net/9p: Convert net/9p protocol dumps to tracepoints
authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Sat, 6 Aug 2011 19:16:59 +0000 (00:16 +0530)
committerEric Van Hensbergen <ericvh@gmail.com>
Mon, 24 Oct 2011 16:13:12 +0000 (11:13 -0500)
commit348b59012e5c6402741d067cf6eeeb6271999d06
tree38041cac7af6f020fa2756eded6a2d9f31132ffc
parentef6b0807e2c986d5f1cb878e1b32a7cf4c32b4c8
net/9p: Convert net/9p protocol dumps to tracepoints

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: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
fs/9p/vfs_dir.c
include/net/9p/9p.h
include/net/9p/client.h
include/trace/events/9p.h [new file with mode: 0644]
net/9p/client.c
net/9p/protocol.c
net/9p/protocol.h