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SubjectRe: [PATCH] blktrace: Fix potentail deadlock between delete & sysfs ops
On 08/16/2017 03:14 PM, Steven Rostedt wrote:
> On Wed, 16 Aug 2017 15:07:25 -0400
> Waiman Long <> wrote:
>> I am thinking about maybe letting a RT task to sleep a tiny amount of
>> time instead of calling schedule(). Hopefully, that will allow a
>> lower-priority task to make forward progress.
> That is actually one of the ugly hacks we have in the PREEMPT_RT patch
> (and one of the things we need to fix before getting it to mainline).
> A simple msleep(1).
> -- Steve

I am planning to use usleep_range(). That will allow a short sleep in
the us range instead of ms. The documentation suggest that for a
10us-20ms sleep.


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