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authorWanpeng Li <wanpeng.li@hotmail.com>2015-09-03 17:07:39 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2015-09-06 17:33:14 +0300
commit2cbd78244fb26a06f2b8fb006b32f133451df413 (patch)
tree1fac5e7a0438045dc3036fe27ab9f177628823cb /include/trace
parentaca6ff29c4063a8d467cdee241e6b3bf7dc4a171 (diff)
downloadlinux-2cbd78244fb26a06f2b8fb006b32f133451df413.tar.xz
KVM: trace kvm_halt_poll_ns grow/shrink
Tracepoint for dynamic halt_pool_ns, fired on every potential change. Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/kvm.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index a44062da684b..0d1bc478833b 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -356,6 +356,36 @@ TRACE_EVENT(
__entry->address)
);
+TRACE_EVENT(kvm_halt_poll_ns,
+ 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: halt_poll_ns %d (%s %d)",
+ __entry->vcpu_id,
+ __entry->new,
+ __entry->grow ? "grow" : "shrink",
+ __entry->old)
+);
+
+#define trace_kvm_halt_poll_ns_grow(vcpu_id, new, old) \
+ trace_kvm_halt_poll_ns(true, vcpu_id, new, old)
+#define trace_kvm_halt_poll_ns_shrink(vcpu_id, new, old) \
+ trace_kvm_halt_poll_ns(false, vcpu_id, new, old)
+
#endif
#endif /* _TRACE_KVM_MAIN_H */