Eric Lee / smarc-fsl-linux-kernel

08 Aug, 2010

1 commit

20 May, 2010

1 commit

04 Sep, 2009

1 commit

14 Feb, 2009

1 commit

  • efab0b5d3   [JFFS2] force the jffs2 GC daemon to behave a bit better ... Browse Code »

    I've noticed some pretty poor behavior on OLPC machines after bootup, when
    gdm/X are starting. The GCD monopolizes the scheduler (which in turns
    means it gets to do more nand i/o), which results in processes taking much
    much longer than they should to start.

    As an example, on an OLPC machine going from OFW to a usable X (via
    auto-login gdm) takes 2m 30s. The majority of this time is consumed by
    the switch into graphical mode. With this patch, we cut a full 60s off of
    bootup time. After bootup, things are much snappier as well.

    Note that we have seen a CRC node error with this patch that causes the machine
    to fail to boot, but we've also seen that problem without this patch.

    Signed-off-by: Andres Salomon
    Signed-off-by: Andrew Morton
    Signed-off-by: David Woodhouse

    Andres Salomon
     

31 Oct, 2008

1 commit

04 Dec, 2007

1 commit

23 Jul, 2007

1 commit

18 Jul, 2007

1 commit

  • 831441862   Freezer: make kernel threads nonfreezable by default ... Browse Code »

    Currently, the freezer treats all tasks as freezable, except for the kernel
    threads that explicitly set the PF_NOFREEZE flag for themselves. This
    approach is problematic, since it requires every kernel thread to either
    set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
    care for the freezing of tasks at all.

    It seems better to only require the kernel threads that want to or need to
    be frozen to use some freezer-related code and to remove any
    freezer-related code from the other (nonfreezable) kernel threads, which is
    done in this patch.

    The patch causes all kernel threads to be nonfreezable by default (ie. to
    have PF_NOFREEZE set by default) and introduces the set_freezable()
    function that should be called by the freezable kernel threads in order to
    unset PF_NOFREEZE. It also makes all of the currently freezable kernel
    threads call set_freezable(), so it shouldn't cause any (intentional)
    change of behaviour to appear. Additionally, it updates documentation to
    describe the freezing of tasks more accurately.

    [akpm@linux-foundation.org: build fixes]
    Signed-off-by: Rafael J. Wysocki
    Acked-by: Nigel Cunningham
    Cc: Pavel Machek
    Cc: Oleg Nesterov
    Cc: Gautham R Shenoy
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Rafael J. Wysocki
     

10 Jul, 2007

1 commit

29 Jun, 2007

1 commit

25 Apr, 2007

1 commit

  • c00c310ea   [JFFS2] Tidy up licensing/copyright boilerplate. ... Browse Code »

    In particular, remove the bit in the LICENCE file about contacting
    Red Hat for alternative arrangements. Their errant IS department broke
    that arrangement a long time ago -- the policy of collecting copyright
    assignments from contributors came to an end when the plug was pulled on
    the servers hosting the project, without notice or reason.

    We do still dual-license it for use with eCos, with the GPL+exception
    licence approved by the FSF as being GPL-compatible. It's just that nobody
    has the right to license it differently.

    Signed-off-by: David Woodhouse

    David Woodhouse
     

08 Mar, 2007

1 commit

  • f8a922c7b   [JFFS2] Use yield() between GC passes in background thread. ... Browse Code »

    The garbage collection thread is strictly an optimisation. Everything it
    does would also be done just-in-time in the context of something in
    userspace trying to access the file system.

    Sometimes, however, it's a pessimisation. Especially during early boot
    when it's checksumming nodes and scanning inodes which are shortly going
    to be pulled in by read_inode anyway. We end up building the rbtree of
    node coverage twice for the same inode.

    By switching to yield() instead of cond_resched() in the main loop, we
    observe boot times on the OLPC system going down from about 100 seconds to
    60.

    Signed-off-by: David Woodhouse

    David Woodhouse
     

08 Dec, 2006

1 commit

01 Apr, 2006

1 commit

07 Nov, 2005

1 commit

31 Oct, 2005

1 commit

  • 4e57b6817   [PATCH] fix missing includes ... Browse Code »

    I recently picked up my older work to remove unnecessary #includes of
    sched.h, starting from a patch by Dave Jones to not include sched.h
    from module.h. This reduces the number of indirect includes of sched.h
    by ~300. Another ~400 pointless direct includes can be removed after
    this disentangling (patch to follow later).
    However, quite a few indirect includes need to be fixed up for this.

    In order to feed the patches through -mm with as little disturbance as
    possible, I've split out the fixes I accumulated up to now (complete for
    i386 and x86_64, more archs to follow later) and post them before the real
    patch. This way this large part of the patch is kept simple with only
    adding #includes, and all hunks are independent of each other. So if any
    hunk rejects or gets in the way of other patches, just drop it. My scripts
    will pick it up again in the next round.

    Signed-off-by: Tim Schmielau
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tim Schmielau
     

27 Jun, 2005

1 commit

26 Jun, 2005

1 commit

23 May, 2005

2 commits

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds