[Qemu-devel] [Tracing] [RFC PATCH 2/2] : Documentation for QMP interfaces

[Prerna Saxena <prerna@linux.vnet.ibm.com>]

[PATCH 2/2] Add documentation for QMP commands: query-trace & query-trace-events.


Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
---
 qmp-commands.hx |   53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 53 insertions(+), 0 deletions(-)

diff --git a/qmp-commands.hx b/qmp-commands.hx
index 793cf1c..9a48984 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1539,3 +1539,56 @@ Example:
 
 EQMP
 
+SQMP
+query-trace
+-------------
+
+Show contents of trace buffer.
+
+Returns a set of json-objects containing the following data:
+
+- "Event": Event ID for the trace-event(json-int)
+- "arg1 .. arg6": Arguments logged by the trace-event (json-int)
+
+Example:
+
+-> { "execute": "query-trace" }
+<- {
+      "return":{
+         "Event": 22,
+         "arg6": 0,
+         "arg5": 0,
+         "arg4": 0,
+         "arg3": 0,
+         "arg2": 80,
+         "arg1": 886
+       }
+   }
+
+EQMP
+
+SQMP
+query-trace-events
+------------------
+
+Show all available trace-events & their state.
+
+Returns a set of json-objects containing the following data:
+
+- "name": Name of Trace-event (json-string)
+- "state": State of trace-event [ '0': inactive; '1':active  ] (json-int)
+- "eventID": Event ID of Trace-event (json-int)
+
+Example:
+
+-> { "execute": "query-trace-events" }
+<- {
+      "return":{
+         "name": "qemu_malloc",
+         "state": 0,
+         "eventID": 0
+      }
+   }
+
+EQMP
+
-- 
1.7.2.2



-- 
Prerna Saxena

Linux Technology Centre,
IBM Systems and Technology Lab,
Bangalore, India