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svcrdma: Trace key RDMA API events

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This includes:
  * Posting on the Send and Receive queues
  * Send, Receive, Read, and Write completion
  * Connect upcalls
  * QP errors

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Chuck Lever
2018-05-07 15:27:16 -04:00
committed by J. Bruce Fields
parent 98895edbe3
commit bd2abef333
11 changed files with 372 additions and 51 deletions
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14
net/sunrpc/xprtrdma/svc_rdma_rw.c
View File

@@ -208,6 +208,8 @@ static void svc_rdma_write_done(struct ib_cq *cq, struct ib_wc *wc)
struct svc_rdma_write_info *info =
container_of(cc, struct svc_rdma_write_info, wi_cc);
trace_svcrdma_wc_write(wc);
atomic_add(cc->cc_sqecount, &rdma->sc_sq_avail);
wake_up(&rdma->sc_send_wait);
@@ -269,6 +271,8 @@ static void svc_rdma_wc_read_done(struct ib_cq *cq, struct ib_wc *wc)
struct svc_rdma_read_info *info =
container_of(cc, struct svc_rdma_read_info, ri_cc);
trace_svcrdma_wc_read(wc);
atomic_add(cc->cc_sqecount, &rdma->sc_sq_avail);
wake_up(&rdma->sc_send_wait);
@@ -326,18 +330,20 @@ static int svc_rdma_post_chunk_ctxt(struct svc_rdma_chunk_ctxt *cc)
if (atomic_sub_return(cc->cc_sqecount,
&rdma->sc_sq_avail) > 0) {
ret = ib_post_send(rdma->sc_qp, first_wr, &bad_wr);
trace_svcrdma_post_rw(&cc->cc_cqe,
cc->cc_sqecount, ret);
if (ret)
break;
return 0;
}
atomic_inc(&rdma_stat_sq_starve);
trace_svcrdma_sq_full(rdma);
atomic_add(cc->cc_sqecount, &rdma->sc_sq_avail);
wait_event(rdma->sc_send_wait,
atomic_read(&rdma->sc_sq_avail) > cc->cc_sqecount);
trace_svcrdma_sq_retry(rdma);
} while (1);
pr_err("svcrdma: ib_post_send failed (%d)\n", ret);
set_bit(XPT_CLOSE, &xprt->xpt_flags);
/* If even one was posted, there will be a completion. */
@@ -466,7 +472,7 @@ out_noctx:
out_initerr:
svc_rdma_put_rw_ctxt(rdma, ctxt);
pr_err("svcrdma: failed to map pagelist (%d)\n", ret);
trace_svcrdma_dma_map_rwctx(rdma, ret);
return -EIO;
}
@@ -661,8 +667,8 @@ out_overrun:
return -EINVAL;
out_initerr:
trace_svcrdma_dma_map_rwctx(cc->cc_rdma, ret);
svc_rdma_put_rw_ctxt(cc->cc_rdma, ctxt);
pr_err("svcrdma: failed to map pagelist (%d)\n", ret);
return -EIO;
}