Eric Lee / smarc-fsl-linux-kernel

18 Jun, 2006

1 commit

24 May, 2006

1 commit

27 Mar, 2006

3 commits

  • 93d2341c7   [PATCH] mempool: use mempool_create_slab_pool() ... Browse Code »

    Modify well over a dozen mempool users to call mempool_create_slab_pool()
    rather than calling mempool_create() with extra arguments, saving about 30
    lines of code and increasing readability.

    Signed-off-by: Matthew Dobson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Matthew Dobson
     
  • 0eaae62ab   [PATCH] mempool: use common mempool kmalloc allocator ... Browse Code »

    This patch changes several mempool users, all of which are basically just
    wrappers around kmalloc(), to use the common mempool_kmalloc/kfree, rather
    than their own wrapper function, removing a bunch of duplicated code.

    Signed-off-by: Matthew Dobson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Matthew Dobson
     
  • fa3536cc1   [PATCH] Use __read_mostly on some hot fs variables ... Browse Code »

    I discovered on oprofile hunting on a SMP platform that dentry lookups were
    slowed down because d_hash_mask, d_hash_shift and dentry_hashtable were in
    a cache line that contained inodes_stat. So each time inodes_stats is
    changed by a cpu, other cpus have to refill their cache line.

    This patch moves some variables to the __read_mostly section, in order to
    avoid false sharing. RCU dentry lookups can go full speed.

    Signed-off-by: Eric Dumazet
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Eric Dumazet
     

26 Mar, 2006

1 commit

24 Mar, 2006

1 commit

23 Mar, 2006

1 commit

  • b0e6e9629   [PATCH] reduce size of bio mempools ... Browse Code »

    The biovec default mempool limit of 256 entries results in over 3MB of RAM
    being permanently pinned, even on systems with only 128MB of RAM. Since
    mempool tries to allocate from the system pool first, it makes sense to
    reduce the size of the mempool fallbacks to a more reasonable limit of 1-5
    entries -- enough for the system to be able to make progress even under
    load.

    Signed-off-by: Benjamin LaHaise
    Acked-by: Jens Axboe
    Cc: Matt Mackall
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Benjamin LaHaise
     

31 Jan, 2006

1 commit

15 Jan, 2006

1 commit

09 Jan, 2006

1 commit

06 Jan, 2006

1 commit

16 Dec, 2005

1 commit

  • defd94b75   [SCSI] seperate max_sectors from max_hw_sectors ... Browse Code »

    - export __blk_put_request and blk_execute_rq_nowait
    needed for async REQ_BLOCK_PC requests
    - seperate max_hw_sectors and max_sectors for block/scsi_ioctl.c and
    SG_IO bio.c helpers per Jens's last comments. Since block/scsi_ioctl.c SG_IO was
    already testing against max_sectors and SCSI-ml was setting max_sectors and
    max_hw_sectors to the same value this does not change any scsi SG_IO behavior. It only
    prepares ll_rw_blk.c, scsi_ioctl.c and bio.c for when SCSI-ml begins to set
    a valid max_hw_sectors for all LLDs. Today if a LLD does not set it
    SCSI-ml sets it to a safe default and some LLDs set it to a artificial low
    value to overcome memory and feedback issues.

    Note: Since we now cap max_sectors to BLK_DEF_MAX_SECTORS, which is 1024,
    drivers that used to call blk_queue_max_sectors with a large value of
    max_sectors will now see the fs requests capped to BLK_DEF_MAX_SECTORS.

    Signed-off-by: Mike Christie
    Signed-off-by: James Bottomley

    Mike Christie
     

15 Dec, 2005

1 commit

  • 6e68af666   [SCSI] Convert SCSI mid-layer to scsi_execute_async ... Browse Code »

    Add scsi helpers to create really-large-requests and convert
    scsi-ml to scsi_execute_async().

    Per Jens's previous comments, I placed this function in scsi_lib.c.
    I made it follow all the queue's limits - I think I did at least :), so
    I removed the warning on the function header.

    I think the scsi_execute_* functions should eventually take a request_queue
    and be placed some place where the dm-multipath hw_handler can use them
    if that failover code is going to stay in the kernel. That conversion
    patch will be sent in another mail though.

    Signed-off-by: Mike Christie
    Signed-off-by: James Bottomley

    Mike Christie
     

28 Oct, 2005

1 commit

  • 27496a8c6   [PATCH] gfp_t: fs/* ... Browse Code »

    - ->releasepage() annotated (s/int/gfp_t), instances updated
    - missing gfp_t in fs/* added
    - fixed misannotation from the original sweep caught by bitwise checks:
    XFS used __nocast both for gfp_t and for flags used by XFS allocator.
    The latter left with unsigned int __nocast; we might want to add a
    different type for those but for now let's leave them alone. That,
    BTW, is a case when __nocast use had been actively confusing - it had
    been used in the same code for two different and similar types, with
    no way to catch misuses. Switch of gfp_t to bitwise had caught that
    immediately...

    One tricky bit is left alone to be dealt with later - mapping->flags is
    a mix of gfp_t and error indications. Left alone for now.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

09 Oct, 2005

1 commit

  • dd0fc66fb   [PATCH] gfp flags annotations - part 1 ... Browse Code »

    - added typedef unsigned int __nocast gfp_t;

    - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
    the same warnings as far as sparse is concerned, doesn't change
    generated code (from gcc point of view we replaced unsigned int with
    typedef) and documents what's going on far better.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

10 Sep, 2005

1 commit

08 Sep, 2005

2 commits

28 Aug, 2005

1 commit

08 Aug, 2005

1 commit

28 Jul, 2005

1 commit

  • a5453be48   [PATCH] bio_clone fix ... Browse Code »

    Fix bug introduced in 2.6.11-rc2: when we clone a BIO we need to copy over the
    current index into it as well.

    It corrupts data with some MD setups.

    See http://bugzilla.kernel.org/show_bug.cgi?id=4946

    Huuuuuuuuge thanks to Matthew Stapleton for doggedly
    chasing this one down.

    Acked-by: Jens Axboe
    Cc:
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     

08 Jul, 2005

1 commit

  • 6c036527a   [PATCH] mostly_read data section ... Browse Code »

    Add a new section called ".data.read_mostly" for data items that are read
    frequently and rarely written to like cpumaps etc.

    If these maps are placed in the .data section then these frequenly read
    items may end up in cachelines with data is is frequently updated. In that
    case all processors in an SMP system must needlessly reload the cachelines
    again and again containing elements of those frequently used variables.

    The ability to share these cachelines will allow each cpu in an SMP system
    to keep local copies of those shared cachelines thereby optimizing
    performance.

    Signed-off-by: Alok N Kataria
    Signed-off-by: Shobhit Dayal
    Signed-off-by: Christoph Lameter
    Signed-off-by: Shai Fultheim
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

20 Jun, 2005

3 commits

01 May, 2005

1 commit

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