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| author | Chuck Lever <chuck.lever@oracle.com> | 2018-03-27 10:53:27 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2018-04-03 15:08:15 -0400 |
| commit | d890be159a71395bd4ceca09233a8a56d7da69ee (patch) | |
| tree | c8e7089ab7e52770d57842ecd189275de08bd789 /fs/nfsd/trace.h | |
| parent | f394b62b7b0dd24757e9813e19f4b6091c5a28f6 (diff) | |
| download | lwn-d890be159a71395bd4ceca09233a8a56d7da69ee.tar.gz lwn-d890be159a71395bd4ceca09233a8a56d7da69ee.zip | |
nfsd: Add I/O trace points in the NFSv4 write path
NFSv4 write compound processing invokes nfsd_vfs_write directly. The
trace points currently in nfsd_write are not effective for NFSv4
writes.
Move the trace points into the shared nfsd_vfs_write() helper.
After the I/O, we also want to record any local I/O error that
might have occurred, and the total count of bytes that were actually
moved (rather than the requested number).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/trace.h')
| -rw-r--r-- | fs/nfsd/trace.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index 30e04852a4e0..653e9ee754d2 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -51,6 +51,39 @@ DEFINE_NFSD_IO_EVENT(write_opened); DEFINE_NFSD_IO_EVENT(write_io_done); DEFINE_NFSD_IO_EVENT(write_done); +DECLARE_EVENT_CLASS(nfsd_err_class, + TP_PROTO(struct svc_rqst *rqstp, + struct svc_fh *fhp, + loff_t offset, + int status), + TP_ARGS(rqstp, fhp, offset, status), + TP_STRUCT__entry( + __field(u32, xid) + __field(u32, fh_hash) + __field(loff_t, offset) + __field(int, status) + ), + TP_fast_assign( + __entry->xid = be32_to_cpu(rqstp->rq_xid); + __entry->fh_hash = knfsd_fh_hash(&fhp->fh_handle); + __entry->offset = offset; + __entry->status = status; + ), + TP_printk("xid=0x%08x fh_hash=0x%08x offset=%lld status=%d", + __entry->xid, __entry->fh_hash, + __entry->offset, __entry->status) +) + +#define DEFINE_NFSD_ERR_EVENT(name) \ +DEFINE_EVENT(nfsd_err_class, nfsd_##name, \ + TP_PROTO(struct svc_rqst *rqstp, \ + struct svc_fh *fhp, \ + loff_t offset, \ + int len), \ + TP_ARGS(rqstp, fhp, offset, len)) + +DEFINE_NFSD_ERR_EVENT(write_err); + #include "state.h" DECLARE_EVENT_CLASS(nfsd_stateid_class, |