[PATCH v2 4/4] x86/kvm/hyper-v: avoid open-coding stimer_mark_pending() in kvm_hv_notify_acked_sint()

[Vitaly Kuznetsov]

stimers_pending optimization only helps us to avoid multiple
kvm_make_request() calls. This doesn't happen very often and these
calls are very cheap in the first place, remove open-coded version of
stimer_mark_pending() from kvm_hv_notify_acked_sint().

Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuzn...@redhat.com>
---
 arch/x86/kvm/hyperv.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 9533133be566..e6a2a085644a 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -206,7 +206,7 @@ static void kvm_hv_notify_acked_sint(struct kvm_vcpu *vcpu, 
u32 sint)
        struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);
        struct kvm_vcpu_hv *hv_vcpu = vcpu_to_hv_vcpu(vcpu);
        struct kvm_vcpu_hv_stimer *stimer;
-       int gsi, idx, stimers_pending;
+       int gsi, idx;
 
        trace_kvm_hv_notify_acked_sint(vcpu->vcpu_id, sint);
 
@@ -214,19 +214,13 @@ static void kvm_hv_notify_acked_sint(struct kvm_vcpu 
*vcpu, u32 sint)
                synic_clear_sint_msg_pending(synic, sint);
 
        /* Try to deliver pending Hyper-V SynIC timers messages */
-       stimers_pending = 0;
        for (idx = 0; idx < ARRAY_SIZE(hv_vcpu->stimer); idx++) {
                stimer = &hv_vcpu->stimer[idx];
                if (stimer->msg_pending && stimer->config.enable &&
                    !stimer->config.direct_mode &&
-                   stimer->config.sintx == sint) {
-                       set_bit(stimer->index,
-                               hv_vcpu->stimer_pending_bitmap);
-                       stimers_pending++;
-               }
+                   stimer->config.sintx == sint)
+                       stimer_mark_pending(stimer, false);
        }
-       if (stimers_pending)
-               kvm_make_request(KVM_REQ_HV_STIMER, vcpu);
 
        idx = srcu_read_lock(&kvm->irq_srcu);
        gsi = atomic_read(&synic->sint_to_gsi[sint]);
-- 
2.19.1