Use the new cmpxchg_emu_u8() to emulate one-byte cmpxchg() on arc.
[ paulmck: Drop two-byte support per Arnd Bergmann feedback. ]
[ paulmck: Apply feedback from Naresh Kamboju. ]
[ paulmck: Apply kernel test robot feedback. ]
[ paulmck: Apply feedback from Vineet Gupta. ]
Signed-off-by: Paul E. M
Hello!
This series provides an emulation function for one-byte cmpxchg(),
and uses it for the remaining architectures not supporting these in
hardware and not providing emulation. The emulation is in terms of
the fully ordered four-byte cmpxchg() that is supplied by all of these
architectures. T
