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[PULL,3/8] KVM: s390: Simplify online vcpus counting for stsi

Message ID 1393932438-58848-4-git-send-email-borntraeger@de.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Christian Borntraeger March 4, 2014, 11:27 a.m. UTC 
From: Jens Freimann <jfrei@linux.vnet.ibm.com>

We don't need to loop over all cpus to get the number of
vcpus. Let's use the available counter online_vcpus instead.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
 arch/s390/kvm/priv.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)
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Patch

diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 75beea6..ae9e8ee 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -396,15 +396,10 @@  static int handle_stidp(struct kvm_vcpu *vcpu)
 
 static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
 {
-	struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
 	int cpus = 0;
 	int n;
 
-	spin_lock(&fi->lock);
-	for (n = 0; n < KVM_MAX_VCPUS; n++)
-		if (fi->local_int[n])
-			cpus++;
-	spin_unlock(&fi->lock);
+	cpus = atomic_read(&vcpu->kvm->online_vcpus);
 
 	/* deal with other level 3 hypervisors */
 	if (stsi(mem, 3, 2, 2))