Fixes: d0b27fa77854 ("sched: rt-group: synchonised bandwidth period")
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Thanks for your review~~
在 2021/12/4 19:34, Peter Zijlstra 写道:
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@xxxxxxxxxx>
Signed-off-by: Li Hua <hucool.lihua@xxxxxxxxxx>
Thanks, do you think you can reply here with a Fixes: tag so I can add
it?
.
