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SubjectRe: [GIT PATCH] TTY patches for 2.6.33-git
Am Montag, 14. Dezember 2009 06:30:15 schrieb Arjan van de Ven:
> > We have the bkl tracepoints for that, attaching an example below,
> > blkdev_get/bkldev_put is among the highest consumer for me.
> we have a trace, but not a number that anyone can just pull out without
> having to go through great lengths to set stuff up... (esp to capture a
> boot)...
> Adding a counter always to the lock_kernel function should be fine
> instead...

But don't we need to know how long it is held? If you just count
you'll make code that drops it while it can look bad.


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