From b037a4f34ec51b6c8ccb352a04056c04a4bfc269 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Tue, 12 May 2009 17:21:50 +0200 Subject: KVM: s390: optimize float int lock: spin_lock_bh --> spin_lock The floating interrupt lock is only taken in process context. We can replace all spin_lock_bh with standard spin_lock calls. Signed-off-by: Christian Borntraeger Signed-off-by: Christian Ehrhardt Signed-off-by: Avi Kivity --- arch/s390/kvm/sigp.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'arch/s390/kvm/sigp.c') diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c index f27dbedf086..36678835034 100644 --- a/arch/s390/kvm/sigp.c +++ b/arch/s390/kvm/sigp.c @@ -52,7 +52,7 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, if (cpu_addr >= KVM_MAX_VCPUS) return 3; /* not operational */ - spin_lock_bh(&fi->lock); + spin_lock(&fi->lock); if (fi->local_int[cpu_addr] == NULL) rc = 3; /* not operational */ else if (atomic_read(fi->local_int[cpu_addr]->cpuflags) @@ -64,7 +64,7 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, *reg |= SIGP_STAT_STOPPED; rc = 1; /* status stored */ } - spin_unlock_bh(&fi->lock); + spin_unlock(&fi->lock); VCPU_EVENT(vcpu, 4, "sensed status of cpu %x rc %x", cpu_addr, rc); return rc; @@ -86,7 +86,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr) inti->type = KVM_S390_INT_EMERGENCY; - spin_lock_bh(&fi->lock); + spin_lock(&fi->lock); li = fi->local_int[cpu_addr]; if (li == NULL) { rc = 3; /* not operational */ @@ -102,7 +102,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr) spin_unlock_bh(&li->lock); rc = 0; /* order accepted */ unlock: - spin_unlock_bh(&fi->lock); + spin_unlock(&fi->lock); VCPU_EVENT(vcpu, 4, "sent sigp emerg to cpu %x", cpu_addr); return rc; } @@ -123,7 +123,7 @@ static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store) inti->type = KVM_S390_SIGP_STOP; - spin_lock_bh(&fi->lock); + spin_lock(&fi->lock); li = fi->local_int[cpu_addr]; if (li == NULL) { rc = 3; /* not operational */ @@ -142,7 +142,7 @@ static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store) spin_unlock_bh(&li->lock); rc = 0; /* order accepted */ unlock: - spin_unlock_bh(&fi->lock); + spin_unlock(&fi->lock); VCPU_EVENT(vcpu, 4, "sent sigp stop to cpu %x", cpu_addr); return rc; } @@ -188,7 +188,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address, if (!inti) return 2; /* busy */ - spin_lock_bh(&fi->lock); + spin_lock(&fi->lock); li = fi->local_int[cpu_addr]; if ((cpu_addr >= KVM_MAX_VCPUS) || (li == NULL)) { @@ -220,7 +220,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address, out_li: spin_unlock_bh(&li->lock); out_fi: - spin_unlock_bh(&fi->lock); + spin_unlock(&fi->lock); return rc; } -- cgit v1.2.3