From patchwork Thu Oct 21 09:37:28 2010
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Subject: [RFC,2/5] query-trace-events
Date: Wed, 20 Oct 2010 23:37:28 -0000
From: Prerna Saxena <prerna@linux.vnet.ibm.com>
X-Patchwork-Id: 68559
Message-Id: <20101021150728.2b11f5fc@zephyr>
To: qemu-devel <qemu-devel@nongnu.org>
Cc: Mahesh <mahesh@linux.vnet.ibm.com>,
 Ananth Narayan <ananth@linux.vnet.ibm.com>,
 Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>,
 Luiz Capitulino <lcapitulino@redhat.com>

'query-trace-events' : QMP interface to display currently available 
trace-events with their state.
( Analogous to hmp command : info trace-events )

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>

---
qmp-commands.hx |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/qmp-commands.hx b/qmp-commands.hx
index f289064..e079eef 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1590,3 +1590,35 @@ Example:
    }
 
 EQMP
+
+SQMP
+query-trace-events
+------------------
+
+Show all available trace-events & their state.
+
+Returns a json-array of json-objects containing the following data:
+
+- "name": Name of Trace-event (json-string)
+- "event_id": Event ID of Trace-event (json-int)
+- "state": State of trace-event (json-bool)
+
+Example:
+
+-> { "execute": "query-trace-events" }
+<- {
+      "return":[
+         {
+            "name": "qemu_malloc",
+            "event_id": 0,
+            "state": false
+         },
+         {
+            "name": "qemu_realloc",
+            "event_id": 1,
+            "state": false
+         },
+      ]
+   }
+
+EQMP