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SUNRPC: add a handful of per-xprt counters

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Monitor generic transport events.  Add a transport switch callout to
format transport counters for export to user-land.

Test plan:
Compile kernel with CONFIG_NFS enabled.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
2006-03-20 13:44:16 -05:00
committed by Trond Myklebust
parent e19b63dafd
commit 262ca07de4
4 changed files with 77 additions and 6 deletions
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13
include/linux/sunrpc/xprt.h
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@@ -114,6 +114,7 @@ struct rpc_xprt_ops {
void (*release_request)(struct rpc_task *task);
void (*close)(struct rpc_xprt *xprt);
void (*destroy)(struct rpc_xprt *xprt);
void (*print_stats)(struct rpc_xprt *xprt, struct seq_file *seq);
};
struct rpc_xprt {
@@ -187,6 +188,18 @@ struct rpc_xprt {
struct list_head recv;
struct {
unsigned long bind_count, /* total number of binds */
connect_count, /* total number of connects */
connect_start, /* connect start timestamp */
connect_time, /* jiffies waiting for connect */
sends, /* how many complete requests */
recvs, /* how many complete requests */
bad_xids; /* lookup_rqst didn't find XID */
unsigned long long req_u, /* average requests on the wire */
bklog_u; /* backlog queue utilization */
} stat;
void (*old_data_ready)(struct sock *, int);
void (*old_state_change)(struct sock *);