git.openwrt.org Git - openwrt/staging/blogic.git/commit

author	Vineet Gupta <[email protected]>
	Mon, 27 Jul 2015 11:53:28 +0000 (17:23 +0530)
committer	Vineet Gupta <[email protected]>
	Fri, 30 Sep 2016 21:48:17 +0000 (14:48 -0700)
commit	ce6365270ecd1216b48fb1440978e454ae0144de
tree	2e46017d408be15aa5834675cd11c06122fc353c	tree \| snapshot
parent	26c01c49d559268527d78f45a6818fae0c204a45	commit \| diff

ARCv2: Implement atomic64 based on LLOCKD/SCONDD instructions

ARCv2 ISA provides 64-bit exclusive load/stores so use them to implement
the 64-bit atomics and elide the spinlock based generic 64-bit atomics

boot tested with atomic64 self-test (and GOD bless the person who wrote
them, I realized my inline assmebly is sloppy as hell)

Cc: Peter Zijlstra <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Vineet Gupta <[email protected]>

arch/arc/Kconfig		diff \| blob \| history
arch/arc/include/asm/atomic.h		diff \| blob \| history