Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/net/sunrpc/stats.c | |
3 | * | |
4 | * procfs-based user access to generic RPC statistics. The stats files | |
5 | * reside in /proc/net/rpc. | |
6 | * | |
7 | * The read routines assume that the buffer passed in is just big enough. | |
8 | * If you implement an RPC service that has its own stats routine which | |
9 | * appends the generic RPC stats, make sure you don't exceed the PAGE_SIZE | |
10 | * limit. | |
11 | * | |
12 | * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
5a0e3ad6 | 16 | #include <linux/slab.h> |
1da177e4 LT |
17 | |
18 | #include <linux/init.h> | |
19 | #include <linux/kernel.h> | |
1da177e4 LT |
20 | #include <linux/proc_fs.h> |
21 | #include <linux/seq_file.h> | |
22 | #include <linux/sunrpc/clnt.h> | |
23 | #include <linux/sunrpc/svcsock.h> | |
11c556b3 | 24 | #include <linux/sunrpc/metrics.h> |
1da177e4 | 25 | |
4f42d0d5 | 26 | #include "netns.h" |
1da177e4 | 27 | |
4f42d0d5 | 28 | #define RPCDBG_FACILITY RPCDBG_MISC |
1da177e4 LT |
29 | |
30 | /* | |
31 | * Get RPC client stats | |
32 | */ | |
33 | static int rpc_proc_show(struct seq_file *seq, void *v) { | |
34 | const struct rpc_stat *statp = seq->private; | |
35 | const struct rpc_program *prog = statp->program; | |
ea339d46 | 36 | unsigned int i, j; |
1da177e4 LT |
37 | |
38 | seq_printf(seq, | |
49e31cba | 39 | "net %u %u %u %u\n", |
1da177e4 LT |
40 | statp->netcnt, |
41 | statp->netudpcnt, | |
42 | statp->nettcpcnt, | |
43 | statp->nettcpconn); | |
44 | seq_printf(seq, | |
49e31cba | 45 | "rpc %u %u %u\n", |
1da177e4 LT |
46 | statp->rpccnt, |
47 | statp->rpcretrans, | |
48 | statp->rpcauthrefresh); | |
49 | ||
50 | for (i = 0; i < prog->nrvers; i++) { | |
51 | const struct rpc_version *vers = prog->version[i]; | |
52 | if (!vers) | |
53 | continue; | |
49e31cba | 54 | seq_printf(seq, "proc%u %u", |
1da177e4 LT |
55 | vers->number, vers->nrprocs); |
56 | for (j = 0; j < vers->nrprocs; j++) | |
49e31cba | 57 | seq_printf(seq, " %u", |
1da177e4 LT |
58 | vers->procs[j].p_count); |
59 | seq_putc(seq, '\n'); | |
60 | } | |
61 | return 0; | |
62 | } | |
63 | ||
64 | static int rpc_proc_open(struct inode *inode, struct file *file) | |
65 | { | |
66 | return single_open(file, rpc_proc_show, PDE(inode)->data); | |
67 | } | |
68 | ||
da7071d7 | 69 | static const struct file_operations rpc_proc_fops = { |
1da177e4 LT |
70 | .owner = THIS_MODULE, |
71 | .open = rpc_proc_open, | |
72 | .read = seq_read, | |
73 | .llseek = seq_lseek, | |
74 | .release = single_release, | |
75 | }; | |
76 | ||
77 | /* | |
78 | * Get RPC server stats | |
79 | */ | |
80 | void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) { | |
81 | const struct svc_program *prog = statp->program; | |
82 | const struct svc_procedure *proc; | |
83 | const struct svc_version *vers; | |
ea339d46 | 84 | unsigned int i, j; |
1da177e4 LT |
85 | |
86 | seq_printf(seq, | |
49e31cba | 87 | "net %u %u %u %u\n", |
1da177e4 LT |
88 | statp->netcnt, |
89 | statp->netudpcnt, | |
90 | statp->nettcpcnt, | |
91 | statp->nettcpconn); | |
92 | seq_printf(seq, | |
49e31cba | 93 | "rpc %u %u %u %u %u\n", |
1da177e4 LT |
94 | statp->rpccnt, |
95 | statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt, | |
96 | statp->rpcbadfmt, | |
97 | statp->rpcbadauth, | |
98 | statp->rpcbadclnt); | |
99 | ||
100 | for (i = 0; i < prog->pg_nvers; i++) { | |
101 | if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc)) | |
102 | continue; | |
49e31cba | 103 | seq_printf(seq, "proc%d %u", i, vers->vs_nproc); |
1da177e4 | 104 | for (j = 0; j < vers->vs_nproc; j++, proc++) |
49e31cba | 105 | seq_printf(seq, " %u", proc->pc_count); |
1da177e4 LT |
106 | seq_putc(seq, '\n'); |
107 | } | |
108 | } | |
24c3767e | 109 | EXPORT_SYMBOL_GPL(svc_seq_show); |
1da177e4 | 110 | |
11c556b3 CL |
111 | /** |
112 | * rpc_alloc_iostats - allocate an rpc_iostats structure | |
113 | * @clnt: RPC program, version, and xprt | |
114 | * | |
115 | */ | |
116 | struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt) | |
117 | { | |
94f58df8 | 118 | return kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL); |
11c556b3 | 119 | } |
e8914c65 | 120 | EXPORT_SYMBOL_GPL(rpc_alloc_iostats); |
11c556b3 CL |
121 | |
122 | /** | |
123 | * rpc_free_iostats - release an rpc_iostats structure | |
124 | * @stats: doomed rpc_iostats structure | |
125 | * | |
126 | */ | |
127 | void rpc_free_iostats(struct rpc_iostats *stats) | |
128 | { | |
129 | kfree(stats); | |
130 | } | |
e8914c65 | 131 | EXPORT_SYMBOL_GPL(rpc_free_iostats); |
11c556b3 CL |
132 | |
133 | /** | |
134 | * rpc_count_iostats - tally up per-task stats | |
135 | * @task: completed rpc_task | |
136 | * | |
137 | * Relies on the caller for serialization. | |
138 | */ | |
139 | void rpc_count_iostats(struct rpc_task *task) | |
140 | { | |
141 | struct rpc_rqst *req = task->tk_rqstp; | |
55ae1aab | 142 | struct rpc_iostats *stats; |
11c556b3 | 143 | struct rpc_iostats *op_metrics; |
ff839970 | 144 | ktime_t delta; |
11c556b3 | 145 | |
55ae1aab | 146 | if (!task->tk_client || !task->tk_client->cl_metrics || !req) |
11c556b3 | 147 | return; |
55ae1aab RL |
148 | |
149 | stats = task->tk_client->cl_metrics; | |
cc0175c1 | 150 | op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx]; |
11c556b3 CL |
151 | |
152 | op_metrics->om_ops++; | |
153 | op_metrics->om_ntrans += req->rq_ntrans; | |
154 | op_metrics->om_timeouts += task->tk_timeouts; | |
155 | ||
d60dbb20 | 156 | op_metrics->om_bytes_sent += req->rq_xmit_bytes_sent; |
dd2b63d0 | 157 | op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd; |
11c556b3 | 158 | |
ff839970 CL |
159 | delta = ktime_sub(req->rq_xtime, task->tk_start); |
160 | op_metrics->om_queue = ktime_add(op_metrics->om_queue, delta); | |
11c556b3 | 161 | |
d60dbb20 | 162 | op_metrics->om_rtt = ktime_add(op_metrics->om_rtt, req->rq_rtt); |
11c556b3 | 163 | |
ff839970 CL |
164 | delta = ktime_sub(ktime_get(), task->tk_start); |
165 | op_metrics->om_execute = ktime_add(op_metrics->om_execute, delta); | |
11c556b3 CL |
166 | } |
167 | ||
ec535ce1 AB |
168 | static void _print_name(struct seq_file *seq, unsigned int op, |
169 | struct rpc_procinfo *procs) | |
cc0175c1 CL |
170 | { |
171 | if (procs[op].p_name) | |
172 | seq_printf(seq, "\t%12s: ", procs[op].p_name); | |
173 | else if (op == 0) | |
174 | seq_printf(seq, "\t NULL: "); | |
175 | else | |
176 | seq_printf(seq, "\t%12u: ", op); | |
177 | } | |
178 | ||
11c556b3 CL |
179 | void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) |
180 | { | |
181 | struct rpc_iostats *stats = clnt->cl_metrics; | |
182 | struct rpc_xprt *xprt = clnt->cl_xprt; | |
183 | unsigned int op, maxproc = clnt->cl_maxproc; | |
184 | ||
185 | if (!stats) | |
186 | return; | |
187 | ||
188 | seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS); | |
189 | seq_printf(seq, "p/v: %u/%u (%s)\n", | |
190 | clnt->cl_prog, clnt->cl_vers, clnt->cl_protname); | |
191 | ||
192 | if (xprt) | |
193 | xprt->ops->print_stats(xprt, seq); | |
194 | ||
195 | seq_printf(seq, "\tper-op statistics\n"); | |
196 | for (op = 0; op < maxproc; op++) { | |
197 | struct rpc_iostats *metrics = &stats[op]; | |
cc0175c1 | 198 | _print_name(seq, op, clnt->cl_procinfo); |
11c556b3 CL |
199 | seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n", |
200 | metrics->om_ops, | |
201 | metrics->om_ntrans, | |
202 | metrics->om_timeouts, | |
203 | metrics->om_bytes_sent, | |
204 | metrics->om_bytes_recv, | |
ff839970 CL |
205 | ktime_to_ms(metrics->om_queue), |
206 | ktime_to_ms(metrics->om_rtt), | |
207 | ktime_to_ms(metrics->om_execute)); | |
11c556b3 CL |
208 | } |
209 | } | |
e8914c65 | 210 | EXPORT_SYMBOL_GPL(rpc_print_iostats); |
11c556b3 | 211 | |
1da177e4 LT |
212 | /* |
213 | * Register/unregister RPC proc files | |
214 | */ | |
215 | static inline struct proc_dir_entry * | |
99ac48f5 | 216 | do_register(const char *name, void *data, const struct file_operations *fops) |
1da177e4 | 217 | { |
4f42d0d5 | 218 | struct sunrpc_net *sn; |
1da177e4 | 219 | |
4f42d0d5 PE |
220 | dprintk("RPC: registering /proc/net/rpc/%s\n", name); |
221 | sn = net_generic(&init_net, sunrpc_net_id); | |
222 | return proc_create_data(name, 0, sn->proc_net_rpc, fops, data); | |
1da177e4 LT |
223 | } |
224 | ||
225 | struct proc_dir_entry * | |
226 | rpc_proc_register(struct rpc_stat *statp) | |
227 | { | |
228 | return do_register(statp->program->name, statp, &rpc_proc_fops); | |
229 | } | |
e8914c65 | 230 | EXPORT_SYMBOL_GPL(rpc_proc_register); |
1da177e4 LT |
231 | |
232 | void | |
233 | rpc_proc_unregister(const char *name) | |
234 | { | |
4f42d0d5 PE |
235 | struct sunrpc_net *sn; |
236 | ||
237 | sn = net_generic(&init_net, sunrpc_net_id); | |
238 | remove_proc_entry(name, sn->proc_net_rpc); | |
1da177e4 | 239 | } |
e8914c65 | 240 | EXPORT_SYMBOL_GPL(rpc_proc_unregister); |
1da177e4 LT |
241 | |
242 | struct proc_dir_entry * | |
99ac48f5 | 243 | svc_proc_register(struct svc_stat *statp, const struct file_operations *fops) |
1da177e4 LT |
244 | { |
245 | return do_register(statp->program->pg_name, statp, fops); | |
246 | } | |
24c3767e | 247 | EXPORT_SYMBOL_GPL(svc_proc_register); |
1da177e4 LT |
248 | |
249 | void | |
250 | svc_proc_unregister(const char *name) | |
251 | { | |
4f42d0d5 PE |
252 | struct sunrpc_net *sn; |
253 | ||
254 | sn = net_generic(&init_net, sunrpc_net_id); | |
255 | remove_proc_entry(name, sn->proc_net_rpc); | |
1da177e4 | 256 | } |
24c3767e | 257 | EXPORT_SYMBOL_GPL(svc_proc_unregister); |
1da177e4 | 258 | |
4f42d0d5 | 259 | int rpc_proc_init(struct net *net) |
1da177e4 | 260 | { |
4f42d0d5 PE |
261 | struct sunrpc_net *sn; |
262 | ||
46121cf7 | 263 | dprintk("RPC: registering /proc/net/rpc\n"); |
4f42d0d5 PE |
264 | sn = net_generic(net, sunrpc_net_id); |
265 | sn->proc_net_rpc = proc_mkdir("rpc", net->proc_net); | |
266 | if (sn->proc_net_rpc == NULL) | |
267 | return -ENOMEM; | |
268 | ||
269 | return 0; | |
1da177e4 LT |
270 | } |
271 | ||
4f42d0d5 | 272 | void rpc_proc_exit(struct net *net) |
1da177e4 | 273 | { |
46121cf7 | 274 | dprintk("RPC: unregistering /proc/net/rpc\n"); |
4f42d0d5 | 275 | remove_proc_entry("rpc", net->proc_net); |
1da177e4 LT |
276 | } |
277 |