.55.0.508.g3f0d502094-goog