Re: [PATCH][RFC] Spinlock-timeout

[Benjamin Herrenschmidt]

On Sat, 2004-06-05 at 15:31, Jake Moilanen wrote:
> Here's a patch that will BUG() when a spinlock is held for longer then X
> seconds.  It is useful for catching deadlocks since not all archs have a
> NMI watchdog.  
> 
> It is also helpful to find locks that are held too long.
> 
> Please send comments.

It would be better to use the timebase on CPUs that have one, no ? Or
you'll miss cases where either irqs are disabled or you are on a code
path issued by the timer interrupt, and thus jiffies isn't updated


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