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70fea30195
The gmap notifier is called for changes in table entries with the notifier bit set. To diagnose performance issues, it can be useful to see what causes certain changes in the gmap. Hence, add a tracepoint in the gmap notifier. Signed-off-by: Nico Boehr <nrb@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Link: https://lore.kernel.org/r/20231009093304.2555344-3-nrb@linux.ibm.com Message-Id: <20231009093304.2555344-3-nrb@linux.ibm.com>
364 lines
8.7 KiB
C
364 lines
8.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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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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* The TRACE_SYSTEM_VAR defaults to TRACE_SYSTEM, but must be a
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* legitimate C variable. It is not exported to user space.
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*/
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#undef TRACE_SYSTEM_VAR
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#define TRACE_SYSTEM_VAR kvm_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 0x%pK, sie block at 0x%pK",
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__entry->id, __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 point for start and stop of vpcus.
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*/
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TRACE_EVENT(kvm_s390_vcpu_start_stop,
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TP_PROTO(unsigned int id, int state),
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TP_ARGS(id, state),
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TP_STRUCT__entry(
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__field(unsigned int, id)
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__field(int, state)
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),
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TP_fast_assign(
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__entry->id = id;
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__entry->state = state;
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),
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TP_printk("%s cpu %d", __entry->state ? "starting" : "stopping",
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__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_PFAULT_INIT, "pfault init"}, \
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{KVM_S390_INT_PFAULT_DONE, "pfault done"}, \
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{KVM_S390_MCHK, "machine check"}, \
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{KVM_S390_INT_CLOCK_COMP, "clock comparator"}, \
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{KVM_S390_INT_CPU_TIMER, "cpu timer"}, \
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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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#define get_irq_name(__type) \
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(__type > KVM_S390_INT_IO_MAX ? \
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__print_symbolic(__type, kvm_s390_int_type) : \
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(__type & KVM_S390_INT_IO_AI_MASK ? \
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"adapter I/O interrupt" : "subchannel I/O interrupt"))
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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, get_irq_name(__entry->inttype),
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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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TP_ARGS(id, type, parm, parm64),
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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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),
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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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),
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TP_printk("inject (vcpu %d): type:%x (%s) parm:%x parm64:%llx",
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__entry->id, __entry->inttype,
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get_irq_name(__entry->inttype), __entry->parm,
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__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, __u64 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(__u64, 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:%08llx %016llx",
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__entry->id, __entry->inttype,
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get_irq_name(__entry->inttype), __entry->data0,
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__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 char stop_irq, unsigned char flags),
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TP_ARGS(stop_irq, flags),
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TP_STRUCT__entry(
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__field(unsigned char, stop_irq)
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__field(unsigned char, flags)
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),
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TP_fast_assign(
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__entry->stop_irq = stop_irq;
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__entry->flags = flags;
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),
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TP_printk("stop request, stop irq = %u, flags = %08x",
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__entry->stop_irq, __entry->flags)
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);
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/*
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* Trace point for enabling channel I/O instruction support.
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*/
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TRACE_EVENT(kvm_s390_enable_css,
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TP_PROTO(void *kvm),
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TP_ARGS(kvm),
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TP_STRUCT__entry(
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__field(void *, kvm)
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),
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TP_fast_assign(
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__entry->kvm = kvm;
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),
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TP_printk("enabling channel I/O support (kvm @ %pK)\n",
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__entry->kvm)
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);
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/*
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* Trace point for enabling and disabling interlocking-and-broadcasting
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* suppression.
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*/
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TRACE_EVENT(kvm_s390_enable_disable_ibs,
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TP_PROTO(unsigned int id, int state),
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TP_ARGS(id, state),
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TP_STRUCT__entry(
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__field(unsigned int, id)
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__field(int, state)
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),
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TP_fast_assign(
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__entry->id = id;
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__entry->state = state;
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),
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TP_printk("%s ibs on cpu %d",
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__entry->state ? "enabling" : "disabling", __entry->id)
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);
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/*
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* Trace point for modifying ais mode for a given isc.
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*/
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TRACE_EVENT(kvm_s390_modify_ais_mode,
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TP_PROTO(__u8 isc, __u16 from, __u16 to),
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TP_ARGS(isc, from, to),
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TP_STRUCT__entry(
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__field(__u8, isc)
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__field(__u16, from)
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__field(__u16, to)
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),
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TP_fast_assign(
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__entry->isc = isc;
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__entry->from = from;
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__entry->to = to;
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),
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TP_printk("for isc %x, modifying interruption mode from %s to %s",
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__entry->isc,
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(__entry->from == KVM_S390_AIS_MODE_ALL) ?
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"ALL-Interruptions Mode" :
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(__entry->from == KVM_S390_AIS_MODE_SINGLE) ?
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"Single-Interruption Mode" : "No-Interruptions Mode",
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(__entry->to == KVM_S390_AIS_MODE_ALL) ?
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"ALL-Interruptions Mode" :
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(__entry->to == KVM_S390_AIS_MODE_SINGLE) ?
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"Single-Interruption Mode" : "No-Interruptions Mode")
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);
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/*
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* Trace point for suppressed adapter I/O interrupt.
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*/
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TRACE_EVENT(kvm_s390_airq_suppressed,
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TP_PROTO(__u32 id, __u8 isc),
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TP_ARGS(id, isc),
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TP_STRUCT__entry(
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__field(__u32, id)
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__field(__u8, isc)
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),
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TP_fast_assign(
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__entry->id = id;
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__entry->isc = isc;
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),
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TP_printk("adapter I/O interrupt suppressed (id:%x isc:%x)",
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__entry->id, __entry->isc)
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);
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/*
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* Trace point for gmap notifier calls.
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*/
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TRACE_EVENT(kvm_s390_gmap_notifier,
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TP_PROTO(unsigned long start, unsigned long end, unsigned int shadow),
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TP_ARGS(start, end, shadow),
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TP_STRUCT__entry(
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__field(unsigned long, start)
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__field(unsigned long, end)
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__field(unsigned int, shadow)
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),
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TP_fast_assign(
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__entry->start = start;
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__entry->end = end;
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__entry->shadow = shadow;
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),
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TP_printk("gmap notified (start:0x%lx end:0x%lx shadow:%d)",
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__entry->start, __entry->end, __entry->shadow)
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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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