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    SubjectRe: [PATCH 0/7] CPU controller - V1
    On Mon, Aug 21, 2006 at 10:42:40AM +0000, Mike Galbraith wrote:
    > WRT interactivity: Looking at try_to_wake_up(), it appears that wake-up
    > of a high priority group-a task will not result in preemption of a lower
    > priority current group-b task. True?

    I dont think it is true. The definition of TASK_PREEMPTS_CURR() is
    unchanged with these patches. Also group priority is linked to the
    highest priority task it has. As a result, the high-priority group-a
    task should preempt the low priority group-b task.

    This is unless group-a has currently run out of its bandwidth and is sitting in
    the expired queue (which is something that the TASK_PREEMPTS_CURR()
    can be optimized to check for).

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      Last update: 2006-08-21 14:51    [W:0.025 / U:10.600 seconds]
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