[PATCH linux-tip] x86: Change OPTIMIZE_INLINING help to say enabling makes smaller kernels - Kernel

This is a discussion on [PATCH linux-tip] x86: Change OPTIMIZE_INLINING help to say enabling makes smaller kernels - Kernel ; The OPTIMIZE_INLINING help currently says "The gcc 4.x series have a rewritten inlining algorithm and disabling this option will generate a smaller kernel there." This contradicts other parts of the help text and my own tests: 5463127 2008-10-11 19:51 vmlinux.no-opt ...

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Thread: [PATCH linux-tip] x86: Change OPTIMIZE_INLINING help to say enabling makes smaller kernels

  1. [PATCH linux-tip] x86: Change OPTIMIZE_INLINING help to say enabling makes smaller kernels

    The OPTIMIZE_INLINING help currently says "The gcc 4.x series have a
    rewritten inlining algorithm and disabling this option will generate a
    smaller kernel there."

    This contradicts other parts of the help text and my own tests:
    5463127 2008-10-11 19:51 vmlinux.no-opt
    5456152 2008-10-11 19:56 vmlinux.opt

    Reword text to say that enabling OPTIMIZE_INLINING will lead to smaller
    kernels with gcc 4.x or later.

    Signed-off-by: Sitsofe Wheeler
    ---

    diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
    index 6a75bc2..bdddfbc 100644
    --- a/arch/x86/Kconfig.debug
    +++ b/arch/x86/Kconfig.debug
    @@ -395,10 +395,10 @@ config OPTIMIZE_INLINING
    developers have marked 'inline'. Doing so takes away freedom from gcc to
    do what it thinks is best, which is desirable for the gcc 3.x series of
    compilers. The gcc 4.x series have a rewritten inlining algorithm and
    - disabling this option will generate a smaller kernel there. Hopefully
    - this algorithm is so good that allowing gcc4 to make the decision can
    - become the default in the future, until then this option is there to
    - test gcc for this.
    + enabling this option will generate a smaller kernel there. Hopefully
    + this algorithm is so good that allowing gcc 4.x and above to make the
    + decision will become the default in the future. Until then this option
    + is there to test gcc for this.

    If unsure, say N.

    --
    Sitsofe | http://sucs.org/~sits/
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  2. Re: [PATCH linux-tip] x86: Change OPTIMIZE_INLINING help to say enabling makes smaller kernels


    * Sitsofe Wheeler wrote:

    > The OPTIMIZE_INLINING help currently says "The gcc 4.x series have a
    > rewritten inlining algorithm and disabling this option will generate a
    > smaller kernel there."
    >
    > This contradicts other parts of the help text and my own tests:
    > 5463127 2008-10-11 19:51 vmlinux.no-opt
    > 5456152 2008-10-11 19:56 vmlinux.opt
    >
    > Reword text to say that enabling OPTIMIZE_INLINING will lead to smaller
    > kernels with gcc 4.x or later.
    >
    > Signed-off-by: Sitsofe Wheeler


    applied, thanks Sitsofe!

    Ingo
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