mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-13 12:06:49 +00:00
6cddd432e3
This patch removes the famous action_bits and moves the handling of SIGP STOP AND STORE STATUS directly into the SIGP STOP interrupt. The new local interrupt infrastructure is used to track pending stop requests. STOP irqs are the only irqs that don't get actively delivered. They remain pending until the stop function is executed (=stop intercept). If another STOP irq is already pending, -EBUSY will now be returned (needed for the SIGP handling code). Migration of pending SIGP STOP (AND STORE STATUS) orders should now be supported out of the box. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
275 lines
6.4 KiB
C
275 lines
6.4 KiB
C
#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 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_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, __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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__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 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 @ %p)\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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#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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