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    SubjectRe: [PATCH] mm: Warn about costly page allocation
    Date
    On Mon, 09 Jul 2012 at 08:46 GMT, Minchan Kim <minchan@kernel.org> wrote:
    >>
    >> WARN_ON_ONCE would tell you what is trying to satisfy the allocation.
    >
    > Do you mean that it would be better to use WARN_ON_ONCE rather than raw printk?
    > If so, I would like to insist raw printk because WARN_ON_ONCE could be disabled
    > by !CONFIG_BUG.
    > If I miss something, could you elaborate it more?
    >

    Raw printk could be disabled by !CONFIG_PRINTK too, and given that:

    config PRINTK
    default y
    bool "Enable support for printk" if EXPERT

    config BUG
    bool "BUG() support" if EXPERT
    default y

    they are both configurable only when ERPERT, so we don't need to
    worry much. :)



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