Konstantin Belousov 8954a9a4e6 Add the atomic_thread_fence() family of functions with intent to ... provide a semantic defined by the C11 fences with corresponding memory_order. atomic_thread_fence_acq() gives r | r, w, where r and w are read and write accesses, and | denotes the fence itself. atomic_thread_fence_rel() is r, w | w. atomic_thread_fence_acq_rel() is the combination of the acquire and release in single operation. Note that reads after the acq+rel fence could be made visible before writes preceeding the fence. atomic_thread_fence_seq_cst() orders all accesses before/after the fence, and the fence itself is globally ordered against other sequentially consistent atomic operations. Reviewed by: alc Discussed with: bde Sponsored by: The FreeBSD Foundation MFC after: 3 weeks		2015-07-08 18:12:24 +00:00
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central
conf	Fix up tabs vs. spaces	2015-07-04 20:31:06 +00:00
ebus
fhc
include	Add the atomic_thread_fence() family of functions with intent to	2015-07-08 18:12:24 +00:00
isa
pci	Update this driver to not save copies of registers that are no longer used	2015-04-24 13:12:04 +00:00
sbus
sparc64	Generalised support for copy-on-write structures shared by threads.	2015-06-10 10:43:59 +00:00