On 7 June 2016 at 15:48, Greg Kurz <gr...@kaod.org> wrote: > On Tue, 7 Jun 2016 10:20:51 +0200 > Pradeep Kiruvale <pradeepkiruv...@gmail.com> wrote: > > Hi All, > > > > I am trying to add the throttle to the virtio-9p devices using the > throttle > > APIs that are already exists in the qemu. > > > > I need help to understand the device model and where to add the > throttling. > > I am digging through the code since a week or so but failed to understand > > how to tell the driver (virtio-9p) about the throttle enablement for > this > > specific fs device. > > > > I am planning to enable and configure the throttle for that specific > device > > at > > int qemu_fsdev_add(QemuOpts *opts) in qemu-fsdev.c file. > > > > After that I would like to just add throttle facility to just > > virtio-9p-local.c (i.e read/wrote calls). > > Though there are other drivers, I just want to add to this specific > driver > > as of now. > > > > This is where I am missing the link like how to get to know the device > > configuration for this specific device throttle enabled or not and carry > > out the operations accordingly. > > > > Please help me to understand. > > > > Drivers can register a parse_opts operation to handle specific command line > options. Since you want to make this feature specific to the local driver, > then you should handle the options in local_parse_opts(), not in > qemu_fsdev_add(). > > Thanks Greg, that was helpful.
Regards, Pradeep > > Regards, > > Pradeep > > Cheers. > > -- > Greg >
