[PATCH v2] srcu: Isolate srcu sections using CONFIG_SRCU

[Peter Zijlstra]

On Tue, Dec 30, 2014 at 01:54:07PM -0500, Pranith Kumar wrote:
> On Tue, Dec 30, 2014 at 1:50 PM, Peter Zijlstra <peterz at infradead.org> wrote:
> > On Tue, Dec 30, 2014 at 12:46:22AM -0500, Pranith Kumar wrote:
> >> Isolate the SRCU functions and data structures within CONFIG_SRCU so that there
> >> is a compile time failure if srcu is used when not enabled. This was decided to
> >> be better than waiting until link time for a failure to occur.
> >
> > Why?
> 
> This is part of the kernel tinification efforts. The first patch was
> posted here: https://lkml.org/lkml/2014/12/4/848. This patch enables a
> compile time failure instead of a link time failure.

can't be arsed to click. again, why does it matter when it fails,
neither stages produces a working kernel so tinification cannot be the
purpose.