linux-kernel - [PATCH] expand micro-optimizations in kernel to newer model CPUs

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Date:	Sun, 8 Dec 2013 07:53:20 -0800 (PST)
From:	John <da_audiophile@...oo.com>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	"david.heidelberger@...t.cz" <david.heidelberger@...t.cz>
Subject: [PATCH] expand micro-optimizations in kernel to newer model CPUs

I have been maintaining the attached patch since kernel v3.9.[1]  I submit for review the most recent incarnation which works with the v3.12 tree.  As you can see by the ANOVA plots referenced in the comments, these micro optimizations are value-added statistically based on a compilation endpoint and are on-par with the included "core2" option in the mainline kernel itself.

I maintain an unofficial Arch Linux kernel repo and have been building/packaging kernels using this patch for many different CPUs and Arches.  I feel this code has been tested by the >2,500 users of my repo on many different CPUs and under both x86 and x86_64 systems[2] and feel it is worth for inclusion into the mainline kernel.

Please cc me on replies as I am NOT a regular subscriber to lkml.  Thank you.

1. https://github.com/graysky2/kernel_gcc_patch
2, http://repo-ck.com/stats.pdf
View attachment "kernel-312-gcc48-1.patch" of type "text/x-patch" (14066 bytes)