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SubjectRe: [RFC PATCH 0/9] Introduce housekeeping subsystem
On 7/21/2017 9:21 AM, Frederic Weisbecker wrote:
> I'm leaving for two weeks so this is food for thoughts in the meantime :)
> We have a design issue with nohz_full: it drives the isolation features
> through the *housekeeping*() functions: kthreads, unpinned timers,
> watchdog, ...
> But things should work the other way around because the tick is just an
> isolation feature among others.
> So we need a housekeeping subsystem to drive all these isolation
> features, including nohz full in a later iteration. For now this is a
> basic draft. In the long run this subsystem should also drive the tick
> offloading (remove residual 1Hz) and all unbound kthreads.
> git://
> nohz/0hz
> HEAD: 68e3af1de5db228bf6c2a5e721bce59a02cfc4e1

For the series:

Reviewed-by: Chris Metcalf <>

I spotted a few typos that you should grep for and fix for your next
"watchog", "Lets/lets" instead of "Let's/let's", "overriden" (should
have two d's).

The new housekeeping=MASK boot option seems like it might make it a little
irritating to specify nohz_full=MASK as well. I guess if setting
implied "all but housekeeping", it becomes a reasonably tidy solution.
To make
this work right you might have to make the housekeeping option early_param
instead so its value is available early enough.

Chris Metcalf, Mellanox Technologies

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