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    SubjectRe: [uClinux-dev] [PATCH] NOMMU: fix malloc performance by addinguninitialized flag
    On Tue 13 Oct 2009 03:44, Mike Frysinger pondered:
    > From: Jie Zhang <>
    > The no-mmu code currently clears all anonymous mmap-ed memory. While this
    > is what we want in the default case, all memory allocation from userspace
    > under no-mmu has to go through this interface, including malloc() which is
    > allowed to return uninitialized memory. This can easily be a significant
    > performance slow down. So for constrained embedded systems were security
    > is irrelevant, allow people to avoid unnecessarily clearing memory.
    > Signed-off-by: Jie Zhang <>
    > Signed-off-by: Robin Getz <>

    Should be -- does not exist and will bounce.

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