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    Subject[PATCH][RFC] 4K stacks default, not a debug thing any more...?

    I'm wondering if it's time to make 4K stacks the default and to start
    considering removing the 8K stack option alltogether soon?

    One of the big problem spots was XFS, but that got some stack usage
    fixes recently, and the 4K stack option has been around for quite a
    while now, so people really should have gotten around to fixing any
    code that can't handle it. Are there still any big problem areas

    As a starting point, something like the patch below that makes 4K
    stacks default and make them no longer depend on DEBUG_KERNEL
    could be the way to go. Then after a while of this being in effect we
    could remove the option of a 8K stack alltogether.

    What say you?

    Signed-off-by: Jesper Juhl <>
    arch/i386/Kconfig.debug | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/arch/i386/Kconfig.debug b/arch/i386/Kconfig.debug
    index b31c080..9b23bff 100644
    --- a/arch/i386/Kconfig.debug
    +++ b/arch/i386/Kconfig.debug
    @@ -58,7 +58,7 @@ config DEBUG_RODATA

    config 4KSTACKS
    bool "Use 4Kb for kernel stacks instead of 8Kb"
    - depends on DEBUG_KERNEL
    + default y
    If you say Y here the kernel will use a 4Kb stacksize for the
    kernel stack attached to each process/thread. This facilitates

    Jesper Juhl <>
    Don't top-post
    Plain text mails only, please

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