Git Repo - linux.git/commit

]> Git Repo - linux.git/commit

author	Will Deacon <[email protected]>
	Thu, 23 Apr 2015 19:08:49 +0000 (20:08 +0100)
committer	Will Deacon <[email protected]>
	Mon, 27 Jul 2015 14:28:51 +0000 (15:28 +0100)
commit	c342f78217e822d2178265b0b1de232eeb717149
tree	2c1de7284bb6671aa9cb4e8a0f85a119d64de3a2	tree \| snapshot
parent	c8366ba0fb65063b6b4f69c7af1ea74152435590	commit \| diff

arm64: cmpxchg: patch in lse instructions when supported by the CPU

On CPUs which support the LSE atomic instructions introduced in ARMv8.1,
it makes sense to use them in preference to ll/sc sequences.

This patch introduces runtime patching of our cmpxchg primitives so that
the LSE cas instruction is used instead.

Reviewed-by: Catalin Marinas <[email protected]>
Signed-off-by: Will Deacon <[email protected]>

Empty description

RSS Atom

This page took 0.055575 seconds and 4 git commands to generate.

arch/arm64/include/asm/atomic.h		diff \| blob \| blame \| history
arch/arm64/include/asm/atomic_ll_sc.h		diff \| blob \| blame \| history
arch/arm64/include/asm/atomic_lse.h		diff \| blob \| blame \| history
arch/arm64/include/asm/cmpxchg.h		diff \| blob \| blame \| history