[ewg] 1.5.4 pull request

[Mike Marciniszyn]

Vlad,

Please pull the following patches from
git.openfabrics.org/~mmarciniszyn/scm/linux-2.6.to_ofed.

Thanks!
Mike

commit afbcb93ce910f9e8eb335145b0b06ef8ced784ab
Author: Ram Vepa <ram.vepa at qlogic.com>
Date:   Tue Jul 26 10:42:09 2011 -0400

    IB/qib: Adjust to use cpumask_weight() and cpumask_first()

    The cpus_weight macro doesn't work correctly when the
    CONFIG_CPUMASK_OFFSTACK is chosen.

    The macro can walk run off the end of the valid bits in the
    mask because NR_CPUS is much larger than the actual number of bits.

    This patch adjusts the code to use the APIs that were added
    for kernels >= 2.6.30.  Backport adjustments will need to be
    made for older kernels.

    An equivalent patch was also submitted submitted externally by
    KOSAKI Motohiro <kosaki.motohiro at jp.fujitsu.com>.

    Signed-off-by: Mike Marciniszyn <mike.marciniszyn at qlogic.com>

commit 2484eae46e66f32f3a7db0fa2799c1a87240bc1b
Author: Ram Vepa <ram.vepa at qlogic.com>
Date:   Tue Jul 26 08:03:24 2011 -0400

    IB/qib: add sysfs interface to read free contexts

    Indicate the number of free user contexts via the sysfs file
    /sys/class/infiniband/qib0/nfreectxts as required for PSM.

    Signed-off-by: Ram Vepa <ram.vepa at qlogic.com>
    Signed-off-by: Mike Marciniszyn <mike.marciniszyn at qlogic.com>

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