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2 Commits

Author SHA1 Message Date
Guo Ren
c38425df20 csky: Fixup asm/cmpxchg.h with correct ordering barrier 
Optimize the performance of cmpxchg by using more fine-grained
acquire/release barriers.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Paul E. McKenney <paulmck@kernel.org>
 2021-01-12 09:52:40 +08:00
Guo Ren
a0ae62806f csky: Atomic operations 
This patch adds atomic, cmpxchg, spinlock files.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Andrea Parri <andrea.parri@amarulasolutions.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Peter Zijlstra <peterz@infradead.org>
 2018-10-26 00:54:23 +08:00