[Qemu-devel] [PATCH v2 3/3] qmp/hmp: Add throttle ratio to query-migrate and info migrate

[Jason J. Herne]

Report throttle ratio in info migrate and query-migrate responses when cpu
throttling is active.

Signed-off-by: Jason J. Herne <jjhe...@linux.vnet.ibm.com>
---
 hmp.c                 | 5 +++++
 migration/migration.c | 5 +++++
 qapi-schema.json      | 3 ++-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/hmp.c b/hmp.c
index e17852d..cb3c137 100644
--- a/hmp.c
+++ b/hmp.c
@@ -229,6 +229,11 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
                        info->xbzrle_cache->overflow);
     }
 
+    if (info->has_x_cpu_throttle_ratio) {
+        monitor_printf(mon, "cpu throttle ratio : %0.2f\n",
+                       info->x_cpu_throttle_ratio);
+    }
+
     qapi_free_MigrationInfo(info);
     qapi_free_MigrationCapabilityStatusList(caps);
 }
diff --git a/migration/migration.c b/migration/migration.c
index c9545df..98cc03a 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -263,6 +263,11 @@ MigrationInfo *qmp_query_migrate(Error **errp)
             info->disk->total = blk_mig_bytes_total();
         }
 
+        if (cpu_throttle_active(first_cpu)) {
+            info->has_x_cpu_throttle_ratio = true;
+            info->x_cpu_throttle_ratio = cpu_throttle_get_ratio(first_cpu);
+        }
+
         get_xbzrle_cache_stats(info);
         break;
     case MIGRATION_STATUS_COMPLETED:
diff --git a/qapi-schema.json b/qapi-schema.json
index f97ffa1..5e732e0 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -483,7 +483,8 @@
            '*total-time': 'int',
            '*expected-downtime': 'int',
            '*downtime': 'int',
-           '*setup-time': 'int'} }
+           '*setup-time': 'int',
+           '*x-cpu-throttle-ratio': 'number'} }
 
 ##
 # @query-migrate
-- 
1.9.1