From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Date: Fri, 21 Dec 2012 06:55:44 +0000 (+0530)
Subject: Ensure that kernel_init_freeable() is not inlined into non __init code
X-Git-Tag: v3.8-rc5~35^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f80b0c904da93b9ad7db2fd9823dd701932df779;p=pandora-kernel.git

Ensure that kernel_init_freeable() is not inlined into non __init code

Commit d6b2123802d "make sure that we always have a return path from
kernel_execve()" reshuffled kernel_init()/init_post() to ensure that
kernel_execve() has a caller to return to.

It removed __init annotation for kernel_init() and introduced/calls a
new routine kernel_init_freeable(). Latter however is inlined by any
reasonable compiler (ARC gcc 4.4 in this case), causing slight code
bloat.

This patch forces kernel_init_freeable() as noinline reducing the .text

bloat-o-meter vmlinux vmlinux_new
add/remove: 1/0 grow/shrink: 0/1 up/down: 374/-334 (40)
function                        old     new   delta
kernel_init_freeable              -     374    +374 (.init.text)
kernel_init                     628     294    -334 (.text)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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