11 Nov
2015
11 Nov
'15
12:08 a.m.
On Tue, 2015-11-10 at 14:41 -0800, Yang Shi wrote:
aarch64 doesn't have native support for XADD instruction, implement it by the below instruction sequence:
Load (dst + off) to a register Add src to it Store it back to (dst + off)
Not really what is needed ?
See this BPF_XADD as an atomic_add() equivalent.