Messages in this thread | | | Date | Fri, 03 Dec 2010 12:09:01 -0500 | From | Rik van Riel <> | Subject | Re: [RFC PATCH 2/3] sched: add yield_to function |
| |
On 12/03/2010 11:20 AM, Srivatsa Vaddagiri wrote: > On Fri, Dec 03, 2010 at 10:35:25AM -0500, Rik van Riel wrote: >> Do you have suggestions on what I should do to make >> this yield_to functionality work? > > Keeping in mind the complications of yield_to, I had suggested we do something > suggested below: > > http://marc.info/?l=kvm&m=129122645006996&w=2 > > Essentially yield to other tasks on your own runqueue and when you get to run > again, try reclaiming what you gave up earlier (with a cap on how much one can > feedback this relinquished time). It can be accomplished via a special form of > yield(), available only to in-kernel users, kvm in this case.
I don't see how that is going to help get the lock released, when the VCPU holding the lock is on another CPU.
-- All rights reversed
| |