Alan Cox <[email protected]> wrote:
> Better meaningful example would be barriers versus an IRQ handler. Which
> leads nicely onto section 2
Yes, except that I can't think of one that's feasible that doesn't have to do
with I/O - which isn't a problem if you are using the proper accessor
functions.
Such an example has to involve more than one CPU, because you don't tend to
get memory/memory ordering problems on UP.
The obvious one might be circular buffers, except there's no problem there
provided you have a memory barrier between accessing the buffer and updating
your pointer into it.
David
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