From b9d72215248789abdd1e2bfce746eff2eddd67fc Mon Sep 17 00:00:00 2001
From: =?utf8?q?Llu=C3=ADs=20Vilanova?= <vilanova@ac.upc.edu>
Date: Mon, 19 Sep 2016 14:55:13 +0200
Subject: [PATCH] trace: Add event "guest_cpu_enter"
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Signals the hot-plugging of a new virtual (guest) CPU.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-id: 147428971313.15111.18023030883528426840.stgit@fimbulvetr.bsc.es
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 trace-events           | 8 ++++++++
 trace/control-target.c | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/trace-events b/trace-events
index a45dc562a0..0492c960db 100644
--- a/trace-events
+++ b/trace-events
@@ -140,6 +140,14 @@ colo_filter_rewriter_conn_offset(uint32_t offset) ": offset=%u\n"
 
 ### Guest events, keep at bottom
 
+
+## vCPU
+
+# Hot-plug a new virtual (guest) CPU
+#
+# Targets: all
+vcpu guest_cpu_enter(void)
+
 # @vaddr: Access' virtual address.
 # @info : Access' information (see below).
 #
diff --git a/trace/control-target.c b/trace/control-target.c
index 3b7d99b44c..52fcce5a00 100644
--- a/trace/control-target.c
+++ b/trace/control-target.c
@@ -9,6 +9,7 @@
 
 #include "qemu/osdep.h"
 #include "cpu.h"
+#include "trace.h"
 #include "trace/control.h"
 #include "translate-all.h"
 
@@ -117,4 +118,6 @@ void trace_init_vcpu(CPUState *vcpu)
             }
         }
     }
+
+    trace_guest_cpu_enter(vcpu);
 }
-- 
2.39.5