Trond Myklebust [EMAIL PROTECTED] wrote:
AFAICS You grab the wait_queue_t lock once in down()/__mutex_lock()
order to try to take the lock (or queue the waiter if that fails), then
once more in order to pass the mutex on to the next waiter on
up()/mutex_unlock(). That is more or less the
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
