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1122557
2016 Nov 15
2
[GIT PULL v2 1/5] processor.h: introduce cpu_relax_yield
On Tue, Oct 25, 2016 at 11:03:11AM +0200, Christian Borntraeger wrote:
> For spinning loops people do often use barrier() or cpu_relax().
> For most architectures cpu_relax and barrier are the same, but on
> some architectures cpu_relax can add some latency.
> For example on power,sparc64 and arc, cpu_relax can shift the CPU
> towards other hardware threads in an SMT environment.