Messages in this thread | | | Date | Sun, 12 Jan 2014 21:00:49 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 0/1] lockdep: Kill held_lock->check and "int check" arg of __lock_acquire() |
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On Sun, Jan 12, 2014 at 06:45:32PM +0100, Oleg Nesterov wrote: > But could someone please explain me what should lockdep_no_validate > actually do? 1704f47b5 "lockdep: Add novalidate class for dev->mutex > conversion" doesn't tell which kind of warnings it tries to avoid, > and it looks buggy (see another email from me).
It should disable lock-order checks for the locks that set that as class. So we can still do the simple checks like detect if we free memory with a held lock in and make sure we do not return to userspace with a held lock; but the class should not participate in the lock graph.
I'll have a look at your earlier email again; I did note the question but it slipped my mind :/
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