2010/10/6 Vikrant Malushte !! <malushtevikrant@xxxxxxxxx>: > hi all , > > I am writing a driver for PCIe custom device. I use character device driver > interface . > I have Linux 2.6.18 SMP kernel on test machine . > > Whenever i try to poll any device register in any ' ioctl ' ; system > becomes unresponsive as long as polling is continued. > I have not acquired any lock while polling the device register . > > If i use ' unlocked_ioctl ' entry point then above problem is not observed . > > Is this problem due to Big Kernel Lock in ' ioctl ' entry point ? > What precautions one has to take when holding a BKL ? > maybe this can help u. http://lwn.net/Articles/119652/ > Thanks in advance . > > > > > > Regards, > Vikrant Malushte . > > > -- Best Regards Lin -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
