b8bbdb886e
This patchset adds the throttle support for the 9p-local driver. For now this functionality can be enabled only through qemu cli options. QMP interface and support to other drivers need further extensions. To make it simple for other 9p drivers, the throttle code has been put in separate files. Signed-off-by: Pradeep Jagadeesh <pradeep.jagadeesh@huawei.com> Reviewed-by: Alberto Garcia <berto@igalia.com> (pass extra NULL CoMutex * argument to qemu_co_queue_wait(), added options to qemu-options.hx, Greg Kurz) Signed-off-by: Greg Kurz <groug@kaod.org>
162 lines
5.0 KiB
C
162 lines
5.0 KiB
C
/*
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* 9p
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/config-file.h"
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#include "qemu/option.h"
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#include "qemu/module.h"
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static QemuOptsList qemu_fsdev_opts = {
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.name = "fsdev",
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.implied_opt_name = "fsdriver",
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.head = QTAILQ_HEAD_INITIALIZER(qemu_fsdev_opts.head),
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.desc = {
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{
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.name = "fsdriver",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "path",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "security_model",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "writeout",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "readonly",
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.type = QEMU_OPT_BOOL,
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}, {
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.name = "socket",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "sock_fd",
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.type = QEMU_OPT_NUMBER,
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}, {
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.name = "throttling.iops-total",
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.type = QEMU_OPT_NUMBER,
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.help = "limit total I/O operations per second",
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}, {
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.name = "throttling.iops-read",
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.type = QEMU_OPT_NUMBER,
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.help = "limit read operations per second",
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}, {
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.name = "throttling.iops-write",
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.type = QEMU_OPT_NUMBER,
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.help = "limit write operations per second",
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}, {
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.name = "throttling.bps-total",
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.type = QEMU_OPT_NUMBER,
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.help = "limit total bytes per second",
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}, {
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.name = "throttling.bps-read",
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.type = QEMU_OPT_NUMBER,
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.help = "limit read bytes per second",
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}, {
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.name = "throttling.bps-write",
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.type = QEMU_OPT_NUMBER,
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.help = "limit write bytes per second",
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}, {
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.name = "throttling.iops-total-max",
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.type = QEMU_OPT_NUMBER,
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.help = "I/O operations burst",
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}, {
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.name = "throttling.iops-read-max",
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.type = QEMU_OPT_NUMBER,
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.help = "I/O operations read burst",
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}, {
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.name = "throttling.iops-write-max",
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.type = QEMU_OPT_NUMBER,
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.help = "I/O operations write burst",
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}, {
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.name = "throttling.bps-total-max",
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.type = QEMU_OPT_NUMBER,
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.help = "total bytes burst",
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}, {
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.name = "throttling.bps-read-max",
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.type = QEMU_OPT_NUMBER,
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.help = "total bytes read burst",
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}, {
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.name = "throttling.bps-write-max",
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.type = QEMU_OPT_NUMBER,
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.help = "total bytes write burst",
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}, {
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.name = "throttling.iops-total-max-length",
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.type = QEMU_OPT_NUMBER,
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.help = "length of the iops-total-max burst period, in seconds",
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}, {
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.name = "throttling.iops-read-max-length",
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.type = QEMU_OPT_NUMBER,
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.help = "length of the iops-read-max burst period, in seconds",
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}, {
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.name = "throttling.iops-write-max-length",
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.type = QEMU_OPT_NUMBER,
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.help = "length of the iops-write-max burst period, in seconds",
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}, {
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.name = "throttling.bps-total-max-length",
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.type = QEMU_OPT_NUMBER,
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.help = "length of the bps-total-max burst period, in seconds",
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}, {
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.name = "throttling.bps-read-max-length",
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.type = QEMU_OPT_NUMBER,
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.help = "length of the bps-read-max burst period, in seconds",
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}, {
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.name = "throttling.bps-write-max-length",
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.type = QEMU_OPT_NUMBER,
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.help = "length of the bps-write-max burst period, in seconds",
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}, {
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.name = "throttling.iops-size",
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.type = QEMU_OPT_NUMBER,
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.help = "when limiting by iops max size of an I/O in bytes",
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},
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{ /*End of list */ }
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},
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};
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static QemuOptsList qemu_virtfs_opts = {
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.name = "virtfs",
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.implied_opt_name = "fsdriver",
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.head = QTAILQ_HEAD_INITIALIZER(qemu_virtfs_opts.head),
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.desc = {
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{
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.name = "fsdriver",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "path",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "mount_tag",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "security_model",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "writeout",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "readonly",
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.type = QEMU_OPT_BOOL,
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}, {
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.name = "socket",
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.type = QEMU_OPT_STRING,
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}, {
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.name = "sock_fd",
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.type = QEMU_OPT_NUMBER,
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},
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{ /*End of list */ }
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},
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};
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static void fsdev_register_config(void)
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{
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qemu_add_opts(&qemu_fsdev_opts);
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qemu_add_opts(&qemu_virtfs_opts);
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}
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opts_init(fsdev_register_config);
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