On Thu, 2018-10-11 at 15:47 +0200, Dario Faggioli wrote: > For doing load balancing between runqueues, we check the load of each > runqueue, select the one more "distant" than our own load, and then > take > the proper runq lock and attempt vcpu migrations. > > If we fail to take such lock, we try again, and the idea was to give > up > and bail if, during the checking phase, we can't take the lock of any > runqueue (check the comment near to the 'goto retry;', in the middle > of > balance_load()) > > However, the variable that controls the "give up and bail" part, is > not > reset upon retries. Therefore, provided we did manage to check the > load of > at least one runqueue during the first pass, if we can't get any runq > lock, > we don't bail, but we try again taking the lock of that same runqueue > (and that may even more than once). > > Signed-off-by: Dario Faggioli <dfaggi...@suse.com> > --- > Cc: George Dunlap <george.dun...@citrix.com> > Ping?
Thanks and Regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Software Engineer @ SUSE https://www.suse.com/
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