Mailing List Archive

Hi everyone,

Here it is v2 of the lock reworking around and within sched-adjust.

With respect to the first posting [1]:
- I _did_not_ move the per-pluggable scheduler lock toward schedule.c,
as agreed with George during review;
- I fixed the bug in sedf spotted by Juergen the way he suggested;
- I've finally been able to test it under all the three schedulers,
and it is doing its job, at least here;

Notice the series "collapsed" in one signle patch, as it was being hard
to find a breakdown of it that does not introduce regressions and/or
transient deadlock situations worse than the ones it's trying to cure...
I hope it's still readable and comfortable to review. :-)

Thanks to everyone who provided his feedback on the first version of
this.

Regards,
Dario

[1] http://xen.1045712.n5.nabble.com/RFC-RFT-PATCH-0-of-3-rework-locking-in-sched-adjust-td5016899.html

--
xen/common/sched_credit.c | 10 ++++++--
xen/common/sched_credit2.c | 21 ++++++++++---------
xen/common/sched_sedf.c | 156 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------------------
xen/common/schedule.c | 34 +-------------------------------
4 files changed, 140 insertions(+), 81 deletions(-)

--
<<This happens because I choose it to happen!>> (Raistlin Majere)
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Dario Faggioli, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
PhD Candidate, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa (Italy)