Re: [PATCH 4/5] locking/lockdep: Make class->ops a percpu counter

[Peter Zijlstra]

On Tue, Oct 02, 2018 at 10:10:48AM -0400, Waiman Long wrote:
> One alternative is to group it under CONFIG_DEBUG_LOCKDEP again. This
> metric was originally under CONFIG_DEBUG_LOCKDEP, but was moved to
> CONFIG_LOCKDEP when trying to make other lock debugging statistics
> per-cpu counters. It was probably because this metric is per lock class
> while the rests are global.
> 
> By doing so, you incur the memory cost only when CONFIG_DEBUG_LOCKDEP is
> defined.
> 
> What do you think?

Works for me.