linux.git/include/trace/events/sunrpc.h, branch v5.12

SUNRPC: Display RPC procedure names instead of proc numbers

2021-01-25T14:36:23+00:00

Make the sunrpc trace subsystem trace events easier to use.

Signed-off-by: Chuck Lever

SUNRPC: Move the svc_xdr_recvfrom tracepoint again

2021-01-13T14:13:20+00:00

Commit 156708adf2d9 ("SUNRPC: Move the svc_xdr_recvfrom()
tracepoint") tried to capture the correct XID in the trace record,
but this line in svc_recv:

	rqstp->rq_xid = svc_getu32(&rqstp->rq_arg.head[0]);

alters the size of rq_arg.head[0].iov_len. The tracepoint records
the correct XID but an incorrect value for the length of the
xdr_buf's head.

To keep the trace callsites simple, I've created two trace classes.
One assumes the xdr_buf contains a full RPC message, and the XID
can be extracted from it. The other assumes the contents of the
xdr_buf are arbitrary, and the xid will be provided by the caller.

Currently there is only one user of each class, but I expect we will
need a few more tracepoints using each class as time goes on.

Signed-off-by: Chuck Lever

SUNRPC: Move the svc_xdr_recvfrom() tracepoint

2020-11-30T18:00:24+00:00

Commit c509f15a5801 ("SUNRPC: Split the xdr_buf event class") added
display of the rqst's XID to the svc_xdr_buf_class. However, when
the recvfrom tracepoint fires, rq_xid has yet to be filled in with
the current XID. So it ends up recording the previous XID that was
handled by that svc_rqst.

Signed-off-by: Chuck Lever

SUNRPC: Fix oops in the rpc_xdr_buf event class

2020-11-12T20:56:51+00:00

Backchannel rpc tasks don't have task->tk_client set, so it's necessary
to check it for NULL before dereferencing.

Fixes: c509f15a5801 ("SUNRPC: Split the xdr_buf event class")
Signed-off-by: Scott Mayhew 
Reviewed-by: Chuck Lever 
Signed-off-by: J. Bruce Fields

SUNRPC: Fix general protection fault in trace_rpc_xdr_overflow()

2020-11-05T22:20:12+00:00

The TP_fast_assign() section is careful enough not to dereference
xdr->rqst if it's NULL. The TP_STRUCT__entry section is not.

Fixes: 5582863f450c ("SUNRPC: Add XDR overflow trace event")
Signed-off-by: Chuck Lever 
Signed-off-by: J. Bruce Fields

SUNRPC: Remove dprintk call sites in RPC queuing functions

2020-09-21T14:21:09+00:00

Remove redundant call sites or call sites that are already covered
by tracepoints.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

SUNRPC: Clean up RPC scheduler tracepoints

2020-09-21T14:21:09+00:00

Remove several redundant dprintk call sites, and replace a couple of
potentially useful ones with tracepoints.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

SUNRPC: Replace rpcbind dprintk call sites with tracepoints

2020-09-21T14:21:09+00:00

In many cases, tracepoints already report these errors. In others,
the dprintks were mainly useful when this code was less mature.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

SUNRPC: Hoist trace_xprtrdma_op_setport into generic code

2020-09-21T14:21:09+00:00

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

SUNRPC: Remove rpcb_getport_async dprintk call sites

2020-09-21T14:21:09+00:00

In many cases, tracepoints already report these errors. In others,
the dprintks were mainly useful when this code was less mature.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker