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fsdev: add IO throttle support to fsdev devices

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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>
This commit is contained in:
Pradeep Jagadeesh 2017-02-28 10:31:46 +01:00 • committed by Greg Kurz
parent 4bae2b397f
commit b8bbdb886e
9 changed files with 258 additions and 3 deletions
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5
hw/9pfs/9p.c
View file

@ -3529,6 +3529,10 @@ int v9fs_device_realize_common(V9fsState *s, Error **errp)
error_setg(errp, "share path %s is not a directory", fse->path);
goto out;
}
s->ctx.fst = &fse->fst;
fsdev_throttle_init(s->ctx.fst);
v9fs_path_free(&path);
rc = 0;
@ -3549,6 +3553,7 @@ void v9fs_device_unrealize_common(V9fsState *s, Error **errp)
if (s->ops->cleanup) {
s->ops->cleanup(&s->ctx);
}
fsdev_throttle_cleanup(s->ctx.fst);
g_free(s->tag);
g_free(s->ctx.fs_root);
}