KVM: Drop obsolete cpu_get/put in make_all_cpus_request
Jan Kiszka [Mon, 20 Jul 2009 09:30:12 +0000 (11:30 +0200)]
spin_lock disables preemption, so we can simply read the current cpu.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

virt/kvm/kvm_main.c

index 532af9b..646cf2a 100644 (file)
@@ -741,8 +741,8 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
        if (alloc_cpumask_var(&cpus, GFP_ATOMIC))
                cpumask_clear(cpus);
 
-       me = get_cpu();
        spin_lock(&kvm->requests_lock);
+       me = smp_processor_id();
        kvm_for_each_vcpu(i, vcpu, kvm) {
                if (test_and_set_bit(req, &vcpu->requests))
                        continue;
@@ -757,7 +757,6 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
        else
                called = false;
        spin_unlock(&kvm->requests_lock);
-       put_cpu();
        free_cpumask_var(cpus);
        return called;
 }