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xprtrdma: Add trace points to instrument memory invalidation 

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 16:31:12 -05:00 committed by Anna Schumaker
parent e11b7c9655
commit 2937fede11
4 changed files with 57 additions and 16 deletions
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41
include/trace/events/rpcrdma.h
View File

@ -201,6 +201,41 @@ DECLARE_EVENT_CLASS(xprtrdma_frwr_done,
), \
TP_ARGS(wc, frwr))
DECLARE_EVENT_CLASS(xprtrdma_mr,
TP_PROTO(
const struct rpcrdma_mr *mr
),
TP_ARGS(mr),
TP_STRUCT__entry(
__field(const void *, mr)
__field(u32, handle)
__field(u32, length)
__field(u64, offset)
),
TP_fast_assign(
__entry->mr = mr;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
__entry->offset = mr->mr_offset;
),
TP_printk("mr=%p %u@0x%016llx:0x%08x",
__entry->mr, __entry->length,
(unsigned long long)__entry->offset,
__entry->handle
)
);
#define DEFINE_MR_EVENT(name) \
DEFINE_EVENT(xprtrdma_mr, name, \
TP_PROTO( \
const struct rpcrdma_mr *mr \
), \
TP_ARGS(mr))
/**
** Call events
**/
@ -382,6 +417,12 @@ TRACE_EVENT(xprtrdma_wc_receive,
);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_fastreg);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_wake);
DEFINE_MR_EVENT(xprtrdma_localinv);
DEFINE_MR_EVENT(xprtrdma_dma_unmap);
DEFINE_MR_EVENT(xprtrdma_remoteinv);
/**
** Reply events

4
net/sunrpc/xprtrdma/fmr_ops.c
View File

@ -148,6 +148,7 @@ out_release:
pr_err("rpcrdma: FMR reset failed (%d), %p released\n", rc, mr);
r_xprt->rx_stats.mrs_orphaned++;
trace_xprtrdma_dma_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
@ -273,6 +274,7 @@ fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
list_for_each_entry(mr, mrs, mr_list) {
dprintk("RPC: %s: unmapping fmr %p\n",
__func__, &mr->fmr);
trace_xprtrdma_localinv(mr);
list_add_tail(&mr->fmr.fm_mr->list, &unmap_list);
}
r_xprt->rx_stats.local_inv_needed++;
@ -285,8 +287,6 @@ fmr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
*/
while (!list_empty(mrs)) {
mr = rpcrdma_mr_pop(mrs);
dprintk("RPC: %s: DMA unmapping fmr %p\n",
__func__, &mr->fmr);
list_del(&mr->fmr.fm_mr->list);
rpcrdma_mr_unmap_and_put(mr);
}

27
net/sunrpc/xprtrdma/frwr_ops.c
View File

@ -182,9 +182,11 @@ frwr_op_recover_mr(struct rpcrdma_mr *mr)
int rc;
rc = __frwr_mr_reset(ia, mr);
if (state != FRWR_FLUSHED_LI)
if (state != FRWR_FLUSHED_LI) {
trace_xprtrdma_dma_unmap(mr);
ib_dma_unmap_sg(ia->ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
}
if (rc)
goto out_release;
@ -307,16 +309,16 @@ frwr_wc_fastreg(struct ib_cq *cq, struct ib_wc *wc)
static void
frwr_wc_localinv(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_LI;
__frwr_sendcompletion_flush(wc, "localinv");
}
trace_xprtrdma_wc_li(wc, frwr);
}
/**
@ -329,17 +331,17 @@ frwr_wc_localinv(struct ib_cq *cq, struct ib_wc *wc)
static void
frwr_wc_localinv_wake(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 */
cqe = wc->wr_cqe;
frwr = container_of(cqe, struct rpcrdma_frwr, fr_cqe);
if (wc->status != IB_WC_SUCCESS) {
frwr->fr_state = FRWR_FLUSHED_LI;
__frwr_sendcompletion_flush(wc, "localinv");
}
complete(&frwr->fr_linv_done);
trace_xprtrdma_wc_li_wake(wc, frwr);
}
/* Post a REG_MR Work Request to register a memory region
@ -457,6 +459,7 @@ frwr_op_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(&mr->mr_list);
trace_xprtrdma_remoteinv(mr);
mr->frwr.fr_state = FRWR_IS_INVALID;
rpcrdma_mr_unmap_and_put(mr);
break; /* only one invalidated MR per RPC */
@ -492,9 +495,7 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
mr->frwr.fr_state = FRWR_IS_INVALID;
frwr = &mr->frwr;
dprintk("RPC: %s: invalidating frwr %p\n",
__func__, frwr);
trace_xprtrdma_localinv(mr);
frwr->fr_cqe.done = frwr_wc_localinv;
last = &frwr->fr_invwr;
@ -536,8 +537,6 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
unmap:
while (!list_empty(mrs)) {
mr = rpcrdma_mr_pop(mrs);
dprintk("RPC: %s: DMA unmapping frwr %p\n",
__func__, &mr->frwr);
rpcrdma_mr_unmap_and_put(mr);
}
return;

1
net/sunrpc/xprtrdma/verbs.c
View File

@ -1349,6 +1349,7 @@ rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr)
{
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
trace_xprtrdma_dma_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
__rpcrdma_mr_put(&r_xprt->rx_buf, mr);