Guo Ren 6b160e0513 csky: atomic: Add custom atomic.h implementation ... The generic atomic.h used cmpxchg to implement the atomic operations, it will cause daul loop to reduce the forward guarantee. The patch implement csky custom atomic operations with ldex/stex instructions for the best performance. Important comment by Rutland: 8e86f0b409 ("arm64: atomics: fix use of acquire + release for full barrier semantics") Link: https://lore.kernel.org/linux-riscv/CAJF2gTSAxpAi=LbAdu7jntZRUa=-dJwL0VfmDfBV5MHB=rcZ-w@mail.gmail.com/T/#m27a0f1342995deae49ce1d0e1f2683f8a181d6c3 Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com>		2022-04-25 13:51:42 +08:00
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abiv1	csky: Add C based string functions	2022-04-18 21:23:55 +08:00
abiv2	csky: Add C based string functions	2022-04-18 21:23:55 +08:00
boot	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
configs	csky: Minimize defconfig to support buildroot config.fragment	2020-02-21 15:43:25 +08:00
include	csky: atomic: Add custom atomic.h implementation	2022-04-25 13:51:42 +08:00
kernel	csky: optimize memcpy_{from,to}io() and memset_io()	2022-04-18 21:23:55 +08:00
lib	csky: Add C based string functions	2022-04-18 21:23:55 +08:00
mm	csky: Fix versioncheck warnings	2022-04-08 15:05:23 +08:00
Kbuild	kbuild: use more subdir- for visiting subdirectories while cleaning	2021-10-24 13:49:46 +09:00
Kconfig	csky: Add C based string functions	2022-04-18 21:23:55 +08:00
Kconfig.debug	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Kconfig.platforms	csky/Kconfig: Add Kconfig.platforms to support some drivers	2020-02-21 15:43:24 +08:00
Makefile	kbuild: use more subdir- for visiting subdirectories while cleaning	2021-10-24 13:49:46 +09:00