lkml.org 
[lkml]   [2006]   [Jul]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 2.6.17-rc6 7/9] Remove some of the kmemleak false positives

    * Ingo Molnar <mingo@elte.hu> wrote:

    > > To the other extreme is Ingo's suggestion of using exact type
    > > identification but I don't think this would be acceptable for the
    > > kernel as it would to modify all the memory alloc calls in the
    > > kernel to either pass an additional parameter (the type id) or
    > > another post-allocation call to kmemleak to update the id.
    >
    > passing in the type ID wouldnt be that bad and it would have other
    > advantages as well: for example we could do strict type-checking of
    > allocation size versus type-we-use-it-for.
    >
    > As long as the conversion is gradual i think we could try this. I.e.
    > we'd default to 'no ID passed', and in that case we would fall back to
    > the size-based method and generate an ID out of the structure size.

    update: there's also a neat gcc extension trick suggested by Arjan:
    __builtin_classify_type(). This converts types into integers!

    Ingo
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-07-24 13:25    [W:0.022 / U:31.864 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site