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svcrdma: trace undersized Write chunks 

Clean up: Replace a dprintk call site.

This is the last remaining dprintk call site in svc_rdma_rw.c, so
remove dprintk infrastructure as well.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-03-20 14:36:44 -04:00
parent 9d20063892
commit dbc17acd5d
2 changed files with 34 additions and 5 deletions
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32
include/trace/events/rpcrdma.h
View File

@ -1665,6 +1665,38 @@ TRACE_EVENT(svcrdma_page_overrun_err,
)
);
TRACE_EVENT(svcrdma_small_wrch_err,
TP_PROTO(
const struct svcxprt_rdma *rdma,
unsigned int remaining,
unsigned int seg_no,
unsigned int num_segs
),
TP_ARGS(rdma, remaining, seg_no, num_segs),
TP_STRUCT__entry(
__field(unsigned int, remaining)
__field(unsigned int, seg_no)
__field(unsigned int, num_segs)
__string(device, rdma->sc_cm_id->device->name)
__string(addr, rdma->sc_xprt.xpt_remotebuf)
),
TP_fast_assign(
__entry->remaining = remaining;
__entry->seg_no = seg_no;
__entry->num_segs = num_segs;
__assign_str(device, rdma->sc_cm_id->device->name);
__assign_str(addr, rdma->sc_xprt.xpt_remotebuf);
),
TP_printk("addr=%s device=%s remaining=%u seg_no=%u num_segs=%u",
__get_str(addr), __get_str(device), __entry->remaining,
__entry->seg_no, __entry->num_segs
)
);
TRACE_EVENT(svcrdma_send_pullup,
TP_PROTO(
unsigned int len

7
net/sunrpc/xprtrdma/svc_rdma_rw.c
View File

@ -9,13 +9,10 @@
#include <linux/sunrpc/rpc_rdma.h>
#include <linux/sunrpc/svc_rdma.h>
#include <linux/sunrpc/debug.h>
#include "xprt_rdma.h"
#include <trace/events/rpcrdma.h>
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
static void svc_rdma_write_done(struct ib_cq *cq, struct ib_wc *wc);
static void svc_rdma_wc_read_done(struct ib_cq *cq, struct ib_wc *wc);
@ -484,8 +481,8 @@ svc_rdma_build_writes(struct svc_rdma_write_info *info,
return 0;
out_overflow:
dprintk("svcrdma: inadequate space in Write chunk (%u)\n",
info->wi_nsegs);
trace_svcrdma_small_wrch_err(rdma, remaining, info->wi_seg_no,
info->wi_nsegs);
return -E2BIG;
}