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svcrdma: Trace page overruns when constructing RDMA Reads

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Clean up: Replace a dprintk call site with a tracepoint.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-03-20 14:33:05 -04:00
parent f4e53e1ce3
commit 9d20063892
2 changed files with 29 additions and 1 deletions
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28
include/trace/events/rpcrdma.h
View File

@ -1637,6 +1637,34 @@ TRACE_EVENT(svcrdma_no_rwctx_err,
)
);
TRACE_EVENT(svcrdma_page_overrun_err,
TP_PROTO(
const struct svcxprt_rdma *rdma,
const struct svc_rqst *rqst,
unsigned int pageno
),
TP_ARGS(rdma, rqst, pageno),
TP_STRUCT__entry(
__field(unsigned int, pageno)
__field(u32, xid)
__string(device, rdma->sc_cm_id->device->name)
__string(addr, rdma->sc_xprt.xpt_remotebuf)
),
TP_fast_assign(
__entry->pageno = pageno;
__entry->xid = __be32_to_cpu(rqst->rq_xid);
__assign_str(device, rdma->sc_cm_id->device->name);
__assign_str(addr, rdma->sc_xprt.xpt_remotebuf);
),
TP_printk("addr=%s device=%s xid=0x%08x pageno=%u", __get_str(addr),
__get_str(device), __entry->xid, __entry->pageno
)
);
TRACE_EVENT(svcrdma_send_pullup,
TP_PROTO(
unsigned int len

2
net/sunrpc/xprtrdma/svc_rdma_rw.c
View File

@ -676,7 +676,7 @@ static int svc_rdma_build_read_segment(struct svc_rdma_read_info *info,
return 0;
out_overrun:
dprintk("svcrdma: request overruns rq_pages\n");
trace_svcrdma_page_overrun_err(cc->cc_rdma, rqstp, info->ri_pageno);
return -EINVAL;
}