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| author | Radim Krčmář <rkrcmar@redhat.com> | 2014-08-21 16:08:09 (GMT) |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-08-21 16:45:23 (GMT) |
| commit | 7b46268d29543e313e731606d845e65c17f232e4 (patch) | |
| tree | 86571a9b8ed4dd0972a15cec127945b1a2138807 | |
| parent | b4a2d31da812ce03efaf5d30c6b9d39c1cbd18d8 (diff) | |
| download | linux-7b46268d29543e313e731606d845e65c17f232e4.tar.xz | |
KVM: trace kvm_ple_window grow/shrink
Tracepoint for dynamic PLE window, fired on every potential change.
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/trace.h | 30 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 1 |
3 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index e850a7d..1742dfb 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -848,6 +848,36 @@ TRACE_EVENT(kvm_track_tsc, __print_symbolic(__entry->host_clock, host_clocks)) ); +TRACE_EVENT(kvm_ple_window, + TP_PROTO(bool grow, unsigned int vcpu_id, int new, int old), + TP_ARGS(grow, vcpu_id, new, old), + + TP_STRUCT__entry( + __field( bool, grow ) + __field( unsigned int, vcpu_id ) + __field( int, new ) + __field( int, old ) + ), + + TP_fast_assign( + __entry->grow = grow; + __entry->vcpu_id = vcpu_id; + __entry->new = new; + __entry->old = old; + ), + + TP_printk("vcpu %u: ple_window %d (%s %d)", + __entry->vcpu_id, + __entry->new, + __entry->grow ? "grow" : "shrink", + __entry->old) +); + +#define trace_kvm_ple_window_grow(vcpu_id, new, old) \ + trace_kvm_ple_window(true, vcpu_id, new, old) +#define trace_kvm_ple_window_shrink(vcpu_id, new, old) \ + trace_kvm_ple_window(false, vcpu_id, new, old) + #endif /* CONFIG_X86_64 */ #endif /* _TRACE_KVM_H */ diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index baeac7f..661abc2 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5738,6 +5738,8 @@ static void grow_ple_window(struct kvm_vcpu *vcpu) if (vmx->ple_window != old) vmx->ple_window_dirty = true; + + trace_kvm_ple_window_grow(vcpu->vcpu_id, vmx->ple_window, old); } static void shrink_ple_window(struct kvm_vcpu *vcpu) @@ -5750,6 +5752,8 @@ static void shrink_ple_window(struct kvm_vcpu *vcpu) if (vmx->ple_window != old) vmx->ple_window_dirty = true; + + trace_kvm_ple_window_shrink(vcpu->vcpu_id, vmx->ple_window, old); } /* diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 575d3fc6..c10408e 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7673,3 +7673,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_invlpga); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_skinit); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_intercepts); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_write_tsc_offset); +EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ple_window); |