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    SubjectRe: [patch 00/2] improve .text size on gcc 4.0 and newer compilers
    On Fri, Dec 30, 2005 at 03:03:22AM +0100, Tim Schmielau took 0 lines to write:

    > http://www.physik3.uni-rostock.de/tim/kernel/2.6/deinline.patch.gz
    > The resulting kernel actually booted (am running it right now). However,
    > catching just these low-hanging fruits doesn't get me anywhere near
    > Arjan's numbers. For my non-representative personal config I get (on
    > i386 with -unit-at-a-time):
    >
    > > size vmlinux*
    > text data bss dec hex filename
    > 2197105 386568 316840 2900513 2c4221 vmlinux
    > 2144453 392100 316840 2853393 2b8a11 vmlinux.deinline

    For two more datapoints, also from an x86_64 2.6.15-rc7 kernel, here
    are the values for my main desktop .config and an allyesconfig .config.
    The .deinline kernels have the above patch applied and are also built
    with CONFIG_CC_OPTIMIZE_FOR_SIZE=y.

    $ size vmlinux.krw*
    text data bss dec hex filename
    2338371 462208 479920 3280499 320e73 vmlinux.krw
    2309384 468168 479920 3257472 31b480 vmlinux.krw.deinline

    .text is only 1.24% smaller

    For an allyesconfig, the results are slightly worse:

    $ size vmlinux*
    text data bss dec hex filename
    24076648 7465782 1996904 33539334 1ffc506 vmlinux
    23791161 7513590 1996904 33301655 1fc2497 vmlinux.deinline

    .text is only 1.19% smaller

    Kurt
    --
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