On Wed, Oct 08, 2014 at 10:23:32PM +0530, Jeshwanth Kumar N K wrote: > My case was: I have a hall sensor connected to Beaglebone black, And Userspace > needed a wakeup once the interrupt occur (example: every rising edge of GPIO). > Before that, the program will register (ioctl) the User space task pointer with > my kernel module, then my kernel module start sending signal for every > interrupt occur. We can consider roughly around 100 to 200 interrupts per > second maximum. ( I have not done this, but may be we can consider kernel will > get notified when userspace program stops. so that it will not send any > signal). So for this case, any other alternative implementation ? select() on the GPIO sysfs file instead of a custom ioctl? And what do you do in userspace with that information? greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
