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xprtrdma: Add trace points to instrument memory registration 

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 2017-12-20 16:30:56 -05:00 committed by Anna Schumaker
parent b4a7f91c1d
commit 58f10ad40d
3 changed files with 163 additions and 22 deletions
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156
include/trace/events/rpcrdma.h
View File

@ -51,10 +51,164 @@ DECLARE_EVENT_CLASS(xprtrdma_reply_event,
), \
TP_ARGS(rep))
DECLARE_EVENT_CLASS(xprtrdma_rdch_event,
TP_PROTO(
const struct rpc_task *task,
unsigned int pos,
struct rpcrdma_mr *mr,
int nsegs
),
TP_ARGS(task, pos, mr, nsegs),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(const void *, mr)
__field(unsigned int, pos)
__field(int, nents)
__field(u32, handle)
__field(u32, length)
__field(u64, offset)
__field(int, nsegs)
),
TP_fast_assign(
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->mr = mr;
__entry->pos = pos;
__entry->nents = mr->mr_nents;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
__entry->offset = mr->mr_offset;
__entry->nsegs = nsegs;
),
TP_printk("task:%u@%u mr=%p pos=%u %u@0x%016llx:0x%08x (%s)",
__entry->task_id, __entry->client_id, __entry->mr,
__entry->pos, __entry->length,
(unsigned long long)__entry->offset, __entry->handle,
__entry->nents < __entry->nsegs ? "more" : "last"
)
);
#define DEFINE_RDCH_EVENT(name) \
DEFINE_EVENT(xprtrdma_rdch_event, name, \
TP_PROTO( \
const struct rpc_task *task, \
unsigned int pos, \
struct rpcrdma_mr *mr, \
int nsegs \
), \
TP_ARGS(task, pos, mr, nsegs))
DECLARE_EVENT_CLASS(xprtrdma_wrch_event,
TP_PROTO(
const struct rpc_task *task,
struct rpcrdma_mr *mr,
int nsegs
),
TP_ARGS(task, mr, nsegs),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(const void *, mr)
__field(int, nents)
__field(u32, handle)
__field(u32, length)
__field(u64, offset)
__field(int, nsegs)
),
TP_fast_assign(
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->mr = mr;
__entry->nents = mr->mr_nents;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
__entry->offset = mr->mr_offset;
__entry->nsegs = nsegs;
),
TP_printk("task:%u@%u mr=%p %u@0x%016llx:0x%08x (%s)",
__entry->task_id, __entry->client_id, __entry->mr,
__entry->length, (unsigned long long)__entry->offset,
__entry->handle,
__entry->nents < __entry->nsegs ? "more" : "last"
)
);
#define DEFINE_WRCH_EVENT(name) \
DEFINE_EVENT(xprtrdma_wrch_event, name, \
TP_PROTO( \
const struct rpc_task *task, \
struct rpcrdma_mr *mr, \
int nsegs \
), \
TP_ARGS(task, mr, nsegs))
TRACE_DEFINE_ENUM(FRWR_IS_INVALID);
TRACE_DEFINE_ENUM(FRWR_IS_VALID);
TRACE_DEFINE_ENUM(FRWR_FLUSHED_FR);
TRACE_DEFINE_ENUM(FRWR_FLUSHED_LI);
#define xprtrdma_show_frwr_state(x) \
__print_symbolic(x, \
{ FRWR_IS_INVALID, "INVALID" }, \
{ FRWR_IS_VALID, "VALID" }, \
{ FRWR_FLUSHED_FR, "FLUSHED_FR" }, \
{ FRWR_FLUSHED_LI, "FLUSHED_LI" })
DECLARE_EVENT_CLASS(xprtrdma_frwr_done,
TP_PROTO(
const struct ib_wc *wc,
const struct rpcrdma_frwr *frwr
),
TP_ARGS(wc, frwr),
TP_STRUCT__entry(
__field(const void *, mr)
__field(unsigned int, state)
__field(unsigned int, status)
__field(unsigned int, vendor_err)
),
TP_fast_assign(
__entry->mr = container_of(frwr, struct rpcrdma_mr, frwr);
__entry->state = frwr->fr_state;
__entry->status = wc->status;
__entry->vendor_err = __entry->status ? wc->vendor_err : 0;
),
TP_printk(
"mr=%p state=%s: %s (%u/0x%x)",
__entry->mr, xprtrdma_show_frwr_state(__entry->state),
rdma_show_wc_status(__entry->status),
__entry->status, __entry->vendor_err
)
);
#define DEFINE_FRWR_DONE_EVENT(name) \
DEFINE_EVENT(xprtrdma_frwr_done, name, \
TP_PROTO( \
const struct ib_wc *wc, \
const struct rpcrdma_frwr *frwr \
), \
TP_ARGS(wc, frwr))
/**
** Call events
**/
DEFINE_RDCH_EVENT(xprtrdma_read_chunk);
DEFINE_WRCH_EVENT(xprtrdma_write_chunk);
DEFINE_WRCH_EVENT(xprtrdma_reply_chunk);
TRACE_DEFINE_ENUM(rpcrdma_noch);
TRACE_DEFINE_ENUM(rpcrdma_readch);
TRACE_DEFINE_ENUM(rpcrdma_areadch);
@ -227,6 +381,8 @@ TRACE_EVENT(xprtrdma_wc_receive,
)
);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_fastreg);
/**
** Reply events
**/

11
net/sunrpc/xprtrdma/frwr_ops.c
View File

@ -286,16 +286,16 @@ __frwr_sendcompletion_flush(struct ib_wc *wc, const char *wr)
static void
frwr_wc_fastreg(struct ib_cq *cq, struct ib_wc *wc)
{
struct rpcrdma_frwr *frwr;
struct ib_cqe *cqe;
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
if (wc->status != IB_WC_SUCCESS) {
cqe = wc->wr_cqe;
frwr = container_of(cqe, struct rpcrdma_frwr, fr_cqe);
frwr->fr_state = FRWR_FLUSHED_FR;
__frwr_sendcompletion_flush(wc, "fastreg");
}
trace_xprtrdma_wc_fastreg(wc, frwr);
}
/**
@ -401,9 +401,6 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
if (unlikely(n != mr->mr_nents))
goto out_mapmr_err;
dprintk("RPC: %s: Using frwr %p to map %u segments (%llu bytes)\n",
__func__, frwr, mr->mr_nents, ibmr->length);
key = (u8)(ibmr->rkey & 0x000000FF);
ib_update_fast_reg_key(ibmr, ++key);

18
net/sunrpc/xprtrdma/rpc_rdma.c
View File

@ -371,11 +371,7 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
if (encode_read_segment(xdr, mr, pos) < 0)
return -EMSGSIZE;
dprintk("RPC: %5u %s: pos %u %u@0x%016llx:0x%08x (%s)\n",
rqst->rq_task->tk_pid, __func__, pos,
mr->mr_length, (unsigned long long)mr->mr_offset,
mr->mr_handle, mr->mr_nents < nsegs ? "more" : "last");
trace_xprtrdma_read_chunk(rqst->rq_task, pos, mr, nsegs);
r_xprt->rx_stats.read_chunk_count++;
nsegs -= mr->mr_nents;
} while (nsegs);
@ -433,11 +429,7 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
if (encode_rdma_segment(xdr, mr) < 0)
return -EMSGSIZE;
dprintk("RPC: %5u %s: %u@0x016%llx:0x%08x (%s)\n",
rqst->rq_task->tk_pid, __func__,
mr->mr_length, (unsigned long long)mr->mr_offset,
mr->mr_handle, mr->mr_nents < nsegs ? "more" : "last");
trace_xprtrdma_write_chunk(rqst->rq_task, mr, nsegs);
r_xprt->rx_stats.write_chunk_count++;
r_xprt->rx_stats.total_rdma_request += seg->mr_len;
nchunks++;
@ -495,11 +487,7 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
if (encode_rdma_segment(xdr, mr) < 0)
return -EMSGSIZE;
dprintk("RPC: %5u %s: %u@0x%016llx:0x%08x (%s)\n",
rqst->rq_task->tk_pid, __func__,
mr->mr_length, (unsigned long long)mr->mr_offset,
mr->mr_handle, mr->mr_nents < nsegs ? "more" : "last");
trace_xprtrdma_reply_chunk(rqst->rq_task, mr, nsegs);
r_xprt->rx_stats.reply_chunk_count++;
r_xprt->rx_stats.total_rdma_request += seg->mr_len;
nchunks++;