Re: kern/39349 (cpu affinity can make lwps non-schedulable)

[Mindaugas Rasiukevicius <rmind%NetBSD.org@localhost>]

The following reply was made to PR kern/39349; it has been noted by GNATS.

From: Mindaugas Rasiukevicius <rmind%NetBSD.org@localhost>
To: thorpej%shagadelic.org@localhost, yamt%mwd.biglobe.ne.jp@localhost
Cc: netbsd-bugs%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
gnats-bugs%NetBSD.org@localhost
Subject: Re: kern/39349 (cpu affinity can make lwps non-schedulable)
Date: Tue, 30 Sep 2008 17:46:31 +0100

 > State-Changed-From-To: open->analyzed
 > State-Changed-By: rmind%NetBSD.org@localhost
 > State-Changed-When: Tue, 30 Sep 2008 16:32:24 +0000
 > State-Changed-Why:
 > Problem is clear, quick fix is commited.  Decision what to do with already
 > bound threads should be made to make a full fix.
 
 Jason Thorpe <thorpej%shagadelic.org@localhost> wrote:
 > ...
 > 
 > Probably need to prevent binding to CPUs that have been taking  
 > offline.  But what to do about CPUs that already have bound threads  
 > (which is all of them, of course).  Perhaps we need to make note when  
 > an LWP has taken a lock?
 > 
 > ...
 
 Perhaps disallow (return EBUSY) changing of CPU state to offline, while there
 are bound threads? What do you think?
 
 -- 
 Best regards,
 Mindaugas
 www.NetBSD.org