development kernel tree: Changes to 'stable'

[git at git.openmoko.org]

 include/linux/sdio/ctsystem_linux.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

New commits:
commit 287b292cf95edbd82dc63085ae5f0167a6e8141f
Author: Jason Uhlenkott <jasonuhl at jasonuhl.org>
Date:   Tue Jul 15 11:37:45 2008 +0100

    sdio: use interruptible sleep in kthread main loops
    
    My FreeRunner's load average was leveling off at 2.00 as a result of
    these two kernel threads:
    
    SDIO Helper   D c02b4500     0   255      2
    [<c02b4298>] (schedule+0x0/0x2d4) from [<c02b4040>] (__down+0x100/0x158)
    [<c02b3f40>] (__down+0x0/0x158) from [<c02b3e2c>] (__down_failed+0xc/0x20)
     r7:00000000 r6:c01fbd64 r5:c7cb7134 r4:c7d58000
    [<c01fa6fc>] (CardDetectHelperFunction+0x0/0x1ac) from [<c01fbd80>] (HelperLaunch+0x1c/0x28)
     r5:c7cb7134 r4:c7cb7134
    [<c01fbd64>] (HelperLaunch+0x0/0x28) from [<c005bbd0>] (kthread+0x60/0x94)
     r4:c7d58000
    [<c005bb70>] (kthread+0x0/0x94) from [<c0048f7c>] (do_exit+0x0/0x744)
     r6:00000000 r5:00000000 r4:00000000
    
    SDIO Helper   D c02b4500     0   259      2
    [<c02b4298>] (schedule+0x0/0x2d4) from [<c02b4040>] (__down+0x100/0x158)
    [<c02b3f40>] (__down+0x0/0x158) from [<c02b3e2c>] (__down_failed+0xc/0x20)
     r7:c0382bb4 r6:c0382b34 r5:c7d5a000 r4:00000001
    [<c01f9104>] (SDIOIrqHelperFunction+0x0/0x29c) from [<c01fbd80>] (HelperLaunch+0x1c/0x28)
     r8:00000000 r7:00000000 r6:c01fbd64 r5:c0382bb4 r4:c0382bb4
    [<c01fbd64>] (HelperLaunch+0x0/0x28) from [<c005bbd0>] (kthread+0x60/0x94)
     r4:c7d5a000
    [<c005bb70>] (kthread+0x0/0x94) from [<c0048f7c>] (do_exit+0x0/0x744)
     r6:00000000 r5:00000000 r4:00000000
    
    This fixes them to use interruptible sleep primitives while waiting in
    their main loops, as is conventional for kernel threads.  They can't
    actually be interrupted since kernel threads ignore all signals, but
    by sleeping this way they get classified as long term waiters, and
    don't get counted as running for purposes of load average calculation.
    
    This is intended as a minimal fix.  In the longer term, it'd probably
    make sense to replace the semaphores with completions or something,
    and to do away with some of these StudlyCapped wrapper functions.
    
    Signed-off-by: Jason Uhlenkott <jasonuhl at jasonuhl.org>
    --
    
    This is untested, but what could possibly go wrong?  ;)