[11/23] KVM: PPC: Book3S HV: Add ICP real mode counters

diff --git a/arch/powerpc/kvm/book3s_hv_rm_xics.c b/arch/powerpc/kvm/book3s_hv_rm_xics.c
index 73bbe92..6dded8c 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_xics.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_xics.c
@@ -227,6 +227,7 @@  static void icp_rm_deliver_irq(struct kvmppc_xics *xics, struct kvmppc_icp *icp,
 	ics = kvmppc_xics_find_ics(xics, new_irq, &src);
 	if (!ics) {
 		/* Unsafe increment, but this does not need to be accurate */
+		xics->err_noics++;
 		return;
 	}
 	state = &ics->irq_state[src];
@@ -239,6 +240,7 @@  static void icp_rm_deliver_irq(struct kvmppc_xics *xics, struct kvmppc_icp *icp,
 		icp = kvmppc_xics_find_server(xics->kvm, state->server);
 		if (!icp) {
 			/* Unsafe increment again*/
+			xics->err_noicp++;
 			goto out;
 		}
 	}
@@ -383,6 +385,7 @@  static void icp_rm_down_cppr(struct kvmppc_xics *xics, struct kvmppc_icp *icp,
 	 * separately here as well.
 	 */
 	if (resend) {
+		icp->n_check_resend++;
 		icp_rm_check_resend(xics, icp);
 	}
 }
@@ -500,11 +503,13 @@  int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
 
 	/* Handle reject in real mode */
 	if (reject && reject != XICS_IPI) {
+		this_icp->n_reject++;
 		icp_rm_deliver_irq(xics, icp, reject);
 	}
 
 	/* Handle resends in real mode */
 	if (resend) {
+		this_icp->n_check_resend++;
 		icp_rm_check_resend(xics, icp);
 	}
 
@@ -566,6 +571,7 @@  int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr)
 	 * attempt (see comments in icp_rm_deliver_irq).
 	 */
 	if (reject && reject != XICS_IPI) {
+		icp->n_reject++;
 		icp_rm_deliver_irq(xics, icp, reject);
 	}
  bail:
@@ -616,6 +622,7 @@  int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr)
 
 	/* Still asserted, resend it */
 	if (state->asserted) {
+		icp->n_reject++;
 		icp_rm_deliver_irq(xics, icp, irq);
 	}
 
diff --git a/arch/powerpc/kvm/book3s_xics.c b/arch/powerpc/kvm/book3s_xics.c
index 56ed9b4..eb2569a 100644
--- a/arch/powerpc/kvm/book3s_xics.c
+++ b/arch/powerpc/kvm/book3s_xics.c
@@ -901,6 +901,7 @@  static int xics_debug_show(struct seq_file *m, void *private)
 	unsigned long flags;
 	unsigned long t_rm_kick_vcpu, t_rm_check_resend;
 	unsigned long t_rm_reject, t_rm_notify_eoi;
+	unsigned long t_reject, t_check_resend;
 
 	if (!kvm)
 		return 0;
@@ -909,6 +910,8 @@  static int xics_debug_show(struct seq_file *m, void *private)
 	t_rm_notify_eoi = 0;
 	t_rm_check_resend = 0;
 	t_rm_reject = 0;
+	t_check_resend = 0;
+	t_reject = 0;
 
 	seq_printf(m, "=========\nICP state\n=========\n");
 
@@ -928,12 +931,15 @@  static int xics_debug_show(struct seq_file *m, void *private)
 		t_rm_notify_eoi += icp->n_rm_notify_eoi;
 		t_rm_check_resend += icp->n_rm_check_resend;
 		t_rm_reject += icp->n_rm_reject;
+		t_check_resend += icp->n_check_resend;
+		t_reject += icp->n_reject;
 	}
 
-	seq_puts(m, "ICP Guest Real Mode exit totals: ");
-	seq_printf(m, "\tkick_vcpu=%lu check_resend=%lu reject=%lu notify_eoi=%lu\n",
+	seq_printf(m, "ICP Guest->Host totals: kick_vcpu=%lu check_resend=%lu reject=%lu notify_eoi=%lu\n",
 			t_rm_kick_vcpu, t_rm_check_resend,
 			t_rm_reject, t_rm_notify_eoi);
+	seq_printf(m, "ICP Real Mode totals: check_resend=%lu resend=%lu\n",
+			t_check_resend, t_reject);
 	for (icsid = 0; icsid <= KVMPPC_XICS_MAX_ICS_ID; icsid++) {
 		struct kvmppc_ics *ics = xics->ics[icsid];
 
diff --git a/arch/powerpc/kvm/book3s_xics.h b/arch/powerpc/kvm/book3s_xics.h
index 055424c..56ea44f 100644
--- a/arch/powerpc/kvm/book3s_xics.h
+++ b/arch/powerpc/kvm/book3s_xics.h
@@ -83,6 +83,9 @@  struct kvmppc_icp {
 	unsigned long n_rm_check_resend;
 	unsigned long n_rm_reject;
 	unsigned long n_rm_notify_eoi;
+	/* Counters for handling ICP processing in real mode */
+	unsigned long n_check_resend;
+	unsigned long n_reject;
 
 	/* Debug stuff for real mode */
 	union kvmppc_icp_state rm_dbgstate;
@@ -102,6 +105,8 @@  struct kvmppc_xics {
 	u32 max_icsid;
 	bool real_mode;
 	bool real_mode_dbg;
+	u32 err_noics;
+	u32 err_noicp;
 	struct kvmppc_ics *ics[KVMPPC_XICS_MAX_ICS_ID + 1];
 };