Re: [ANNOUNCE] 3.8-rc6-nohz4

[Frederic Weisbecker]

2013/2/7 Steven Rostedt <rostedt@xxxxxxxxxxx>:
> On Thu, 2013-02-07 at 17:45 +0100, Frederic Weisbecker wrote:
>
>> >
>> > config NO_HZ_TASK
>> >         bool "Stop tick on specified CPUs when single task is running"
>> >         default n
>> >         depends on NO_HZ
>>
>> Ok I launched another debate about that single task thing. I wish we
>> don't make it a fundamental component but rather an implementation
>> detail that can be dynamically dealt with in the future.
>
> It's not just an implementation detail, as it is very visible to the
> user. If they want to take advantage of a task NO_HZ they have to go
> through a bit of loops to make sure only a single task is running on a
> CPU. We should be broadcasting this requirement to educate the users on
> exactly how they can take advantage of this feature.

If you guys really insist I can make it CONFIG_NO_HZ_SINGLETASK. I
don't mind that much. Then when we support hrtick we can rename it to
NO_HZ_FULL or whatever.
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