Question on Scheduler activations

[Imanpreet Arora]

Hello,

	I came across 

		http://people.redhat.com/drepper/glibcthreads.html

	It seems to arouse a bit of confusion. _FIRST_ it says that scheduler
activations are BAD. Then it delves on the possible implementation of
Scheduler activations in Linux. Though I know that scheduler
activations are not part of the present kernel. Could anyone provide
BOTH the short and long answer to

a)	If they were ever implemented?
b)	Reasons for rejection?


TIA
	
-- 

Imanpreet Singh Arora
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