>>>>> "Sonawane" == Sonawane, Rahul (Rahul) <sonawane@avaya.com> writes: Sonawane> Let me ask the other way. If a real-time process(SHED_FIFO) Sonawane> is running and it needs some IO to be done ,in that case Sonawane> will it go in the wait queue or it will just continue Sonawane> executing till it finishes without giving other processes Sonawane> any chance. Thanks for your response, Rahul Depends, but in general the thread, which performs I/O will block, waiting for the I/O to finish, thus allowing other threads to run. Sometimes (with PIO) it is possible for the thread to to all the work itself, without blocking. While being incredibly stupid, nevertheless there may exist drivers written that way or devices, which do not allow other implementation (e.g. have no interrupts). In that case no other thread will run. ~velco PS. For the second case, one may create a dedicated driver thread in order to compensate for the lack of parallellism in the device and allow the original real-time thread to block. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
