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    SubjectRe: b44: regression in 2.6.22 (resend)
    On Monday 28 May 2007, Thomas Gleixner wrote:
    > On Mon, 2007-05-28 at 19:44 +0200, Maximilian Engelhardt wrote:
    > > > Can you please keep CONFIG_HIGH_RES_TIMERS and CONFIG_NOHZ and try the
    > > > following combinations on the kernel command line:
    > > >
    > > > 1) highres=off nohz=off (should be the same as your working config)
    > > > 2) highres=off
    > > > 3) nohz=off
    > >
    > > I tested this with my 2.6.22-rc3 kernel, here are the results:
    > >
    > > without any special boot parameters: problem does appear
    > > highres=off nohz=off: problem does not appear
    > > highres=off: problem does not appear
    > > nohz=off: problem does appear
    > Is there any other strange behavior of the high res enabled kernel than
    > the b44 problem ?

    I didn't notice anything in the past (as I wrote). But today I did some tests
    for an updated version of the p54 mac80211 wlan driver and I noticed exactly
    the same problem:

    when booting with highres=off everything is fine.
    But when I boot an highres enabled kernel and I do the iperf-test with the p54
    driver, my systems becomes unresponsive during the test. It seems to be
    exactly the same problem I have with the b44 driver.
    So this might not be a bug in the b44 code but a bug somewhere in the linux
    networking code.

    I did the test with an 2.6.22-rc3-git4 kernel and the p54 driver built
    external as module.

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