linux-kernel - backporting BFS to 2.6.27

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Message-ID: <4AC6638E.3020803@sbcglobal.net>
Date:	Fri, 02 Oct 2009 15:33:18 -0500
From:	Jayson King <jaysonk@...global.net>
To:	kernel@...ivas.org, LKML <linux-kernel@...r.kernel.org>
Subject: backporting BFS to 2.6.27

Hello, Con & LKML

I have started a backport of sched-bfs 300 to kernel 2.6.27.35. I
originally thought of two different ways to do it. Either pull in
mainline patches from .28 ~ .31 until bfs applies cleanly, or change bfs
enough to apply to .27 without needing many mainline patches. The latter
approach seemed to be cleaner. I started by comparing the .31 sched.c to
.27.35 sched.c and applied those backward changes to sched_bfs.c.

I did also apply 3 mainline patches to .27.35, because I couldn't decide
what to do about reverting the account_* functions which bfs changes.
These patches are 457533a7, 79741dd3, and f5f293a4.

The kernel compiles, but it panics:

Kernel alive
Kernel really alive
PANIC: early exception 0e rip 10:ffffffff810ad10b error 0 cr2 18.

There's no stack trace but that address is in __kmalloc.

Can you or others give a hint of what might be going wrong or what I can do?

I've attached the .27'ized patches mentioned above as well as the .27
sched-bfs patch. These patches apply to 2.6.27.35 in order:

linux-2.6.27-457533a7.patch
linux-2.6.27-79741dd3.patch
linux-2.6.27-f5f293a4.patch
2.6.27-sched-bfs-300.patch

Attached also is the .config file.

Thanks.

(if replying from LKML please CC replies to me)

Jayson

View attachment "linux-2.6.27-457533a7.patch" of type "text/plain" (11639 bytes)

View attachment "linux-2.6.27-79741dd3.patch" of type "text/plain" (14623 bytes)

View attachment "linux-2.6.27-f5f293a4.patch" of type "text/plain" (2009 bytes)

View attachment "2.6.27-sched-bfs-300.patch" of type "text/plain" (181995 bytes)

View attachment ".config" of type "text/plain" (84233 bytes)