Re: mark_bh in Linux 2.6.12 kernel

From: Peter Hagervall
Date: Wed Mar 29 2006 - 08:05:57 EST


On Wed, Mar 29, 2006 at 04:31:49PM +0530, shiva g wrote:
> Here is the source
>
> static __inline__ void usbd_schedule_device_bh(struct usb_device_instance
> *device)
> {
> if (device && (device->status != USBD_CLOSING) &&
> !device->device_bh.sync) {
> queue_task(&device->device_bh, &tq_immediate);
> mark_bh(IMMEDIATE_BH);
> }
> }
>
> Also,in the below code, will replacing "schedule_task" simply by
> "schedule_work" work?
> static __inline__ void usbd_schedule_function_bh(struct usb_device_instance
> *device)
> {
> if (device && (device->status != USBD_CLOSING) &&
> !device->function_bh.sync) {
> schedule_task(&device->function_bh);
> }
>

Have a look at http://lwn.net/images/pdf/LDD3/ch10.pdf

It should answer your questions.

Peter

--
Peter Hagervall......................email: hager@xxxxxxxxx
Department of Computing Science........tel: +46(0)90 786 7018
University of Umeå, SE-901 87 Umeå.....fax: +46(0)90 786 6126
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