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    SubjectRe: T400 suspend/resume regression -- bisected to a mystery merge commit
    From
    On Mon, Sep 28, 2009 at 10:51 PM, Theodore Tso <tytso@mit.edu> wrote:
    > On Sun, Sep 27, 2009 at 06:13:42PM +0200, Rafael J. Wysocki wrote:
    >>
    >> commit c7121843685de2bf7f3afd3ae1d6a146010bf1fc
    >> Author: Magnus Damm <magnus.damm@gmail.com>
    >> Date:   Tue Jul 28 14:09:55 2009 -0700
    >>
    >>     clocksource: Save mult_orig in clocksource_disable()
    >>
    >> Please try to revert it and retest.
    >
    > Using Linus's suggested technique, I bisected it down to this commit:
    >
    > Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
    > Date:   Fri Aug 14 15:47:30 2009 +0200
    >
    >    timekeeping: Update clocksource with stop_machine
    >
    >    update_wall_time calls change_clocksource HZ times per second to check
    >    if a new clock source is available. In close to 100% of all calls
    >    there is no new clock. Replace the tick based check by an update done
    >    with stop_machine.
    >
    >    Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
    >    Cc: Ingo Molnar <mingo@elte.hu>
    >    Acked-by: John Stultz <johnstul@us.ibm.com>
    >    Cc: Daniel Walker <dwalker@fifo99.com>
    >    LKML-Reference: <20090814134810.711836357@de.ibm.com>
    >    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    >
    > Unfortunately there are a bunch of patches I'm trying to get in shape
    > to push to Linus (the merge window coincided unfortunately with
    > LinuxCon/Plumbeer's so I'm a bit behind) so I haven't had a chance to
    > take it further.  I'll try reverting each of the above two patches,
    > and report back in a day or two.

    Just checking, did need to revert
    c7121843685de2bf7f3afd3ae1d6a146010bf1fc? I hope not. =)

    / magnus
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