[PATCH v2 06/12] KVM: selftests: Affine threads to random CPUs in hardware disable test
Sean Christopherson <[email protected]>
| Newsgroups | org.kernel.vger.kvm,dev.linux.lists.kvmarm,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
Affine the worker threads to random CPUs in the hardware disable test, and honor the starting CPU set in the process. Hardcoding to CPUs 0-3 is both wrong and less interesting than running on random CPUs. Signed-off-by: Sean Christopherson <[email protected]> --- tools/testing/selftests/kvm/hardware_disable_test.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/hardware_disable_test.c b/tools/testing/selftests/kvm/hardware_disable_test.c index d8288147b0a6..bd23c1300370 100644 --- a/tools/testing/selftests/kvm/hardware_disable_test.c +++ b/tools/testing/selftests/kvm/hardware_disable_test.c @@ -149,12 +149,15 @@ void wait_for_child_setup(pid_t pid) int main(int argc, char **argv) { + cpu_set_t allowed_cpu_set; u32 i; int s, r; pid_t pid; - for (i = 0; i < VCPU_NUM; i++) - CPU_SET(i, &threads_cpu_set); + kvm_sched_getaffinity(0, sizeof(cpu_set_t), &allowed_cpu_set); + + for (i = 0; i < VCPU_NUM && 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"); -- 2.55.0.508.g3f0d502094-goog