[PATCH 00/18] mfd: convert to use maple tree register cache

[Mark Brown]

On Tue, Feb 06, 2024 at 10:33:22AM +0100, Geert Uytterhoeven wrote:

> If all of this is true, is there any reason to keep REGCACHE_RBTREE
> around?  If not, perhaps REGCACHE_RBTREE should be treated as
> REGCACHE_MAPLE in the regmap core code first, followed by a single
> tree-wide patch to replace REGCACHE_RBTREE?

There is a very small niche for devices where cache syncs are a
particularly important part of the workload where rbtree's choices might
give better performance, especially on systems with low end CPUs.
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