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smb3: add dynamic tracepoints for flush and close 

We only had dynamic tracepoints on errors in flush
and close, but may be helpful to trace enter
and non-error exits for those.  Sample trace examples
(excerpts) from "cp" and "dd" show two of the new
tracepoints.

  cp-22823 [002] .... 123439.179701: smb3_enter: _cifsFileInfo_put: xid=10
  cp-22823 [002] .... 123439.179705: smb3_close_enter: xid=10 sid=0x98871327 tid=0xfcd585ff fid=0xc7f84682
  cp-22823 [002] .... 123439.179711: smb3_cmd_enter: sid=0x98871327 tid=0xfcd585ff cmd=6 mid=43
  cp-22823 [002] .... 123439.180175: smb3_cmd_done: sid=0x98871327 tid=0xfcd585ff cmd=6 mid=43
  cp-22823 [002] .... 123439.180179: smb3_close_done: xid=10 sid=0x98871327 tid=0xfcd585ff fid=0xc7f84682

  dd-22981 [003] .... 123696.946011: smb3_flush_enter: xid=24 sid=0x98871327 tid=0xfcd585ff fid=0x1917736f
  dd-22981 [003] .... 123696.946013: smb3_cmd_enter: sid=0x98871327 tid=0xfcd585ff cmd=7 mid=123
  dd-22981 [003] .... 123696.956639: smb3_cmd_done: sid=0x98871327 tid=0x0 cmd=7 mid=123
  dd-22981 [003] .... 123696.956644: smb3_flush_done: xid=24 sid=0x98871327 tid=0xfcd585ff fid=0x1917736f

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
This commit is contained in:
Steve French 2019-09-03 18:35:42 -05:00
parent cae53f70f8
commit f90f979726
2 changed files with 43 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
fs/cifs/smb2pdu.c
View File

@ -2918,6 +2918,7 @@ SMB2_close_flags(const unsigned int xid, struct cifs_tcon *tcon,
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
trace_smb3_close_enter(xid, persistent_fid, tcon->tid, ses->Suid);
rc = SMB2_close_init(tcon, &rqst, persistent_fid, volatile_fid);
if (rc)
goto close_exit;
@ -2930,7 +2931,9 @@ SMB2_close_flags(const unsigned int xid, struct cifs_tcon *tcon,
trace_smb3_close_err(xid, persistent_fid, tcon->tid, ses->Suid,
rc);
goto close_exit;
}
} else
trace_smb3_close_done(xid, persistent_fid, tcon->tid,
ses->Suid);
atomic_dec(&tcon->num_remote_opens);
@ -3353,13 +3356,16 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
if (rc)
goto flush_exit;
trace_smb3_flush_enter(xid, persistent_fid, tcon->tid, ses->Suid);
rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
if (rc != 0) {
cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE);
trace_smb3_flush_err(xid, persistent_fid, tcon->tid, ses->Suid,
rc);
}
} else
trace_smb3_flush_done(xid, persistent_fid, tcon->tid,
ses->Suid);
flush_exit:
SMB2_flush_free(&rqst);

35
fs/cifs/trace.h
View File

@ -117,6 +117,41 @@ DEFINE_SMB3_RW_DONE_EVENT(falloc_done);
/*
* For handle based calls other than read and write, and get/set info
*/
DECLARE_EVENT_CLASS(smb3_fd_class,
TP_PROTO(unsigned int xid,
__u64 fid,
__u32 tid,
__u64 sesid),
TP_ARGS(xid, fid, tid, sesid),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u64, fid)
__field(__u32, tid)
__field(__u64, sesid)
),
TP_fast_assign(
__entry->xid = xid;
__entry->fid = fid;
__entry->tid = tid;
__entry->sesid = sesid;
),
TP_printk("\txid=%u sid=0x%llx tid=0x%x fid=0x%llx",
__entry->xid, __entry->sesid, __entry->tid, __entry->fid)
)
#define DEFINE_SMB3_FD_EVENT(name) \
DEFINE_EVENT(smb3_fd_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u64 fid, \
__u32 tid, \
__u64 sesid), \
TP_ARGS(xid, fid, tid, sesid))
DEFINE_SMB3_FD_EVENT(flush_enter);
DEFINE_SMB3_FD_EVENT(flush_done);
DEFINE_SMB3_FD_EVENT(close_enter);
DEFINE_SMB3_FD_EVENT(close_done);
DECLARE_EVENT_CLASS(smb3_fd_err_class,
TP_PROTO(unsigned int xid,
__u64 fid,