Re: [PATCH v2] srcu: Isolate srcu sections using CONFIG_SRCU
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2015-01-04 09:36:03
Also in:
linux-s390, lkml
On Tue, 2014-12-30 at 13:54 -0500, Pranith Kumar wrote:
On Tue, Dec 30, 2014 at 1:50 PM, Peter Zijlstra [off-list ref] wrote:quoted
On Tue, Dec 30, 2014 at 12:46:22AM -0500, Pranith Kumar wrote:quoted
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.
The punch line was: "so the savings are about ~2000 bytes." Which is utterly not worth the effort IMO. There have got to be more attractive targets for tinification than this. cheers