diff options
| author | Jeff Layton <jlayton@kernel.org> | 2025-05-03 15:59:25 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2025-05-11 19:48:32 -0400 |
| commit | 272e2b89b88a384f204d542b64bde0fb8e1fc12a (patch) | |
| tree | 0559ac0c8ddedf7028e143b3a480aad4b1207e6a | |
| parent | 2344b72302ac11efde40d64a5bc69e60c4f5ed87 (diff) | |
nfsd: add tracepoint to nfsd_link()
Observe the start of NFS LINK operations.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
| -rw-r--r-- | fs/nfsd/trace.h | 27 | ||||
| -rw-r--r-- | fs/nfsd/vfs.c | 2 |
2 files changed, 29 insertions, 0 deletions
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index e347cdaaa732..acbf94cfb720 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -2471,6 +2471,33 @@ TRACE_EVENT(nfsd_vfs_symlink, ) ); +TRACE_EVENT(nfsd_vfs_link, + TP_PROTO( + const struct svc_rqst *rqstp, + const struct svc_fh *sfhp, + const struct svc_fh *tfhp, + const char *name, + unsigned int namelen + ), + TP_ARGS(rqstp, sfhp, tfhp, name, namelen), + TP_STRUCT__entry( + NFSD_TRACE_PROC_CALL_FIELDS(rqstp) + __field(u32, sfh_hash) + __field(u32, tfh_hash) + __string_len(name, name, namelen) + ), + TP_fast_assign( + NFSD_TRACE_PROC_CALL_ASSIGNMENTS(rqstp); + __entry->sfh_hash = knfsd_fh_hash(&sfhp->fh_handle); + __entry->tfh_hash = knfsd_fh_hash(&tfhp->fh_handle); + __assign_str(name); + ), + TP_printk("xid=0x%08x src_fh=0x%08x tgt_fh=0x%08x name=%s", + __entry->xid, __entry->sfh_hash, __entry->tfh_hash, + __get_str(name) + ) +); + #endif /* _NFSD_TRACE_H */ #undef TRACE_INCLUDE_PATH diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index ecd453b260b6..30702f36db98 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1721,6 +1721,8 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, __be32 err; int host_err; + trace_nfsd_vfs_link(rqstp, ffhp, tfhp, name, len); + err = fh_verify(rqstp, ffhp, S_IFDIR, NFSD_MAY_CREATE); if (err) goto out; |