mm/damon/schemes: implement size quota for schemes application speed control

There could be arbitrarily large memory regions fulfilling the target
data access pattern of a DAMON-based operation scheme.  In the case,
applying the action of the scheme could incur too high overhead.  To
provide an intuitive way for avoiding it, this implements a feature
called size quota.  If the quota is set, DAMON tries to apply the action
only up to the given amount of memory regions within a given time
window.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Cc: Amit Shah <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Greg Thelen <[email protected]>
Cc: Jonathan Cameron <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Leonard Foerster <[email protected]>
Cc: Marco Elver <[email protected]>
Cc: Markus Boehme <[email protected]>
Cc: Shakeel Butt <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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