Re: [PATCH] lockdep: Make lockstats counting per cpu
From
Peter Zijlstra <>
Date
Fri, 26 Mar 2010 07:52:38 +0100
On Fri, 2010-03-26 at 03:22 +0100, Frederic Weisbecker wrote: > We can't use irqsafe per cpu counters for that as > these stats might be also written from NMI path, and irqsafe per > cpu counters are not NMI safe, but local_t operations are. > lockdep shouldn't do NMI, nmi_enter() has an explicit lockdep_off().