throttle: factor out duplicate code

This patch removes the redundant throttle code that was present in
block and fsdev device files. Now the common code is moved
to a single file.

Signed-off-by: Pradeep Jagadeesh <pradeep.jagadeesh@huawei.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
(fix indent nit, Greg Kurz)
Signed-off-by: Greg Kurz <groug@kaod.org>
diff --git a/blockdev.c b/blockdev.c
index 2b2f6ce..8682bd8 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -52,6 +52,7 @@
 #include "sysemu/arch_init.h"
 #include "qemu/cutils.h"
 #include "qemu/help_option.h"
+#include "qemu/throttle-options.h"
 
 static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states =
     QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states);
@@ -4007,83 +4008,11 @@
             .name = BDRV_OPT_READ_ONLY,
             .type = QEMU_OPT_BOOL,
             .help = "open drive file as read-only",
-        },{
-            .name = "throttling.iops-total",
-            .type = QEMU_OPT_NUMBER,
-            .help = "limit total I/O operations per second",
-        },{
-            .name = "throttling.iops-read",
-            .type = QEMU_OPT_NUMBER,
-            .help = "limit read operations per second",
-        },{
-            .name = "throttling.iops-write",
-            .type = QEMU_OPT_NUMBER,
-            .help = "limit write operations per second",
-        },{
-            .name = "throttling.bps-total",
-            .type = QEMU_OPT_NUMBER,
-            .help = "limit total bytes per second",
-        },{
-            .name = "throttling.bps-read",
-            .type = QEMU_OPT_NUMBER,
-            .help = "limit read bytes per second",
-        },{
-            .name = "throttling.bps-write",
-            .type = QEMU_OPT_NUMBER,
-            .help = "limit write bytes per second",
-        },{
-            .name = "throttling.iops-total-max",
-            .type = QEMU_OPT_NUMBER,
-            .help = "I/O operations burst",
-        },{
-            .name = "throttling.iops-read-max",
-            .type = QEMU_OPT_NUMBER,
-            .help = "I/O operations read burst",
-        },{
-            .name = "throttling.iops-write-max",
-            .type = QEMU_OPT_NUMBER,
-            .help = "I/O operations write burst",
-        },{
-            .name = "throttling.bps-total-max",
-            .type = QEMU_OPT_NUMBER,
-            .help = "total bytes burst",
-        },{
-            .name = "throttling.bps-read-max",
-            .type = QEMU_OPT_NUMBER,
-            .help = "total bytes read burst",
-        },{
-            .name = "throttling.bps-write-max",
-            .type = QEMU_OPT_NUMBER,
-            .help = "total bytes write burst",
-        },{
-            .name = "throttling.iops-total-max-length",
-            .type = QEMU_OPT_NUMBER,
-            .help = "length of the iops-total-max burst period, in seconds",
-        },{
-            .name = "throttling.iops-read-max-length",
-            .type = QEMU_OPT_NUMBER,
-            .help = "length of the iops-read-max burst period, in seconds",
-        },{
-            .name = "throttling.iops-write-max-length",
-            .type = QEMU_OPT_NUMBER,
-            .help = "length of the iops-write-max burst period, in seconds",
-        },{
-            .name = "throttling.bps-total-max-length",
-            .type = QEMU_OPT_NUMBER,
-            .help = "length of the bps-total-max burst period, in seconds",
-        },{
-            .name = "throttling.bps-read-max-length",
-            .type = QEMU_OPT_NUMBER,
-            .help = "length of the bps-read-max burst period, in seconds",
-        },{
-            .name = "throttling.bps-write-max-length",
-            .type = QEMU_OPT_NUMBER,
-            .help = "length of the bps-write-max burst period, in seconds",
-        },{
-            .name = "throttling.iops-size",
-            .type = QEMU_OPT_NUMBER,
-            .help = "when limiting by iops max size of an I/O in bytes",
-        },{
+        },
+
+        THROTTLE_OPTS,
+
+        {
             .name = "throttling.group",
             .type = QEMU_OPT_STRING,
             .help = "name of the block throttling group",