On Wednesday 12 December 2007, Sumudu Nishantha wrote: > Hi all, > > I want to send the data to kernel space and wait till > the interrupt finishes.(PCI dma transfer) > > I could do it using a shared variable between user and > kernel spaces. Then polling is done in the user space > checking the shared variable. > > But this is not an effective way. > I want to use wait/wakeup method for this. > ( wait in the user space and wake up the user > space process in the interrupt routine). > It is possible to sychronize the kernel/user spaces > in this way? > > Can anyone help me with this? > > Thanx in advance. > > Sumudu Not sure if completely understood your question but I believe your looking for wait queues. Just check "Linux Device Drivers" (http://lwn.net/Kernel/LDD3/), chapter 6 "Advanced Char Driver Operation". Hope it helps -- Luís Henriques -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
