Commit 36c5ad73 authored by David Matlack's avatar David Matlack Committed by Paolo Bonzini
Browse files

KVM: selftests: Start at iteration 0 instead of -1 



Start at iteration 0 instead of -1 to avoid having to initialize
vcpu_last_completed_iteration when setting up vCPU threads. This
simplifies the next commit where we move vCPU thread initialization
out to a common helper.

No functional change intended.

Signed-off-by: default avatarDavid Matlack <dmatlack@google.com>
Message-Id: <20211111001257.1446428-2-dmatlack@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 13bbc703

tools/testing/selftests/kvm/access_tracking_perf_test.c

+3 −5
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ 
#include "guest_modes.h"



/* Global variable used to synchronize all of the vCPU threads. */

static int iteration = -1;

static int iteration;



/* Defines what vCPU threads should do during a given iteration. */

static enum {
@@ -220,7 +220,7 @@ static void *vcpu_thread_main(void *arg) 
	struct perf_test_vcpu_args *vcpu_args = arg;

	struct kvm_vm *vm = perf_test_args.vm;

	int vcpu_id = vcpu_args->vcpu_id;

	int current_iteration = -1;

	int current_iteration = 0;



	while (spin_wait_for_next_iteration(&current_iteration)) {

		switch (READ_ONCE(iteration_work)) {
@@ -303,11 +303,9 @@ static pthread_t *create_vcpu_threads(int vcpus) 
	vcpu_threads = malloc(vcpus * sizeof(vcpu_threads[0]));

	TEST_ASSERT(vcpu_threads, "Failed to allocate vcpu_threads.");



	for (i = 0; i < vcpus; i++) {

		vcpu_last_completed_iteration[i] = iteration;

	for (i = 0; i < vcpus; i++)

		pthread_create(&vcpu_threads[i], NULL, vcpu_thread_main,

			       &perf_test_args.vcpu_args[i]);

	}



	return vcpu_threads;

}