Re: Where to initialize certain locks...

On 03-Apr-2002 Terry Lambert wrote:
> John Baldwin wrote:
>> We need mutexes prior to mi_startup().
> 
> There are really two problems with this theory:
> 
> 1)    You can't use them before the mutex system is initialized,
>       which happens from mi_startup.

Incorrect.  It happens prior to mi_startup().

> 2)    There are no contended resources until after mi_startup
>       starts the other CPU(s).

But there is lots of code that we don't want to have to do stuff like:

        if (!cold)
                mtx_lock(&foo_mtx);
        else
                /* just wing it */

Easier to just always acquire the locks and init them early enough.

-- 

John Baldwin <[e-mail]>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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