Re: [lm-sensors] [PATCH] drivers/hwmon/coretemp: Fix incorrecthot-removed CPU's core sensor issue

[Guenter Roeck]

On Wed, Aug 18, 2010 at 06:53:45PM -0400, Fenghua Yu wrote:
> From: Fenghua Yu <fenghua.yu@xxxxxxxxx>
> 
> In current coretemp driver, when a CPU in dev_list is hot-removed, although its
> HT sibling is still running, its core sensor is gone and not available to user
> level application any more.
> 
> When a CPU is hot-removed, its core sensor should be still available to upper
> level application as long as the hot-removed CPU's HT sibling is still running.
> A core sensor is invisible to user level only when all of siblings in a core are
> hot-removed.
>
Isn't that just a short term (ie a couple of ms or even us) race condition
until the sibling is removed as well ? If so, why bother ?

Thanks,
Guenter

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