Hi... > thanks for the explanation > about the meaning of "preempt_count" is it as it's name implies ? > does it means "how many times the kernel has been preempted" or "how > many times this process has been preempted while it was in the > kernel" or it has nothing to do with the count and it's just a flag ? Perhaps it has same meaning like the lock depth of the BKL (Big Kernel Lock) or any other lock. In other word, kernel preemption is allowed only when preempt_count is zero. Multiple kernel execution path might increase this count, so "zero" here means all the kernel paths have left critical section. Hope it helps regards Mulyadi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
