Hi, I would appreciate if some one could explain the difference between "completion" variables and the semaphores in Linux. As far as I can understand, both are used to provide synchronization among kernel threads. Both have similar mechanism i.e. one or more tasks wait on the completion variable (or semaphore) while another task holds it and does some work (in critical section). When the task holding the completion variable (or semaphore) is done, it signals the other task using "complete" (or "up"). This would cause the waiting tasks to wait up. So why have two different things to do the same thing? Thanks, Rajat -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
