[PATCH] ARM: add clean and flush_dcache_all to ARM cache API

Linus Walleij linus.walleij at stericsson.com
Fri Nov 5 11:22:43 EDT 2010

Russell King - ARM Linux wrote:
> On Fri, Nov 05, 2010 at 04:01:47PM +0100, Linus Walleij wrote:
>> This patch adds functions to flush and clean the entire data cache.
>> Since the existing flush/clean range functions take more time to
>> flush/clean the entire data cache, they cannot be used in
>> performance-critical situations:
> This is something that should be decided (as we already do for some
> processors) inside those methods.  There's no need for new methods.

Aha so we should check the size of the buffer in the normal
cache clean_range/flush_range operations and if it exceeds a
certain watermark that we know for this specific arch we
clean/flush all cache instead?

Sounds like it could be done if I get it right.

Linus Walleij

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