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xprtrdma: Enhance MR-related trace points

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Two changes:
- Show the number of SG entries that were mapped. This helps debug
  DMA-related problems.
- Record the MR's resource ID instead of its memory address. This
  groups each MR with its associated rdma-tool output, and reduces
  needless exposure of memory addresses.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2020-02-12 11:12:35 -05:00 committed by Anna Schumaker
parent fb33c6510d
commit 62a89501a3
2 changed files with 31 additions and 27 deletions
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56
include/trace/events/rpcrdma.h
View File

@ -228,20 +228,20 @@ DECLARE_EVENT_CLASS(xprtrdma_frwr_done,
TP_ARGS(wc, frwr),
TP_STRUCT__entry(
__field(const void *, mr)
__field(u32, mr_id)
__field(unsigned int, status)
__field(unsigned int, vendor_err)
),
TP_fast_assign(
__entry->mr = container_of(frwr, struct rpcrdma_mr, frwr);
__entry->mr_id = frwr->fr_mr->res.id;
__entry->status = wc->status;
__entry->vendor_err = __entry->status ? wc->vendor_err : 0;
),
TP_printk(
"mr=%p: %s (%u/0x%x)",
__entry->mr, rdma_show_wc_status(__entry->status),
"mr.id=%u: %s (%u/0x%x)",
__entry->mr_id, rdma_show_wc_status(__entry->status),
__entry->status, __entry->vendor_err
)
);
@ -274,7 +274,8 @@ DECLARE_EVENT_CLASS(xprtrdma_mr,
TP_ARGS(mr),
TP_STRUCT__entry(
__field(const void *, mr)
__field(u32, mr_id)
__field(int, nents)
__field(u32, handle)
__field(u32, length)
__field(u64, offset)
@ -282,15 +283,16 @@ DECLARE_EVENT_CLASS(xprtrdma_mr,
),
TP_fast_assign(
__entry->mr = mr;
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->nents = mr->mr_nents;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
__entry->offset = mr->mr_offset;
__entry->dir = mr->mr_dir;
),
TP_printk("mr=%p %u@0x%016llx:0x%08x (%s)",
__entry->mr, __entry->length,
TP_printk("mr.id=%u nents=%d %u@0x%016llx:0x%08x (%s)",
__entry->mr_id, __entry->nents, __entry->length,
(unsigned long long)__entry->offset, __entry->handle,
xprtrdma_show_direction(__entry->dir)
)
@ -920,17 +922,17 @@ TRACE_EVENT(xprtrdma_frwr_alloc,
TP_ARGS(mr, rc),
TP_STRUCT__entry(
__field(const void *, mr)
__field(u32, mr_id)
__field(int, rc)
),
TP_fast_assign(
__entry->mr = mr;
__entry->rc = rc;
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->rc = rc;
),
TP_printk("mr=%p: rc=%d",
__entry->mr, __entry->rc
TP_printk("mr.id=%u: rc=%d",
__entry->mr_id, __entry->rc
)
);
@ -943,7 +945,8 @@ TRACE_EVENT(xprtrdma_frwr_dereg,
TP_ARGS(mr, rc),
TP_STRUCT__entry(
__field(const void *, mr)
__field(u32, mr_id)
__field(int, nents)
__field(u32, handle)
__field(u32, length)
__field(u64, offset)
@ -952,7 +955,8 @@ TRACE_EVENT(xprtrdma_frwr_dereg,
),
TP_fast_assign(
__entry->mr = mr;
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->nents = mr->mr_nents;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
__entry->offset = mr->mr_offset;
@ -960,8 +964,8 @@ TRACE_EVENT(xprtrdma_frwr_dereg,
__entry->rc = rc;
),
TP_printk("mr=%p %u@0x%016llx:0x%08x (%s): rc=%d",
__entry->mr, __entry->length,
TP_printk("mr.id=%u nents=%d %u@0x%016llx:0x%08x (%s): rc=%d",
__entry->mr_id, __entry->nents, __entry->length,
(unsigned long long)__entry->offset, __entry->handle,
xprtrdma_show_direction(__entry->dir),
__entry->rc
@ -977,21 +981,21 @@ TRACE_EVENT(xprtrdma_frwr_sgerr,
TP_ARGS(mr, sg_nents),
TP_STRUCT__entry(
__field(const void *, mr)
__field(u32, mr_id)
__field(u64, addr)
__field(u32, dir)
__field(int, nents)
),
TP_fast_assign(
__entry->mr = mr;
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->addr = mr->mr_sg->dma_address;
__entry->dir = mr->mr_dir;
__entry->nents = sg_nents;
),
TP_printk("mr=%p dma addr=0x%llx (%s) sg_nents=%d",
__entry->mr, __entry->addr,
TP_printk("mr.id=%u DMA addr=0x%llx (%s) sg_nents=%d",
__entry->mr_id, __entry->addr,
xprtrdma_show_direction(__entry->dir),
__entry->nents
)
@ -1006,7 +1010,7 @@ TRACE_EVENT(xprtrdma_frwr_maperr,
TP_ARGS(mr, num_mapped),
TP_STRUCT__entry(
__field(const void *, mr)
__field(u32, mr_id)
__field(u64, addr)
__field(u32, dir)
__field(int, num_mapped)
@ -1014,15 +1018,15 @@ TRACE_EVENT(xprtrdma_frwr_maperr,
),
TP_fast_assign(
__entry->mr = mr;
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->addr = mr->mr_sg->dma_address;
__entry->dir = mr->mr_dir;
__entry->num_mapped = num_mapped;
__entry->nents = mr->mr_nents;
),
TP_printk("mr=%p dma addr=0x%llx (%s) nents=%d of %d",
__entry->mr, __entry->addr,
TP_printk("mr.id=%u DMA addr=0x%llx (%s) nents=%d of %d",
__entry->mr_id, __entry->addr,
xprtrdma_show_direction(__entry->dir),
__entry->num_mapped, __entry->nents
)
@ -1031,7 +1035,7 @@ TRACE_EVENT(xprtrdma_frwr_maperr,
DEFINE_MR_EVENT(localinv);
DEFINE_MR_EVENT(map);
DEFINE_MR_EVENT(unmap);
DEFINE_MR_EVENT(remoteinv);
DEFINE_MR_EVENT(reminv);
DEFINE_MR_EVENT(recycle);
TRACE_EVENT(xprtrdma_dma_maperr,

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

@ -419,7 +419,7 @@ void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs)
list_for_each_entry(mr, mrs, mr_list)
if (mr->mr_handle == rep->rr_inv_rkey) {
list_del_init(&mr->mr_list);
trace_xprtrdma_mr_remoteinv(mr);
trace_xprtrdma_mr_reminv(mr);
rpcrdma_mr_put(mr);
break; /* only one invalidated MR per RPC */
}