Hi all,
its OK to use memory barriers for avoiding software
and
hardware optimization.
But in kernel they are used in loop like
do { var=val;wmb()}while(0) loop
or in driver like
while(count --){
writeb(*(ptr++),address);
wmb();
}
why they r used in above case,
means why they used there(for direct assignment)
if anyone give details!
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