On Wed, Mar 15, 2017 at 10:46:56AM +0800, Greg KH wrote: > On Tue, Mar 14, 2017 at 07:14:28PM -0700, Andi Kleen wrote: > > From: Andi Kleen <a...@linux.intel.com> > > > > The kref functions check for NULL release functions. > > This WARN_ON seems rather pointless. We will eventually release and > > then just crash nicely. It is also somewhat expensive because > > these functions are inlined in a lot of places. > > Removing the WARN_ONs saves around 2.3k in this kernel > > (likely more in others with more drivers) > > > > text data bss dec hex filename > > 9083992 5367600 11116544 25568136 1862388 > > vmlinux-before-load-avg > > 9070166 5367600 11116544 25554310 185ed86 vmlinux-load-avg > > WARN_ON() is heavy, didn't realize that.
I actually have patches fixing that.
