Re: SMP spin_lock...

Stephen C. Tweedie (sct@redhat.com)
Tue, 15 Feb 2000 15:16:45 +0000 (GMT)


Hi,

On Mon, 14 Feb 2000 12:41:53 -0800 (PST), Robert Dinse
<nanook@eskimo.com> said:

> I wish there were an option to recover from spin_lock deadlock
> conditions, when one times out, release the lock and get on with life
> or something.

The 2.3 kernel's NMI lockup watchdog already detects spinlock deadlocks
well enough, and it would be pretty simple to make that mechanism use
the existing reboot-on-panic facility.

--Stephen

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