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    SubjectRe: [PATCH] lockdep: increase static allocations
    On Thu, Jan 09, 2014 at 12:23:22AM +0100, Andi Kleen wrote:
    > On Wed, Jan 08, 2014 at 03:10:55PM -0500, Sasha Levin wrote:
    > > On 01/08/2014 02:51 PM, Andi Kleen wrote:
    > > >Sasha Levin <sasha.levin@oracle.com> writes:
    > > >
    > > >>Fuzzing a recent kernel with a large configuration hits the static
    > > >>allocation limits and disables lockdep.
    > > >
    > > >Doesn't that use a lot more memory? I thought lockdep preallocates.
    > > >
    > > >Doubling may be too aggressive.
    > >
    > > The patch adds about 4MB of memory usage, I didn't think it's too much for something
    > > that is only enabled during debugging.
    >
    > Wasting 4MB is an issue.
    >
    > Linus' first Linux system had less total memory than that.

    Meh.. if someone from the embedded people care we can add
    CONFIG_BASE_SMALL option, until then I couldn't care less about 4m.

    > >
    > > If this is an issue, can I suggest making these values configurable in the .config
    > > and just let users pick whatever they want?
    >
    > Better allocate it at boot time, using a boot parameter or somesuch.

    wrongbot andi is at it again.. no that's far too late.


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