Messages in this thread | | | Date | Sat, 4 Dec 2021 12:34:15 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2, RESEND] sched/rt: Try to restart rt period timer when rt runtime exceeded |
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On Fri, Dec 03, 2021 at 03:36:18AM +0000, Li Hua wrote: > When rt_runtime is modified from -1 to a valid control value, it may > cause the task to be throttled all the time. Operations like the following > will trigger the bug. E.g: > 1. echo -1 > /proc/sys/kernel/sched_rt_runtime_us > 2. Run a FIFO task named A that executes while(1) > 3. echo 950000 > /proc/sys/kernel/sched_rt_runtime_us > > When rt_runtime is -1, The rt period timer will not be activated when task > A enqueued. And then the task will be throttled after setting rt_runtime to > 950,000. The task will always be throttled because the rt period timer is > not activated. > > Reported-by: Hulk Robot <hulkci@huawei.com> > Signed-off-by: Li Hua <hucool.lihua@huawei.com>
Thanks, do you think you can reply here with a Fixes: tag so I can add it?
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