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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-08-07 00:46:59 +0530 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@gmail.com> | 2011-10-24 11:13:12 -0500 |
| commit | 348b59012e5c6402741d067cf6eeeb6271999d06 (patch) | |
| tree | 38041cac7af6f020fa2756eded6a2d9f31132ffc /fs/9p | |
| parent | ef6b0807e2c986d5f1cb878e1b32a7cf4c32b4c8 (diff) | |
| download | lwn-348b59012e5c6402741d067cf6eeeb6271999d06.tar.gz lwn-348b59012e5c6402741d067cf6eeeb6271999d06.zip | |
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>
Diffstat (limited to 'fs/9p')
| -rw-r--r-- | fs/9p/vfs_dir.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c index ce6600f33659..598fff1a54e5 100644 --- a/fs/9p/vfs_dir.c +++ b/fs/9p/vfs_dir.c @@ -165,9 +165,8 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir) } while (rdir->head < rdir->tail) { p9stat_init(&st); - err = p9stat_read(rdir->buf + rdir->head, - rdir->tail - rdir->head, &st, - fid->clnt->proto_version); + err = p9stat_read(fid->clnt, rdir->buf + rdir->head, + rdir->tail - rdir->head, &st); if (err) { P9_DPRINTK(P9_DEBUG_VFS, "returned %d\n", err); err = -EIO; @@ -241,10 +240,9 @@ static int v9fs_dir_readdir_dotl(struct file *filp, void *dirent, while (rdir->head < rdir->tail) { - err = p9dirent_read(rdir->buf + rdir->head, - rdir->tail - rdir->head, - &curdirent, - fid->clnt->proto_version); + err = p9dirent_read(fid->clnt, rdir->buf + rdir->head, + rdir->tail - rdir->head, + &curdirent); if (err < 0) { P9_DPRINTK(P9_DEBUG_VFS, "returned %d\n", err); err = -EIO; |