Eric Lee / smarc-fsl-linux-kernel

25 Oct, 2011

2 commits

  • 348b59012   net/9p: Convert net/9p protocol dumps to tracepoints ... Browse Code »

    This helps in more control over debugging.
    root@qemu-img-64:~# ls /pass/123
    ls: cannot access /pass/123: No such file or directory
    root@qemu-img-64:~# cat /sys/kernel/debug/tracing/trace
    # tracer: nop
    #
    # TASK-PID CPU# TIMESTAMP FUNCTION
    # | | | | |
    ls-1536 [001] 70.928584: 9p_protocol_dump: clnt 18446612132784021504 P9_TWALK(tag = 1)
    000: 16 00 00 00 6e 01 00 01 00 00 00 02 00 00 00 01
    010: 00 03 00 31 32 33 00 00 00 ff ff ff ff 00 00 00

    ls-1536 [001] 70.928587:
    => trace_9p_protocol_dump
    => p9pdu_finalize
    => p9_client_rpc
    => p9_client_walk
    => v9fs_vfs_lookup
    => d_alloc_and_lookup
    => walk_component
    => path_lookupat
    ls-1536 [000] 70.929696: 9p_protocol_dump: clnt 18446612132784021504 P9_RLERROR(tag = 1)
    000: 0b 00 00 00 07 01 00 02 00 00 00 4e 03 00 02 00
    010: 00 00 00 00 03 00 02 00 00 00 00 00 ff 43 00 00

    ls-1536 [000] 70.929697:
    => trace_9p_protocol_dump
    => p9_client_rpc
    => p9_client_walk
    => v9fs_vfs_lookup
    => d_alloc_and_lookup
    => walk_component
    => path_lookupat
    => do_path_lookup

    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Eric Van Hensbergen

    Aneesh Kumar K.V
     
  • abfa034e4   fs/9p: Update zero-copy implementation in 9p ... Browse Code »

    * remove lot of update to different data structure
    * add a seperate callback for zero copy request.
    * above makes non zero copy code path simpler
    * remove conditionalizing TREAD/TREADDIR/TWRITE in the zero copy path
    * Fix the dotu p9_check_errors with zero copy. Add sufficient doc around
    * Add support for both in and output buffers in zero copy callback
    * pin and unpin pages in the same context
    * use helpers instead of defining page offset and rest of page ourself
    * Fix mem leak in p9_check_errors
    * Remove 'E' and 'F' in p9pdu_vwritef

    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Eric Van Hensbergen

    Aneesh Kumar K.V
     

06 Mar, 2010

1 commit

18 Oct, 2008

2 commits

  • 51a87c552   9p: rework client code to use new protocol support functions ... Browse Code »

    Now that the new protocol functions are in place, this patch switches
    the client code to using the new support code.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen
     
  • ace51c4dd   9p: add new protocol support code ... Browse Code »

    This adds a new protocol processing support code based on Anthony Liguori's
    9p library code. This code performs protocol marshalling/unmarshalling using
    printf like strings to represent protocol elements. It is my intent to use
    them to replace the current functions in conv.c as well as the
    p9_create_* functions.

    This should make the client implementation much more clear, and also make it
    much easier to add new protocol extensions by limiting the number of places
    in which changes need to be made.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen