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KVM: x86: Add information about pending requests to kvm_exit tracepoint

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Print pending requests in the kvm_exit tracepoint, which allows userspace
to gather information on how often KVM interrupts vCPUs due to specific
requests.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20240910200350.264245-3-mlevitsk@redhat.com
[sean: massage changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Maxim Levitsky 2024-09-10 16:03:49 -04:00 committed by Sean Christopherson
parent 3e633e7e7d
commit 0e77b32411
1 changed files with 6 additions and 2 deletions
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8
arch/x86/kvm/trace.h
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@ -315,12 +315,14 @@ TRACE_EVENT(name, \
__field( u32, intr_info ) \
__field( u32, error_code ) \
__field( unsigned int, vcpu_id ) \
__field( u64, requests ) \
), \
\
TP_fast_assign( \
__entry->guest_rip = kvm_rip_read(vcpu); \
__entry->isa = isa; \
__entry->vcpu_id = vcpu->vcpu_id; \
__entry->requests = READ_ONCE(vcpu->requests); \
kvm_x86_call(get_exit_info)(vcpu, \
&__entry->exit_reason, \
&__entry->info1, \
@ -330,11 +332,13 @@ TRACE_EVENT(name, \
), \
\
TP_printk("vcpu %u reason %s%s%s rip 0x%lx info1 0x%016llx " \
"info2 0x%016llx intr_info 0x%08x error_code 0x%08x", \
"info2 0x%016llx intr_info 0x%08x error_code 0x%08x " \
"requests 0x%016llx", \
__entry->vcpu_id, \
kvm_print_exit_reason(__entry->exit_reason, __entry->isa), \
__entry->guest_rip, __entry->info1, __entry->info2, \
__entry->intr_info, __entry->error_code) \
__entry->intr_info, __entry->error_code, \
__entry->requests) \
)
/*