multifd: Add multifd-zlib-level parameter
This parameter specifies the zlib compression level. The next patch
will put it to use.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
diff --git a/qapi/migration.json b/qapi/migration.json
index 40950ef..468a9d9 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -602,6 +602,13 @@
# @multifd-compression: Which compression method to use.
# Defaults to none. (Since 5.0)
#
+# @multifd-zlib-level: Set the compression level to be used in live
+# migration, the compression level is an integer between 0
+# and 9, where 0 means no compression, 1 means the best
+# compression speed, and 9 means best compression ratio which
+# will consume more CPU.
+# Defaults to 1. (Since 5.0)
+#
# Since: 2.4
##
{ 'enum': 'MigrationParameter',
@@ -614,7 +621,8 @@
'downtime-limit', 'x-checkpoint-delay', 'block-incremental',
'multifd-channels',
'xbzrle-cache-size', 'max-postcopy-bandwidth',
- 'max-cpu-throttle', 'multifd-compression' ] }
+ 'max-cpu-throttle', 'multifd-compression',
+ 'multifd-zlib-level' ] }
##
# @MigrateSetParameters:
@@ -707,6 +715,13 @@
# @multifd-compression: Which compression method to use.
# Defaults to none. (Since 5.0)
#
+# @multifd-zlib-level: Set the compression level to be used in live
+# migration, the compression level is an integer between 0
+# and 9, where 0 means no compression, 1 means the best
+# compression speed, and 9 means best compression ratio which
+# will consume more CPU.
+# Defaults to 1. (Since 5.0)
+#
# Since: 2.4
##
# TODO either fuse back into MigrationParameters, or make
@@ -733,7 +748,8 @@
'*xbzrle-cache-size': 'size',
'*max-postcopy-bandwidth': 'size',
'*max-cpu-throttle': 'int',
- '*multifd-compression': 'MultiFDCompression' } }
+ '*multifd-compression': 'MultiFDCompression',
+ '*multifd-zlib-level': 'int' } }
##
# @migrate-set-parameters:
@@ -846,6 +862,13 @@
# @multifd-compression: Which compression method to use.
# Defaults to none. (Since 5.0)
#
+# @multifd-zlib-level: Set the compression level to be used in live
+# migration, the compression level is an integer between 0
+# and 9, where 0 means no compression, 1 means the best
+# compression speed, and 9 means best compression ratio which
+# will consume more CPU.
+# Defaults to 1. (Since 5.0)
+#
# Since: 2.4
##
{ 'struct': 'MigrationParameters',
@@ -870,7 +893,8 @@
'*xbzrle-cache-size': 'size',
'*max-postcopy-bandwidth': 'size',
'*max-cpu-throttle': 'uint8',
- '*multifd-compression': 'MultiFDCompression' } }
+ '*multifd-compression': 'MultiFDCompression',
+ '*multifd-zlib-level': 'uint8' } }
##
# @query-migrate-parameters:
