Commit 7b46268d authored by Radim Krčmář's avatar Radim Krčmář Committed by Paolo Bonzini

KVM: trace kvm_ple_window grow/shrink

Tracepoint for dynamic PLE window, fired on every potential change.
Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b4a2d31d
......@@ -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 */
......
......@@ -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);
}
/*
......
......@@ -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);
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