svn commit: r240475 - in head/sys: dev/hwpmc kern

[Konstantin Belousov]

On Thu, Sep 13, 2012 at 10:26:22PM +0000, Attilio Rao wrote:
> Author: attilio
> Date: Thu Sep 13 22:26:22 2012
> New Revision: 240475
> URL: http://svn.freebsd.org/changeset/base/240475
> 
> Log:
>   Remove all the checks on curthread != NULL with the exception of some MD
>   trap checks (eg. printtrap()).
>   
>   Generally this check is not needed anymore, as there is not a legitimate
>   case where curthread != NULL, after pcpu 0 area has been properly
>   initialized.
I do not disagree with the patch, but I do with this statement.
During the AP startup, there is indeed a window while curthread is NULL.
Unfortunately, trying to panic there is worse then not panic.

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