linux-kernel - Re: [GIT PULL] Introduce housekeeping subsystem v4

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Message-ID: <20171023120631.dkpymlvfavh4zmpn@gmail.com>
Date:   Mon, 23 Oct 2017 14:06:31 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Frederic Weisbecker <frederic@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Chris Metcalf <cmetcalf@...lanox.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Luiz Capitulino <lcapitulino@...hat.com>,
        Christoph Lameter <cl@...ux.com>,
        "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
        Mike Galbraith <efault@....de>, Rik van Riel <riel@...hat.com>,
        Wanpeng Li <kernellwp@...il.com>
Subject: Re: [GIT PULL] Introduce housekeeping subsystem v4

* Frederic Weisbecker <frederic@...nel.org> wrote:

> In fact, CPU affinity is the only high level concept I found to gather all these 
> housekeeping elements.
> 
> Perhaps I should use "cpu_isolation" instead of "housekeeping" naming.

The problem with names based on that, like cpu_isolation_map, is that there's 
really two concepts here: there's the isolcpus feature where the 'mask' is in fact 
the CPUs that are isolated - while the 'housekeeping CPUs' is the mask of CPUs 
that _support_ the isolated set of CPUs. The two are different roles but easily 
confused if named similarly.

So I guess 'housekeeping CPUs' is as good as it gets for now.

Mind sending a refreshed queue against the latest kernel? There's some new 
conflicts in kernel/watchdog.c for example.

Thanks,

	Ingo