Subject: Re: Final reaper removal patch
To: YAMAMOTO Takashi <email@example.com>
From: Jaromir Dolecek <jdolecek@NetBSD.org>
Date: 01/09/2004 10:33:51
YAMAMOTO Takashi wrote:
> lwp_exit2() should acquire kernel lock. otherwise it deadlocks.
I'm not sure. AFAICS it uses correct lock protocol.
Normal lock order is:
2. other spinlocks
The lwp_exit2() doesn't take KERNEL_PROC_LOCK(), only takes
the other spinlocks. Thus, it shouldn't deadlock.
Deadlock would be possible only if there would be any code
path where lwp_exit2() acquires some others locks before
taking KERNEL_PROC_LOCK. Right?
Jaromir Dolecek <jdolecek@NetBSD.org> http://www.NetBSD.cz/
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