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Date: Sat, 28 Mar 2015 17:02:15 +0100
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Subject: Re: [PATCH 2/2] show nohz_full cpus in sysfs
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Rik van Riel <riel@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Li Zefan <lizefan@huawei.com>,
        Tejun Heo <tj@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2015-03-27 22:50 GMT+01:00  <riel@redhat.com>:
> From: Rik van Riel <riel@redhat.com>
>
> Currently there is no way to query which CPUs are in nohz_full
> mode from userspace.

Well you can watch dmesg | grep NO_HZ
But surely sysfs is more convenient from an app.

I guess it's ok, as long as it's strictly Read Only. Here it seems to
be the case. And it's not chmod'able, right?