Re: where is __memory_barrier in kernel ?

You can see linux/Documentation/memory_barriers.txt about barriers in common i think, that specific definition of __memory_barrier depend on architecture. What file did you found this definition in? 2011/3/6 loody <miloody@gmail.com>

hi all: I grep kernel source and found cpu_relax is defined as __memory_barrier(), which seems not defined in kernel source. At beginning I think it may be the gcc build-in functions, but I cannot find in the gcc document. Where and what is that used for?

-- Regards, miloody

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