Re: [RFC][PATCH] fs: optimize inotify/fsnotify code for unwatched files

[Paul E. McKenney]

On Mon, Jun 22, 2015 at 09:03:08PM +0200, Peter Zijlstra wrote:
> On Mon, Jun 22, 2015 at 09:29:49AM -0700, Paul E. McKenney wrote:
> 
> > I believe that there still are some cases.  But why would offline
> > CPUs seem so iffy?  CPUs coming up execute code before they are fully
> > operational, and during that time, much of the kernel views them as
> > being offline.  Yet they do have to execute significant code in order
> > to get themselves set up.
> 
> I'm thinking we do far too much during bringup and tear-down as it is.
> But yes maybe.

Boot, suspend, and hibernation indeed would be faster if we did less,
but we still will have to do something.

							Thanx, Paul

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