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svcrdma: Display chunk completion ID when posting a rw_ctxt

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Re-use the post_rw tracepoint (safely) to trace cc_info lifetime
events, including completion IDs.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
2020-04-29 17:25:36 -04:00
parent 17f70f8dd5
commit 6787f0bea2
2 changed files with 24 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
net/sunrpc/xprtrdma/svc_rdma_rw.c
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@@ -145,15 +145,24 @@ static int svc_rdma_rw_ctx_init(struct svcxprt_rdma *rdma,
* demand, and not cached.
*/
struct svc_rdma_chunk_ctxt {
struct rpc_rdma_cid cc_cid;
struct ib_cqe cc_cqe;
struct svcxprt_rdma *cc_rdma;
struct list_head cc_rwctxts;
int cc_sqecount;
};
static void svc_rdma_cc_cid_init(struct svcxprt_rdma *rdma,
struct rpc_rdma_cid *cid)
{
cid->ci_queue_id = rdma->sc_sq_cq->res.id;
cid->ci_completion_id = atomic_inc_return(&rdma->sc_completion_ids);
}
static void svc_rdma_cc_init(struct svcxprt_rdma *rdma,
struct svc_rdma_chunk_ctxt *cc)
{
svc_rdma_cc_cid_init(rdma, &cc->cc_cid);
cc->cc_rdma = rdma;
svc_xprt_get(&rdma->sc_xprt);
@@ -237,7 +246,7 @@ 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);
trace_svcrdma_wc_write(wc, &cc->cc_cid);
atomic_add(cc->cc_sqecount, &rdma->sc_sq_avail);
wake_up(&rdma->sc_send_wait);
@@ -295,7 +304,7 @@ 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);
trace_svcrdma_wc_read(wc, &cc->cc_cid);
atomic_add(cc->cc_sqecount, &rdma->sc_sq_avail);
wake_up(&rdma->sc_send_wait);
@@ -351,6 +360,7 @@ static int svc_rdma_post_chunk_ctxt(struct svc_rdma_chunk_ctxt *cc)
do {
if (atomic_sub_return(cc->cc_sqecount,
&rdma->sc_sq_avail) > 0) {
trace_svcrdma_post_chunk(&cc->cc_cid, cc->cc_sqecount);
ret = ib_post_send(rdma->sc_qp, first_wr, &bad_wr);
if (ret)
break;