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| author |   Sean Christopherson <seanjc@google.com> | 2022-05-02 00:07:33 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2022-06-08 04:47:01 -0400 |
| commit | 2d61391270a3ceb95b3dd536ea13002e653323b6 (patch) | |
| tree | a7f52639130aa24010f774dadbf36b4e7eee6f7a /arch/x86/kvm/trace.h | |
| parent | KVM: x86: Print error code in exception injection tracepoint iff valid (diff) | |
| download | linux-dev-2d61391270a3ceb95b3dd536ea13002e653323b6.tar.xz linux-dev-2d61391270a3ceb95b3dd536ea13002e653323b6.zip | |
KVM: x86: Differentiate Soft vs. Hard IRQs vs. reinjected in tracepoint
In the IRQ injection tracepoint, differentiate between Hard IRQs and Soft
"IRQs", i.e. interrupts that are reinjected after incomplete delivery of
a software interrupt from an INTn instruction. Tag reinjected interrupts
as such, even though the information is usually redundant since soft
interrupts are only ever reinjected by KVM. Though rare in practice, a
hard IRQ can be reinjected.
Signed-off-by: Sean Christopherson <seanjc@google.com>
[MSS: change "kvm_inj_virq" event "reinjected" field type to bool]
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Message-Id: <9664d49b3bd21e227caa501cff77b0569bebffe2.1651440202.git.maciej.szmigiero@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/trace.h')
| -rw-r--r-- | arch/x86/kvm/trace.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index 385436d12024..fd28dd40b813 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -333,18 +333,24 @@ TRACE_EVENT_KVM_EXIT(kvm_exit); * Tracepoint for kvm interrupt injection: */ TRACE_EVENT(kvm_inj_virq, - TP_PROTO(unsigned int irq), - TP_ARGS(irq), + TP_PROTO(unsigned int vector, bool soft, bool reinjected), + TP_ARGS(vector, soft, reinjected), TP_STRUCT__entry( - __field( unsigned int, irq ) + __field( unsigned int, vector ) + __field( bool, soft ) + __field( bool, reinjected ) ), TP_fast_assign( - __entry->irq = irq; + __entry->vector = vector; + __entry->soft = soft; + __entry->reinjected = reinjected; ), - TP_printk("irq %u", __entry->irq) + TP_printk("%s 0x%x%s", + __entry->soft ? "Soft/INTn" : "IRQ", __entry->vector, + __entry->reinjected ? " [reinjected]" : "") ); #define EXS(x) { x##_VECTOR, "#" #x } |