Plumbers: Tweaking scheduler policy micro-conf RFP
vincent.guittot at linaro.org
Tue May 15 18:13:45 UTC 2012
On 15 May 2012 18:30, Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com> wrote:
> * Vincent Guittot <vincent.guittot at linaro.org> [2012-05-15 17:05:47]:
>> On 15 May 2012 15:00, Peter Zijlstra <peterz at infradead.org> wrote:
>> > On Tue, 2012-05-15 at 14:57 +0200, Vincent Guittot wrote:
>> >> Not sure that nobody cares but it's much more that scheduler,
>> >> load_balance and sched_mc are sensible enough that it's difficult to
>> >> ensure that a modification will not break everything for someone
>> >> else.
>> > Thing is, its already broken, there's nothing else to break :-)
>> sched_mc is the only power-aware knob in the current scheduler. It's
>> far from being perfect but it seems to work on some ARM platform at
>> least. You mentioned at the scheduler mini-summit that we need a
>> cleaner replacement and everybody has agreed on that point. Is anybody
>> working on it yet ? and can we discuss at Plumber's what this
>> replacement would look like ?
> Hi Vincent,
> In the earlier discussion we listed down the cleanup requirements.
> I made a cleanup patch that unifies the sysfs interface as a first
> [RFC PATCH v1 0/2] sched: unified sched_powersavings tunables
> I need to make this scheme generically work on different topology,
> which is the real problem that we need to solve.
Your cleanup patch should not impact current ARM platform. IIUC, you
have merged sched_mc and sched_smt interface and there is no ARM
platform with SMT yet
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
More information about the linaro-sched-sig