Re: [RFC] [PATCH] Pre-emption control for userspace

[Kevin Easton]

On Tue, Mar 04, 2014 at 04:51:15PM -0800, Andi Kleen wrote:
> Anything else?

If it was possible to make the time remaining in the current timeslice
available to userspace through the vdso, the thread could do something like:

if (sys_timeleft() < CRITICAL_SECTION_SIZE)
    yield();
lock();

to avoid running out of timeslice in the middle of the critical section.

    - Kevin
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