linux/arch/arm64/include
Will Deacon c342f78217 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 <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-07-27 15:28:51 +01:00
..
asm arm64: cmpxchg: patch in lse instructions when supported by the CPU 2015-07-27 15:28:51 +01:00
uapi/asm arm64: elf: advertise 8.1 atomic instructions as new hwcap 2015-07-27 14:34:39 +01:00