[Syllable-kernel] Re: [Syllable-developer] SMP: nested spinlocks?

[Brent P. N. <me...@ot...>]

(Replied from syllable-developer)

Quoting Jake Hamby <jh...@an...>:
[snip]
> So, in terms of the correct fix.  First, we should probably add 
> "-DCONFIG_SMP" to the default Makefile and wrap our SMP-specific stuff 
> with that, like Linux does.  That way, a UP-optimized kernel could be 
> built if the user desires to.  The main challenge is to figure out 
> exactly what our locking requirements are, and ideally, hold 
> sched_lock() for as short of a time as possible.  This would improve 
> scheduling latency on both UP and SMP cases.
[snip]

Do we need to do this now?

I ask this honestly.  What, precisely, are the benefits, other than increased
speed?

-- 
Brent P. Newhall
http://brent.other-space.com/

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