Eric Lee / smarc-fsl-linux-kernel

13 Jul, 2011

2 commits

20 Jan, 2010

1 commit

15 Dec, 2009

1 commit

  • 0b1b213fc   xfs: event tracing support ... Browse Code »

    Convert the old xfs tracing support that could only be used with the
    out of tree kdb and xfsidbg patches to use the generic event tracer.

    To use it make sure CONFIG_EVENT_TRACING is enabled and then enable
    all xfs trace channels by:

    echo 1 > /sys/kernel/debug/tracing/events/xfs/enable

    or alternatively enable single events by just doing the same in one
    event subdirectory, e.g.

    echo 1 > /sys/kernel/debug/tracing/events/xfs/xfs_ihold/enable

    or set more complex filters, etc. In Documentation/trace/events.txt
    all this is desctribed in more detail. To reads the events do a

    cat /sys/kernel/debug/tracing/trace

    Compared to the last posting this patch converts the tracing mostly to
    the one tracepoint per callsite model that other users of the new
    tracing facility also employ. This allows a very fine-grained control
    of the tracing, a cleaner output of the traces and also enables the
    perf tool to use each tracepoint as a virtual performance counter,
    allowing us to e.g. count how often certain workloads git various
    spots in XFS. Take a look at

    http://lwn.net/Articles/346470/

    for some examples.

    Also the btree tracing isn't included at all yet, as it will require
    additional core tracing features not in mainline yet, I plan to
    deliver it later.

    And the really nice thing about this patch is that it actually removes
    many lines of code while adding this nice functionality:

    fs/xfs/Makefile | 8
    fs/xfs/linux-2.6/xfs_acl.c | 1
    fs/xfs/linux-2.6/xfs_aops.c | 52 -
    fs/xfs/linux-2.6/xfs_aops.h | 2
    fs/xfs/linux-2.6/xfs_buf.c | 117 +--
    fs/xfs/linux-2.6/xfs_buf.h | 33
    fs/xfs/linux-2.6/xfs_fs_subr.c | 3
    fs/xfs/linux-2.6/xfs_ioctl.c | 1
    fs/xfs/linux-2.6/xfs_ioctl32.c | 1
    fs/xfs/linux-2.6/xfs_iops.c | 1
    fs/xfs/linux-2.6/xfs_linux.h | 1
    fs/xfs/linux-2.6/xfs_lrw.c | 87 --
    fs/xfs/linux-2.6/xfs_lrw.h | 45 -
    fs/xfs/linux-2.6/xfs_super.c | 104 ---
    fs/xfs/linux-2.6/xfs_super.h | 7
    fs/xfs/linux-2.6/xfs_sync.c | 1
    fs/xfs/linux-2.6/xfs_trace.c | 75 ++
    fs/xfs/linux-2.6/xfs_trace.h | 1369 +++++++++++++++++++++++++++++++++++++++++
    fs/xfs/linux-2.6/xfs_vnode.h | 4
    fs/xfs/quota/xfs_dquot.c | 110 ---
    fs/xfs/quota/xfs_dquot.h | 21
    fs/xfs/quota/xfs_qm.c | 40 -
    fs/xfs/quota/xfs_qm_syscalls.c | 4
    fs/xfs/support/ktrace.c | 323 ---------
    fs/xfs/support/ktrace.h | 85 --
    fs/xfs/xfs.h | 16
    fs/xfs/xfs_ag.h | 14
    fs/xfs/xfs_alloc.c | 230 +-----
    fs/xfs/xfs_alloc.h | 27
    fs/xfs/xfs_alloc_btree.c | 1
    fs/xfs/xfs_attr.c | 107 ---
    fs/xfs/xfs_attr.h | 10
    fs/xfs/xfs_attr_leaf.c | 14
    fs/xfs/xfs_attr_sf.h | 40 -
    fs/xfs/xfs_bmap.c | 507 +++------------
    fs/xfs/xfs_bmap.h | 49 -
    fs/xfs/xfs_bmap_btree.c | 6
    fs/xfs/xfs_btree.c | 5
    fs/xfs/xfs_btree_trace.h | 17
    fs/xfs/xfs_buf_item.c | 87 --
    fs/xfs/xfs_buf_item.h | 20
    fs/xfs/xfs_da_btree.c | 3
    fs/xfs/xfs_da_btree.h | 7
    fs/xfs/xfs_dfrag.c | 2
    fs/xfs/xfs_dir2.c | 8
    fs/xfs/xfs_dir2_block.c | 20
    fs/xfs/xfs_dir2_leaf.c | 21
    fs/xfs/xfs_dir2_node.c | 27
    fs/xfs/xfs_dir2_sf.c | 26
    fs/xfs/xfs_dir2_trace.c | 216 ------
    fs/xfs/xfs_dir2_trace.h | 72 --
    fs/xfs/xfs_filestream.c | 8
    fs/xfs/xfs_fsops.c | 2
    fs/xfs/xfs_iget.c | 111 ---
    fs/xfs/xfs_inode.c | 67 --
    fs/xfs/xfs_inode.h | 76 --
    fs/xfs/xfs_inode_item.c | 5
    fs/xfs/xfs_iomap.c | 85 --
    fs/xfs/xfs_iomap.h | 8
    fs/xfs/xfs_log.c | 181 +----
    fs/xfs/xfs_log_priv.h | 20
    fs/xfs/xfs_log_recover.c | 1
    fs/xfs/xfs_mount.c | 2
    fs/xfs/xfs_quota.h | 8
    fs/xfs/xfs_rename.c | 1
    fs/xfs/xfs_rtalloc.c | 1
    fs/xfs/xfs_rw.c | 3
    fs/xfs/xfs_trans.h | 47 +
    fs/xfs/xfs_trans_buf.c | 62 -
    fs/xfs/xfs_vnodeops.c | 8
    70 files changed, 2151 insertions(+), 2592 deletions(-)

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Alex Elder

    Christoph Hellwig
     

29 Mar, 2009

1 commit

07 Mar, 2009

1 commit

09 Feb, 2009

1 commit

30 Oct, 2008

2 commits

28 Jul, 2008

3 commits

  • 384f3ced0   [XFS] Return case-insensitive match for dentry cache ... Browse Code »

    This implements the code to store the actual filename found during a
    lookup in the dentry cache and to avoid multiple entries in the dcache
    pointing to the same inode.

    To avoid polluting the dcache, we implement a new directory inode
    operations for lookup. xfs_vn_ci_lookup() stores the correct case name in
    the dcache.

    The "actual name" is only allocated and returned for a case- insensitive
    match and not an actual match.

    Another unusual interaction with the dcache is not storing negative
    dentries like other filesystems doing a d_add(dentry, NULL) when an ENOENT
    is returned. During the VFS lookup, if a dentry returned has no inode,
    dput is called and ENOENT is returned. By not doing a d_add, this actually
    removes it completely from the dcache to be reused. create/rename have to
    be modified to support unhashed dentries being passed in.

    SGI-PV: 981521
    SGI-Modid: xfs-linux-melb:xfs-kern:31208a

    Signed-off-by: Barry Naujok
    Signed-off-by: Christoph Hellwig

    Barry Naujok
     
  • 6a178100a   [XFS] Add op_flags field and helpers to xfs_da_args ... Browse Code »

    The end of the xfs_da_args structure has 4 unsigned char fields for
    true/false information on directory and attr operations using the
    xfs_da_args structure.

    The following converts these 4 into a op_flags field that uses the first 4
    bits for these fields and allows expansion for future operation
    information (eg. case-insensitive lookup request).

    SGI-PV: 981520
    SGI-Modid: xfs-linux-melb:xfs-kern:31206a

    Signed-off-by: Barry Naujok
    Signed-off-by: Christoph Hellwig

    Barry Naujok
     
  • 5163f95a0   [XFS] Name operation vector for hash and compare ... Browse Code »

    Adds two pieces of functionality for the basis of case-insensitive support
    in XFS:

    1. A comparison result enumerated type: xfs_dacmp. It represents an

    exact match, case-insensitive match or no match at all. This patch

    only implements different and exact results.

    2. xfs_nameops vector for specifying how to perform the hash generation

    of filenames and comparision methods. In this patch the hash vector

    points to the existing xfs_da_hashname function and the comparison

    method does a length compare, and if the same, does a memcmp and

    return the xfs_dacmp result.

    All filename functions that use the hash (create, lookup remove, rename,
    etc) now use the xfs_nameops.hashname function and all directory lookup
    functions also use the xfs_nameops.compname function.

    The lookup functions also handle case-insensitive results even though the
    default comparison function cannot return that. And important aspect of
    the lookup functions is that an exact match always has precedence over a
    case-insensitive. So while a case-insensitive match is found, we have to
    keep looking just in case there is an exact match. In the meantime, the
    info for the first case-insensitive match is retained if no exact match is
    found.

    SGI-PV: 981519
    SGI-Modid: xfs-linux-melb:xfs-kern:31205a

    Signed-off-by: Barry Naujok
    Signed-off-by: Christoph Hellwig

    Barry Naujok
     

07 Feb, 2008

1 commit

  • a8272ce0c   [XFS] Fix up sparse warnings. ... Browse Code »

    These are mostly locking annotations, marking things static, casts where
    needed and declaring stuff in header files.

    SGI-PV: 971186
    SGI-Modid: xfs-linux-melb:xfs-kern:30002a

    Signed-off-by: David Chinner
    Signed-off-by: Christoph Hellwig
    Signed-off-by: Lachlan McIlroy

    David Chinner
     

10 Feb, 2007

1 commit

20 Jun, 2006

1 commit

17 Mar, 2006

3 commits

02 Nov, 2005

3 commits

21 Jun, 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