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xprtrdma: Remove fr_state

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Now that both the Send and Receive completions are handled in
process context, it is safe to DMA unmap and return MRs to the
free or recycle lists directly in the completion handlers.

Doing this means rpcrdma_frwr no longer needs to track the state of
each MR, meaning that a VALID or FLUSHED MR can no longer appear on
an xprt's MR free list. Thus there is no longer a need to track the
MR's registration state in rpcrdma_frwr.

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
2019-06-19 10:32:59 -04:00
committed by Anna Schumaker
parent 5809ea4f7c
commit 847568942f
4 changed files with 97 additions and 141 deletions
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19
include/trace/events/rpcrdma.h
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@@ -181,18 +181,6 @@ DECLARE_EVENT_CLASS(xprtrdma_wrch_event,
), \
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,
@@ -203,22 +191,19 @@ DECLARE_EVENT_CLASS(xprtrdma_frwr_done,
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),
"mr=%p: %s (%u/0x%x)",
__entry->mr, rdma_show_wc_status(__entry->status),
__entry->status, __entry->vendor_err
)
);