1. 08 Apr, 2015 1 commit
  2. 28 May, 2013 1 commit
  3. 24 Oct, 2011 1 commit
    • Aneesh Kumar K.V's avatar
      net/9p: Convert net/9p protocol dumps to tracepoints · 348b5901
      Aneesh Kumar K.V authored
      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: <stack trace>
       => 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: <stack trace>
       => 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: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
      Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
      348b5901