leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

xprtrdma: Add trace points in reply decoder path

Browse Source 
This includes decoding Write and Reply chunks, and fixing up inline
payloads.

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 16:31:04 -05:00 committed by Anna Schumaker
parent 58f10ad40d
commit e11b7c9655
2 changed files with 102 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

93
include/trace/events/rpcrdma.h
View File

@ -453,6 +453,99 @@ DEFINE_REPLY_EVENT(xprtrdma_reply_rqst);
DEFINE_REPLY_EVENT(xprtrdma_reply_short);
DEFINE_REPLY_EVENT(xprtrdma_reply_hdr);
TRACE_EVENT(xprtrdma_fixup,
TP_PROTO(
const struct rpc_rqst *rqst,
int len,
int hdrlen
),
TP_ARGS(rqst, len, hdrlen),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(const void *, base)
__field(int, len)
__field(int, hdrlen)
),
TP_fast_assign(
__entry->task_id = rqst->rq_task->tk_pid;
__entry->client_id = rqst->rq_task->tk_client->cl_clid;
__entry->base = rqst->rq_rcv_buf.head[0].iov_base;
__entry->len = len;
__entry->hdrlen = hdrlen;
),
TP_printk("task:%u@%u base=%p len=%d hdrlen=%d",
__entry->task_id, __entry->client_id,
__entry->base, __entry->len, __entry->hdrlen
)
);
TRACE_EVENT(xprtrdma_fixup_pg,
TP_PROTO(
const struct rpc_rqst *rqst,
int pageno,
const void *pos,
int len,
int curlen
),
TP_ARGS(rqst, pageno, pos, len, curlen),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(const void *, pos)
__field(int, pageno)
__field(int, len)
__field(int, curlen)
),
TP_fast_assign(
__entry->task_id = rqst->rq_task->tk_pid;
__entry->client_id = rqst->rq_task->tk_client->cl_clid;
__entry->pos = pos;
__entry->pageno = pageno;
__entry->len = len;
__entry->curlen = curlen;
),
TP_printk("task:%u@%u pageno=%d pos=%p len=%d curlen=%d",
__entry->task_id, __entry->client_id,
__entry->pageno, __entry->pos, __entry->len, __entry->curlen
)
);
TRACE_EVENT(xprtrdma_decode_seg,
TP_PROTO(
u32 handle,
u32 length,
u64 offset
),
TP_ARGS(handle, length, offset),
TP_STRUCT__entry(
__field(u32, handle)
__field(u32, length)
__field(u64, offset)
),
TP_fast_assign(
__entry->handle = handle;
__entry->length = length;
__entry->offset = offset;
),
TP_printk("%u@0x%016llx:0x%08x",
__entry->length, (unsigned long long)__entry->offset,
__entry->handle
)
);
#endif /* _TRACE_RPCRDMA_H */
#include <trace/define_trace.h>

29
net/sunrpc/xprtrdma/rpc_rdma.c
View File

@ -914,8 +914,7 @@ rpcrdma_inline_fixup(struct rpc_rqst *rqst, char *srcp, int copy_len, int pad)
curlen = rqst->rq_rcv_buf.head[0].iov_len;
if (curlen > copy_len)
curlen = copy_len;
dprintk("RPC: %s: srcp 0x%p len %d hdrlen %d\n",
__func__, srcp, copy_len, curlen);
trace_xprtrdma_fixup(rqst, copy_len, curlen);
srcp += curlen;
copy_len -= curlen;
@ -935,9 +934,8 @@ rpcrdma_inline_fixup(struct rpc_rqst *rqst, char *srcp, int copy_len, int pad)
if (curlen > pagelist_len)
curlen = pagelist_len;
dprintk("RPC: %s: page %d"
" srcp 0x%p len %d curlen %d\n",
__func__, i, srcp, copy_len, curlen);
trace_xprtrdma_fixup_pg(rqst, i, srcp,
copy_len, curlen);
destp = kmap_atomic(ppages[i]);
memcpy(destp + page_base, srcp, curlen);
flush_dcache_page(ppages[i]);
@ -1028,26 +1026,19 @@ out_short:
static int decode_rdma_segment(struct xdr_stream *xdr, u32 *length)
{
u32 handle;
u64 offset;
__be32 *p;
p = xdr_inline_decode(xdr, 4 * sizeof(*p));
if (unlikely(!p))
return -EIO;
ifdebug(FACILITY) {
u64 offset;
u32 handle;
handle = be32_to_cpup(p++);
*length = be32_to_cpup(p++);
xdr_decode_hyper(p, &offset);
dprintk("RPC: %s: segment %u@0x%016llx:0x%08x\n",
__func__, *length, (unsigned long long)offset,
handle);
} else {
*length = be32_to_cpup(p + 1);
}
handle = be32_to_cpup(p++);
*length = be32_to_cpup(p++);
xdr_decode_hyper(p, &offset);
trace_xprtrdma_decode_seg(handle, *length, offset);
return 0;
}
@ -1068,8 +1059,6 @@ static int decode_write_chunk(struct xdr_stream *xdr, u32 *length)
*length += seglength;
}
dprintk("RPC: %s: segcount=%u, %u bytes\n",
__func__, be32_to_cpup(p), *length);
return 0;
}