mirror of https://gitee.com/openkylin/linux.git
KVM: s390: Add implementation-specific trace events
Introduce a new trace system, kvm-s390, for some kvm/s390 specific trace points: - injection of interrupts - delivery of interrupts to the guest - creation/destruction of kvm machines and vcpus - stop actions for vcpus - reset requests for userspace Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Cornelia Huck
Avi Kivity
parent
5786fffa96
commit
ade38c311a
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@ -15,6 +15,7 @@
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#include <linux/kvm_host.h>
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#include "kvm-s390.h"
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#include "trace.h"
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#include "trace-s390.h"
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static int diag_release_pages(struct kvm_vcpu *vcpu)
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{
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@ -99,6 +100,7 @@ static int __diag_ipl_functions(struct kvm_vcpu *vcpu)
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vcpu->run->exit_reason = KVM_EXIT_S390_RESET;
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VCPU_EVENT(vcpu, 3, "requesting userspace resets %llx",
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vcpu->run->s390_reset_flags);
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trace_kvm_s390_request_resets(vcpu->run->s390_reset_flags);
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return -EREMOTE;
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}
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@ -20,6 +20,7 @@
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#include "kvm-s390.h"
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#include "gaccess.h"
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#include "trace.h"
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#include "trace-s390.h"
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static int handle_lctlg(struct kvm_vcpu *vcpu)
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{
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@ -138,6 +139,8 @@ static int handle_stop(struct kvm_vcpu *vcpu)
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vcpu->stat.exit_stop_request++;
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spin_lock_bh(&vcpu->arch.local_int.lock);
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trace_kvm_s390_stop_request(vcpu->arch.local_int.action_bits);
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if (vcpu->arch.local_int.action_bits & ACTION_RELOADVCPU_ON_STOP) {
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vcpu->arch.local_int.action_bits &= ~ACTION_RELOADVCPU_ON_STOP;
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rc = SIE_INTERCEPT_RERUNVCPU;
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@ -19,6 +19,7 @@
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#include <asm/uaccess.h>
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#include "kvm-s390.h"
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#include "gaccess.h"
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#include "trace-s390.h"
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static int psw_extint_disabled(struct kvm_vcpu *vcpu)
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{
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@ -130,6 +131,8 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
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case KVM_S390_INT_EMERGENCY:
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VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp emerg");
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vcpu->stat.deliver_emergency_signal++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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inti->emerg.code, 0);
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rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1201);
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if (rc == -EFAULT)
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exception = 1;
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@ -152,6 +155,8 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
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case KVM_S390_INT_EXTERNAL_CALL:
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VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp ext call");
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vcpu->stat.deliver_external_call++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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inti->extcall.code, 0);
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rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1202);
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if (rc == -EFAULT)
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exception = 1;
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@ -175,6 +180,8 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
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VCPU_EVENT(vcpu, 4, "interrupt: sclp parm:%x",
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inti->ext.ext_params);
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vcpu->stat.deliver_service_signal++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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inti->ext.ext_params, 0);
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rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2401);
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if (rc == -EFAULT)
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exception = 1;
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@ -198,6 +205,9 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
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VCPU_EVENT(vcpu, 4, "interrupt: virtio parm:%x,parm64:%llx",
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inti->ext.ext_params, inti->ext.ext_params2);
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vcpu->stat.deliver_virtio_interrupt++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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inti->ext.ext_params,
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inti->ext.ext_params2);
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rc = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2603);
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if (rc == -EFAULT)
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exception = 1;
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@ -229,6 +239,8 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
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case KVM_S390_SIGP_STOP:
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VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu stop");
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vcpu->stat.deliver_stop_signal++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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0, 0);
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__set_intercept_indicator(vcpu, inti);
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break;
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@ -236,12 +248,16 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
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VCPU_EVENT(vcpu, 4, "interrupt: set prefix to %x",
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inti->prefix.address);
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vcpu->stat.deliver_prefix_signal++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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inti->prefix.address, 0);
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kvm_s390_set_prefix(vcpu, inti->prefix.address);
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break;
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case KVM_S390_RESTART:
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VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu restart");
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vcpu->stat.deliver_restart_signal++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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0, 0);
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rc = copy_to_guest(vcpu, offsetof(struct _lowcore,
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restart_old_psw), &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
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if (rc == -EFAULT)
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@ -259,6 +275,8 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
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inti->pgm.code,
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table[vcpu->arch.sie_block->ipa >> 14]);
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vcpu->stat.deliver_program_int++;
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trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
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inti->pgm.code, 0);
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rc = put_guest_u16(vcpu, __LC_PGM_INT_CODE, inti->pgm.code);
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if (rc == -EFAULT)
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exception = 1;
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@ -515,6 +533,7 @@ int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
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inti->pgm.code = code;
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VCPU_EVENT(vcpu, 3, "inject: program check %d (from kernel)", code);
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trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, inti->type, code, 0, 1);
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spin_lock_bh(&li->lock);
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list_add(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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@ -556,6 +575,8 @@ int kvm_s390_inject_vm(struct kvm *kvm,
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kfree(inti);
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return -EINVAL;
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}
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trace_kvm_s390_inject_vm(s390int->type, s390int->parm, s390int->parm64,
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2);
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mutex_lock(&kvm->lock);
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fi = &kvm->arch.float_int;
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@ -621,6 +642,8 @@ int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
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kfree(inti);
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return -EINVAL;
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}
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trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, s390int->type, s390int->parm,
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s390int->parm64, 2);
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mutex_lock(&vcpu->kvm->lock);
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li = &vcpu->arch.local_int;
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@ -34,6 +34,7 @@
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#define CREATE_TRACE_POINTS
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#include "trace.h"
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#include "trace-s390.h"
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#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
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@ -245,6 +246,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
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void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
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{
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VCPU_EVENT(vcpu, 3, "%s", "free cpu");
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trace_kvm_s390_destroy_vcpu(vcpu->vcpu_id);
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if (!kvm_is_ucontrol(vcpu->kvm)) {
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clear_bit(63 - vcpu->vcpu_id,
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(unsigned long *) &vcpu->kvm->arch.sca->mcn);
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@ -420,6 +422,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
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goto out_free_sie_block;
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VM_EVENT(kvm, 3, "create cpu %d at %p, sie block at %p", id, vcpu,
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vcpu->arch.sie_block);
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trace_kvm_s390_create_vcpu(id, vcpu, vcpu->arch.sie_block);
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return vcpu;
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out_free_sie_block:
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@ -0,0 +1,210 @@
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#if !defined(_TRACE_KVMS390_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_KVMS390_H
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#include <linux/tracepoint.h>
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM kvm-s390
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE trace-s390
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/*
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* Trace point for the creation of the kvm instance.
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*/
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TRACE_EVENT(kvm_s390_create_vm,
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TP_PROTO(unsigned long type),
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TP_ARGS(type),
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TP_STRUCT__entry(
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__field(unsigned long, type)
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),
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TP_fast_assign(
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__entry->type = type;
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),
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TP_printk("create vm%s",
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__entry->type & KVM_VM_S390_UCONTROL ? " (UCONTROL)" : "")
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);
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/*
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* Trace points for creation and destruction of vpcus.
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*/
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TRACE_EVENT(kvm_s390_create_vcpu,
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TP_PROTO(unsigned int id, struct kvm_vcpu *vcpu,
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struct kvm_s390_sie_block *sie_block),
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TP_ARGS(id, vcpu, sie_block),
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TP_STRUCT__entry(
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__field(unsigned int, id)
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__field(struct kvm_vcpu *, vcpu)
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__field(struct kvm_s390_sie_block *, sie_block)
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),
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TP_fast_assign(
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__entry->id = id;
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__entry->vcpu = vcpu;
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__entry->sie_block = sie_block;
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),
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TP_printk("create cpu %d at %p, sie block at %p", __entry->id,
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__entry->vcpu, __entry->sie_block)
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);
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TRACE_EVENT(kvm_s390_destroy_vcpu,
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TP_PROTO(unsigned int id),
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TP_ARGS(id),
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TP_STRUCT__entry(
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__field(unsigned int, id)
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),
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TP_fast_assign(
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__entry->id = id;
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),
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TP_printk("destroy cpu %d", __entry->id)
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);
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/*
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* Trace points for injection of interrupts, either per machine or
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* per vcpu.
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*/
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#define kvm_s390_int_type \
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{KVM_S390_SIGP_STOP, "sigp stop"}, \
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{KVM_S390_PROGRAM_INT, "program interrupt"}, \
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{KVM_S390_SIGP_SET_PREFIX, "sigp set prefix"}, \
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{KVM_S390_RESTART, "sigp restart"}, \
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{KVM_S390_INT_VIRTIO, "virtio interrupt"}, \
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{KVM_S390_INT_SERVICE, "sclp interrupt"}, \
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{KVM_S390_INT_EMERGENCY, "sigp emergency"}, \
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{KVM_S390_INT_EXTERNAL_CALL, "sigp ext call"}
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TRACE_EVENT(kvm_s390_inject_vm,
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TP_PROTO(__u64 type, __u32 parm, __u64 parm64, int who),
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TP_ARGS(type, parm, parm64, who),
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TP_STRUCT__entry(
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__field(__u32, inttype)
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__field(__u32, parm)
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__field(__u64, parm64)
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__field(int, who)
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),
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TP_fast_assign(
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__entry->inttype = type & 0x00000000ffffffff;
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__entry->parm = parm;
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__entry->parm64 = parm64;
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__entry->who = who;
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),
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TP_printk("inject%s: type:%x (%s) parm:%x parm64:%llx",
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(__entry->who == 1) ? " (from kernel)" :
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(__entry->who == 2) ? " (from user)" : "",
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__entry->inttype,
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__print_symbolic(__entry->inttype, kvm_s390_int_type),
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__entry->parm, __entry->parm64)
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);
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TRACE_EVENT(kvm_s390_inject_vcpu,
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TP_PROTO(unsigned int id, __u64 type, __u32 parm, __u64 parm64, \
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int who),
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TP_ARGS(id, type, parm, parm64, who),
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TP_STRUCT__entry(
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__field(int, id)
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__field(__u32, inttype)
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__field(__u32, parm)
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__field(__u64, parm64)
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__field(int, who)
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),
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TP_fast_assign(
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__entry->id = id;
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__entry->inttype = type & 0x00000000ffffffff;
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__entry->parm = parm;
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__entry->parm64 = parm64;
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__entry->who = who;
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),
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TP_printk("inject%s (vcpu %d): type:%x (%s) parm:%x parm64:%llx",
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(__entry->who == 1) ? " (from kernel)" :
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(__entry->who == 2) ? " (from user)" : "",
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__entry->id, __entry->inttype,
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__print_symbolic(__entry->inttype, kvm_s390_int_type),
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__entry->parm, __entry->parm64)
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);
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/*
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* Trace point for the actual delivery of interrupts.
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*/
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TRACE_EVENT(kvm_s390_deliver_interrupt,
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TP_PROTO(unsigned int id, __u64 type, __u32 data0, __u64 data1),
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TP_ARGS(id, type, data0, data1),
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TP_STRUCT__entry(
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__field(int, id)
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__field(__u32, inttype)
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__field(__u32, data0)
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__field(__u64, data1)
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),
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TP_fast_assign(
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__entry->id = id;
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__entry->inttype = type & 0x00000000ffffffff;
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__entry->data0 = data0;
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__entry->data1 = data1;
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),
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TP_printk("deliver interrupt (vcpu %d): type:%x (%s) " \
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"data:%08x %016llx",
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__entry->id, __entry->inttype,
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__print_symbolic(__entry->inttype, kvm_s390_int_type),
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__entry->data0, __entry->data1)
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);
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/*
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* Trace point for resets that may be requested from userspace.
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*/
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TRACE_EVENT(kvm_s390_request_resets,
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TP_PROTO(__u64 resets),
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TP_ARGS(resets),
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TP_STRUCT__entry(
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__field(__u64, resets)
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),
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TP_fast_assign(
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__entry->resets = resets;
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),
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TP_printk("requesting userspace resets %llx",
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__entry->resets)
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);
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/*
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* Trace point for a vcpu's stop requests.
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*/
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TRACE_EVENT(kvm_s390_stop_request,
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TP_PROTO(unsigned int action_bits),
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TP_ARGS(action_bits),
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TP_STRUCT__entry(
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__field(unsigned int, action_bits)
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),
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TP_fast_assign(
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__entry->action_bits = action_bits;
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),
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TP_printk("stop request, action_bits = %08x",
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__entry->action_bits)
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);
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#endif /* _TRACE_KVMS390_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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