diff options
| author | Wei Huang <wei@redhat.com> | 2015-01-30 13:09:26 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-02-23 22:28:48 +0100 |
| commit | 91314cb0053877991fd7b4749bb4b54d6bd6992f (patch) | |
| tree | 45abedcea81e4f5201c32c2db6df2f0bc3133ef2 /arch/arm/kvm/trace.h | |
| parent | a050dfb21cc22ac0c666d52531040c1bc48184cc (diff) | |
arm/arm64: KVM: Add exit reaons to kvm_exit event tracing
This patch extends trace_kvm_exit() to include KVM exit reasons
(i.e. EC of HSR). The tracing function then dumps both exit reason
and PC of vCPU, shown as the following. Tracing tools can use this
new exit_reason field to better understand the behavior of guest VMs.
886.301252: kvm_exit: HSR_EC: 0x0024, PC: 0xfffffe0000506b28
Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/kvm/trace.h')
| -rw-r--r-- | arch/arm/kvm/trace.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/arm/kvm/trace.h b/arch/arm/kvm/trace.h index 881874b1a036..6817664b46b8 100644 --- a/arch/arm/kvm/trace.h +++ b/arch/arm/kvm/trace.h @@ -25,18 +25,22 @@ TRACE_EVENT(kvm_entry, ); TRACE_EVENT(kvm_exit, - TP_PROTO(unsigned long vcpu_pc), - TP_ARGS(vcpu_pc), + TP_PROTO(unsigned int exit_reason, unsigned long vcpu_pc), + TP_ARGS(exit_reason, vcpu_pc), TP_STRUCT__entry( + __field( unsigned int, exit_reason ) __field( unsigned long, vcpu_pc ) ), TP_fast_assign( + __entry->exit_reason = exit_reason; __entry->vcpu_pc = vcpu_pc; ), - TP_printk("PC: 0x%08lx", __entry->vcpu_pc) + TP_printk("HSR_EC: 0x%04x, PC: 0x%08lx", + __entry->exit_reason, + __entry->vcpu_pc) ); TRACE_EVENT(kvm_guest_fault, |