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Commit 3f24ba15 authored by Christian Borntraeger's avatar Christian Borntraeger
Browse files

KVM: s390: Fixup interrupt vcpu event messages and levels 



This reworks the debug logging for interrupt related logs.
Several changes:
- unify program int/irq
- improve decoding (e.g. use mcic instead of parm64 for machine
  check injection)
- remove useless interrupt type number (the name is enough)
- rename "interrupt:" to "deliver:" as the other side is called "inject"
- use log level 3 for state changing and/or seldom events (like machine
  checks, restart..)
- use log level 4 for frequent events
- use 0x prefix for hex numbers
- add pfault done logging
- move some tracing outside spinlock

Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: default avatarJens Freimann <jfrei@linux.vnet.ibm.com>
parent ab7090a6

arch/s390/kvm/interrupt.c

+27 −24
Original line number Diff line number Diff line
@@ -311,8 +311,8 @@ static int __must_check __deliver_pfault_init(struct kvm_vcpu *vcpu) 
	li->irq.ext.ext_params2 = 0;

	spin_unlock(&li->lock);



	VCPU_EVENT(vcpu, 4, "interrupt: pfault init parm:%x,parm64:%llx",

		   0, ext.ext_params2);

	VCPU_EVENT(vcpu, 4, "deliver: pfault init token 0x%llx",

		   ext.ext_params2);

	trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,

					 KVM_S390_INT_PFAULT_INIT,

					 0, ext.ext_params2);
@@ -368,7 +368,7 @@ static int __must_check __deliver_machine_check(struct kvm_vcpu *vcpu) 
	spin_unlock(&fi->lock);



	if (deliver) {

		VCPU_EVENT(vcpu, 4, "interrupt: machine check mcic=%llx",

		VCPU_EVENT(vcpu, 3, "deliver: machine check mcic 0x%llx",

			   mchk.mcic);

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,

						 KVM_S390_MCHK,
@@ -403,7 +403,7 @@ static int __must_check __deliver_restart(struct kvm_vcpu *vcpu) 
	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;

	int rc;



	VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu restart");

	VCPU_EVENT(vcpu, 3, "%s", "deliver: cpu restart");

	vcpu->stat.deliver_restart_signal++;

	trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_RESTART, 0, 0);
@@ -449,7 +449,7 @@ static int __must_check __deliver_emergency_signal(struct kvm_vcpu *vcpu) 
		clear_bit(IRQ_PEND_EXT_EMERGENCY, &li->pending_irqs);

	spin_unlock(&li->lock);



	VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp emerg");

	VCPU_EVENT(vcpu, 4, "%s", "deliver: sigp emerg");

	vcpu->stat.deliver_emergency_signal++;

	trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_INT_EMERGENCY,

					 cpu_addr, 0);
@@ -476,7 +476,7 @@ static int __must_check __deliver_external_call(struct kvm_vcpu *vcpu) 
	clear_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs);

	spin_unlock(&li->lock);



	VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp ext call");

	VCPU_EVENT(vcpu, 4, "%s", "deliver: sigp ext call");

	vcpu->stat.deliver_external_call++;

	trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,

					 KVM_S390_INT_EXTERNAL_CALL,
@@ -505,7 +505,7 @@ static int __must_check __deliver_prog(struct kvm_vcpu *vcpu) 
	memset(&li->irq.pgm, 0, sizeof(pgm_info));

	spin_unlock(&li->lock);



	VCPU_EVENT(vcpu, 4, "interrupt: pgm check code:%x, ilc:%x",

	VCPU_EVENT(vcpu, 3, "deliver: program irq code 0x%x, ilc:%d",

		   pgm_info.code, ilc);

	vcpu->stat.deliver_program_int++;

	trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_PROGRAM_INT,
@@ -621,7 +621,7 @@ static int __must_check __deliver_service(struct kvm_vcpu *vcpu) 
	clear_bit(IRQ_PEND_EXT_SERVICE, &fi->pending_irqs);

	spin_unlock(&fi->lock);



	VCPU_EVENT(vcpu, 4, "interrupt: sclp parm:%x",

	VCPU_EVENT(vcpu, 4, "deliver: sclp parameter 0x%x",

		   ext.ext_params);

	vcpu->stat.deliver_service_signal++;

	trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_INT_SERVICE,
@@ -650,9 +650,6 @@ static int __must_check __deliver_pfault_done(struct kvm_vcpu *vcpu) 
					struct kvm_s390_interrupt_info,

					list);

	if (inti) {

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,

				KVM_S390_INT_PFAULT_DONE, 0,

				inti->ext.ext_params2);

		list_del(&inti->list);

		fi->counters[FIRQ_CNTR_PFAULT] -= 1;

	}
@@ -661,6 +658,12 @@ static int __must_check __deliver_pfault_done(struct kvm_vcpu *vcpu) 
	spin_unlock(&fi->lock);



	if (inti) {

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,

						 KVM_S390_INT_PFAULT_DONE, 0,

						 inti->ext.ext_params2);

		VCPU_EVENT(vcpu, 4, "deliver: pfault done token 0x%llx",

			   inti->ext.ext_params2);



		rc  = put_guest_lc(vcpu, EXT_IRQ_CP_SERVICE,

				(u16 *)__LC_EXT_INT_CODE);

		rc |= put_guest_lc(vcpu, PFAULT_DONE,
@@ -690,7 +693,7 @@ static int __must_check __deliver_virtio(struct kvm_vcpu *vcpu) 
					list);

	if (inti) {

		VCPU_EVENT(vcpu, 4,

			   "interrupt: virtio parm:%x,parm64:%llx",

			   "deliver: virtio parm: 0x%x,parm64: 0x%llx",

			   inti->ext.ext_params, inti->ext.ext_params2);

		vcpu->stat.deliver_virtio_interrupt++;

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,
@@ -740,7 +743,7 @@ static int __must_check __deliver_io(struct kvm_vcpu *vcpu, 
					struct kvm_s390_interrupt_info,

					list);

	if (inti) {

		VCPU_EVENT(vcpu, 4, "interrupt: I/O %llx", inti->type);

		VCPU_EVENT(vcpu, 4, "deliver: I/O 0x%llx", inti->type);

		vcpu->stat.deliver_io_int++;

		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,

				inti->type,
@@ -863,7 +866,7 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu) 


	__set_cpu_idle(vcpu);

	hrtimer_start(&vcpu->arch.ckc_timer, ktime_set (0, sltime) , HRTIMER_MODE_REL);

	VCPU_EVENT(vcpu, 5, "enabled wait via clock comparator: %llx ns", sltime);

	VCPU_EVENT(vcpu, 4, "enabled wait via clock comparator: %llu ns", sltime);

no_timer:

	srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);

	kvm_vcpu_block(vcpu);
@@ -1008,8 +1011,8 @@ static int __inject_pfault_init(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) 
{

	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;



	VCPU_EVENT(vcpu, 3, "inject: external irq params:%x, params2:%llx",

		   irq->u.ext.ext_params, irq->u.ext.ext_params2);

	VCPU_EVENT(vcpu, 4, "inject: pfault init parameter block at 0x%llx",

		   irq->u.ext.ext_params2);

	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_PFAULT_INIT,

				   irq->u.ext.ext_params,

				   irq->u.ext.ext_params2);
@@ -1041,7 +1044,7 @@ static int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) 
	struct kvm_s390_extcall_info *extcall = &li->irq.extcall;

	uint16_t src_id = irq->u.extcall.code;



	VCPU_EVENT(vcpu, 3, "inject: external call source-cpu:%u",

	VCPU_EVENT(vcpu, 4, "inject: external call source-cpu:%u",

		   src_id);

	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_EXTERNAL_CALL,

				   src_id, 0);
@@ -1110,7 +1113,7 @@ static int __inject_sigp_restart(struct kvm_vcpu *vcpu, 
{

	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;



	VCPU_EVENT(vcpu, 3, "inject: restart type %llx", irq->type);

	VCPU_EVENT(vcpu, 3, "%s", "inject: restart int");

	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_RESTART, 0, 0);



	set_bit(IRQ_PEND_RESTART, &li->pending_irqs);
@@ -1122,7 +1125,7 @@ static int __inject_sigp_emergency(struct kvm_vcpu *vcpu, 
{

	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;



	VCPU_EVENT(vcpu, 3, "inject: emergency %u\n",

	VCPU_EVENT(vcpu, 4, "inject: emergency from cpu %u",

		   irq->u.emerg.code);

	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_EMERGENCY,

				   irq->u.emerg.code, 0);
@@ -1138,7 +1141,7 @@ static int __inject_mchk(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) 
	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;

	struct kvm_s390_mchk_info *mchk = &li->irq.mchk;



	VCPU_EVENT(vcpu, 5, "inject: machine check parm64:%llx",

	VCPU_EVENT(vcpu, 3, "inject: machine check mcic 0x%llx",

		   irq->u.mchk.mcic);

	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_MCHK, 0,

				   irq->u.mchk.mcic);
@@ -1168,7 +1171,7 @@ static int __inject_ckc(struct kvm_vcpu *vcpu) 
{

	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;



	VCPU_EVENT(vcpu, 3, "inject: type %x", KVM_S390_INT_CLOCK_COMP);

	VCPU_EVENT(vcpu, 3, "%s", "inject: clock comparator external");

	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_CLOCK_COMP,

				   0, 0);
@@ -1181,7 +1184,7 @@ static int __inject_cpu_timer(struct kvm_vcpu *vcpu) 
{

	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;



	VCPU_EVENT(vcpu, 3, "inject: type %x", KVM_S390_INT_CPU_TIMER);

	VCPU_EVENT(vcpu, 3, "%s", "inject: cpu timer external");

	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_INT_CPU_TIMER,

				   0, 0);
@@ -1431,14 +1434,14 @@ int kvm_s390_inject_vm(struct kvm *kvm, 
		inti->ext.ext_params2 = s390int->parm64;

		break;

	case KVM_S390_INT_SERVICE:

		VM_EVENT(kvm, 5, "inject: sclp parm:%x", s390int->parm);

		VM_EVENT(kvm, 4, "inject: sclp parm:%x", s390int->parm);

		inti->ext.ext_params = s390int->parm;

		break;

	case KVM_S390_INT_PFAULT_DONE:

		inti->ext.ext_params2 = s390int->parm64;

		break;

	case KVM_S390_MCHK:

		VM_EVENT(kvm, 5, "inject: machine check parm64:%llx",

		VM_EVENT(kvm, 3, "inject: machine check mcic 0x%llx",

			 s390int->parm64);

		inti->mchk.cr14 = s390int->parm; /* upper bits are not used */

		inti->mchk.mcic = s390int->parm64;