Re: [PATCH] 2.6.3 Posix scheduling violation for !SCHED_OTHER

From: Ingo Molnar
Date: Tue Mar 23 2004 - 19:02:11 EST



* Joe Korty <joe.korty@xxxxxxxx> wrote:

> Andrew,
> The following fixes a problem where a SCHED_FIFO task would on
> occasion be moved to the end of its runqueue when returned to from a
> preemption. Cause was do to some SCHED_OTHER code in schedule() which
> was being run for tasks of every policy.

yes, indeed this is a bug.

> - if (next->activated > 0) {
> + if (!rt_task(next) && next->activated > 0) {

the patch looks good. Andrew, please apply.

Ingo
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