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| author | Wanpeng Li <wanpeng.li@hotmail.com> | 2015-09-03 17:07:39 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-06 17:33:14 +0300 |
| commit | 2cbd78244fb26a06f2b8fb006b32f133451df413 (patch) | |
| tree | 1fac5e7a0438045dc3036fe27ab9f177628823cb /include/trace/events | |
| parent | aca6ff29c4063a8d467cdee241e6b3bf7dc4a171 (diff) | |
| download | linux-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/events')
| -rw-r--r-- | include/trace/events/kvm.h | 30 |
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 */ |