Re: [PATCH] sched: fix virtual-start-time update in QFQ

2012-09-19 Thread David Miller
From: Paolo Valente Date: Sat, 15 Sep 2012 12:41:35 +0200 > If the old timestamps of a class, say cl, are stale when the class > becomes active, then QFQ may assign to cl a much higher start time > than the maximum value allowed. This may happen when QFQ assigns to > the start time of cl the fini

[PATCH] sched: fix virtual-start-time update in QFQ

2012-09-15 Thread Paolo Valente
If the old timestamps of a class, say cl, are stale when the class becomes active, then QFQ may assign to cl a much higher start time than the maximum value allowed. This may happen when QFQ assigns to the start time of cl the finish time of a group whose classes are characterized by a higher value