Hi,
spin_locks are busy-looping locks, they needssanother processor to help them to escape the busy loop. So, I think spin_locks are useless for a single processor embedded system. Is it right ?
regards, Saturn
spin_lock for the embedded systems !
Feb 28, 2005
2 Replies
No. Some embedded systems have interrupts too...
Andrew
But spin_lock() in the include/linux/spin_lock.h is nothing to do if CONFIG_SMP does not define. So, if spin_lock_bh() is invoked, it just disable BH but not lock the critical session. Right ?
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