[Qemu-devel] [RFC][PATCH 4/5] trace-event

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

trace-event : QMP interface to change state of a trace-event.
(Analogous to hmp command : trace-event )

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 7e95f4e..f2008e8 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -761,6 +761,38 @@ Example:
 
 Note: This command must be issued before issuing any other command.
 
+EQMP
+
+    {
+        .name       = "trace-event",
+        .args_type  = "name:s,option:b",
+        .params     = "name on|off",
+        .help       = "changes state of a specific trace event",
+        .user_print = monitor_user_noop,
+        .mhandler.cmd_new = do_change_trace_event_state_qmp,
+    },
+
+SQMP
+trace-event
+-----------
+
+Change state of a trace-event.
+
+Arguments:
+
+- "name": name of trace-event (json-string)
+- "enable": New state to be set for the trace-event (json-bool)
+
+Example:
+
+-> { "execute": "trace-event", "arguments": { "name": "ABC", "enable":false } }
+<- { "return": {} }
+
+Notes:
+
+(1) The 'query-trace-events' command should be used to check the new state
+    of the trace-event.
+
 3. Query Commands
 =================
 
-- 
1.7.2.3



-- 
Prerna Saxena

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