Benjamin LaHaise <[EMAIL PROTECTED]> wrote: > > What about the use of atomic operations on frv? Are they more lightweight > than a semaphore, making for a better fastpath?
What do you mean? Atomic ops don't compare to semaphores. On FRV atomic ops don't disable interrupts; they reserve one of the eight conditional execution flags at compile time and that flag is cleared by entry to an exception, thus aborting the write instruction. See: Documentation/fujitsu/frv/atomic-ops.txt I could try and improve the fastpath on the semaphores for FRV - and perhaps should - but I implemented the semaphores before I'd thought of the clever way to do atomic ops. David - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html