[Qemu-devel] [PATCH RFC v2 09/12] VMState test: update period of vmstate testing process

[Sanidhya Kashyap <sanidhya.iiith@gmail.com>]

No particular change, except variable name. Since I am not modifying other
variables, so I have not made the command generic.

Signed-off-by: Sanidhya Kashyap <sanidhya.iiith@gmail.com>
---
 qapi-schema.json | 12 ++++++++++++
 qmp-commands.hx  | 23 +++++++++++++++++++++++
 savevm.c         | 13 +++++++++++++
 3 files changed, 48 insertions(+)

diff --git a/qapi-schema.json b/qapi-schema.json
index a12872f..13e922e 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3562,3 +3562,15 @@
 # Since 2.2
 ##
 { 'command': 'query-test-vmstates', 'returns': 'VMStateLogStateInfo' }
+
+##
+# @test-vmstates-set-period
+#
+# sets the sleep interval between iterations of the vmstate testing process
+#
+# @period: the updated sleep interval value (in milliseconds)
+#
+# Since 2.2
+##
+{ 'command' : 'test-vmstates-set-period',
+  'data'    : { 'period': 'int' } }
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 0a40a88..2f019b0 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -3842,3 +3842,26 @@ Example:
             "iterations": 100,
             "period": 100 } }
 EQMP
+
+    {
+        .name       = "test-vmstates-set-period",
+        .args_type  = "period:i",
+        .mhandler.cmd_new = qmp_marshal_input_test_vmstates_set_period,
+    },
+
+SQMP
+test-vmstates-set-period
+------------------------
+
+Update the sleep interval for the remaining iterations
+
+Arguments:
+
+- "period": the updated sleep interval between iterations (json-int)
+
+Example:
+
+-> { "execute": "test-vmstates-set-period", "arguments": { "period": 1024 } }
+<- { "return": {} }
+EQMP
+
diff --git a/savevm.c b/savevm.c
index 797be57..d5fb93b 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1470,6 +1470,19 @@ VMStateLogStateInfo *qmp_query_test_vmstates(Error **errp)
     return log_info;
 }
 
+void qmp_test_vmstates_set_period(int64_t period, Error **errp)
+{
+    VMStateLogState *v = vmstate_current_state();
+    if (period < TEST_VMSTATE_MIN_INTERVAL_MS ||
+        period > TEST_VMSTATE_MAX_INTERVAL_MS) {
+        error_setg(errp, "sleep interval (period) value must be "
+                   "in the defined range [%d, %d](ms)\n",
+                   TEST_VMSTATE_MIN_INTERVAL_MS, TEST_VMSTATE_MAX_INTERVAL_MS);
+        return;
+    }
+    v->period = period;
+}
+
 void qmp_xen_save_devices_state(const char *filename, Error **errp)
 {
     QEMUFile *f;
-- 
1.9.3