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| /openbmc/linux/arch/arm64/include/asm/ |
| H A D | spinlock.h | 81bb5c64 Mon Feb 09 21:03:15 CST 2015 Will Deacon <will.deacon@arm.com> arm64: locks: 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 locking functions so that
LSE atomic instructions are used for spinlocks and rwlocks.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
81bb5c64 Mon Feb 09 21:03:15 CST 2015 Will Deacon <will.deacon@arm.com> arm64: locks: 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 locking functions so that
LSE atomic instructions are used for spinlocks and rwlocks.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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