On Thu, Oct 1, 2020 at 2:30 AM Omkar Maslekar <omkar.masle...@intel.com> wrote: > > rte_cldemote is similar to a prefetch hint - in reverse. cldemote(addr) > enables software to hint to hardware that line is likely to be shared. > Useful in core-to-core communications where cache-line is likely to be > shared. ARM and PPC implementation is provided with NOP and can be added > if any equivalent instructions could be used for implementation on those > architectures. > > Signed-off-by: Omkar Maslekar <omkar.masle...@intel.com> > Acked-by: Bruce Richardson <bruce.richard...@intel.com>
I find this "rte_cldemote" name too close to the Intel instruction, but I can see no complaint from other arch maintainers, so I guess everyone is happy with it. In any case, this is a new API, so it should be marked experimental. As for unit tests, not sure there is much to do, maybe rename test_prefetch.c and call this new API too, wdyt? -- David Marchand
