[PATCH v2] powerpc: always enable queued spinlocks for 64s, disable for others

[Michael Ellerman]

On Mon, 18 Jan 2021 22:34:51 +1000, Nicholas Piggin wrote:
> Queued spinlocks have shown to have good performance and fairness
> properties even on smaller (2 socket) POWER systems. This selects
> them automatically for 64s. For other platforms they are de-selected,
> the standard spinlock is far simpler and smaller code, and single
> chips with a handful of cores is unlikely to show any improvement.
> 
> CONFIG_EXPERT still allows this to be changed, e.g., to help debug
> performance or correctness issues.

Applied to powerpc/next.

[1/1] powerpc: Always enable queued spinlocks for 64s, disable for others
      https://git.kernel.org/powerpc/c/c9f3401313a5089f100d7d1ef4b75cd7b49b2190

cheers