Cache_RangeThreshold ARMop (changes)

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» Cache_RangeThreshold ARMop

Cache_RangeThreshold ARMop

Use

Return a threshold value for an address range, above which it is advisable to globally clean and/or invalidate caches, for performance reasons. For a range less than or equal to the threshold, a ranged cache operation is recommended.

Notes

This call returns a value that the kernel may use to select between strategies in some cache operations. This threshold may also be of use to some of the ARM operations themselves (although they should typically be able to read the parameter more directly).

The exact value is unlikely to be critical, but a sensible value may depend on both the ARM and external factors such as memory bus speed.

See also

• OS_MMUControl 2