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CFS Cleanups

Aug 11, 2007, 22:00 (0 Talkback[s])

"Ingo Molnar pushed a series of patches to his Completely Fair Scheduler code upstream that were merged into the mainline kernel. He explained the reason for so many small patches, 'the main reason is the safe and gradual elimination of a widely used 64-bit function argument: the 64-bit 'now' timestamp.' In addition to the many small patches removing the 64-bit 'now' timestamp, he noted:

"'These changes are necessary for 3 reasons: firstly they address the 'there's too much 64-bit stuff in the scheduler' observation. Secondly, it's not directly visible but these changes also act as a correctness fix for an obscure (and minor) but not-too-pretty-to-fix accounting bug: idle_balance() had its own internal notion of 'now', separate from that of schedule(). Thirdly, this debloats sched.o quite significantly...'"

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