On Thu, 2003-02-27 at 14:47, Frank A. Uepping wrote: > Is that true that a spinlock gets undefined when compiled > on a uniprocessor system? > Thus spinlocks can't be used to provide mutual exclusion between > concurrently executing processes on a uniprocessor system, isn't is? > This is true, however, anything used in the kernel should always be programmed to deal with SMP. secondly, calls to spin_lock_irqsave() still block interrupts on a non-smp system, thereby giving mutual exclusion across interrupts. anton -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
