Commit | Line | Data |
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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> |
457c4cbc | 25 | #include <net/net_namespace.h> |
1da177e4 LT |
26 | |
27 | #define RPCDBG_FACILITY RPCDBG_MISC | |
28 | ||
29 | struct proc_dir_entry *proc_net_rpc = NULL; | |
30 | ||
31 | /* | |
32 | * Get RPC client stats | |
33 | */ | |
34 | static int rpc_proc_show(struct seq_file *seq, void *v) { | |
35 | const struct rpc_stat *statp = seq->private; | |
36 | const struct rpc_program *prog = statp->program; | |
ea339d46 | 37 | unsigned int i, j; |
1da177e4 LT |
38 | |
39 | seq_printf(seq, | |
49e31cba | 40 | "net %u %u %u %u\n", |
1da177e4 LT |
41 | statp->netcnt, |
42 | statp->netudpcnt, | |
43 | statp->nettcpcnt, | |
44 | statp->nettcpconn); | |
45 | seq_printf(seq, | |
49e31cba | 46 | "rpc %u %u %u\n", |
1da177e4 LT |
47 | statp->rpccnt, |
48 | statp->rpcretrans, | |
49 | statp->rpcauthrefresh); | |
50 | ||
51 | for (i = 0; i < prog->nrvers; i++) { | |
52 | const struct rpc_version *vers = prog->version[i]; | |
53 | if (!vers) | |
54 | continue; | |
49e31cba | 55 | seq_printf(seq, "proc%u %u", |
1da177e4 LT |
56 | vers->number, vers->nrprocs); |
57 | for (j = 0; j < vers->nrprocs; j++) | |
49e31cba | 58 | seq_printf(seq, " %u", |
1da177e4 LT |
59 | vers->procs[j].p_count); |
60 | seq_putc(seq, '\n'); | |
61 | } | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static int rpc_proc_open(struct inode *inode, struct file *file) | |
66 | { | |
67 | return single_open(file, rpc_proc_show, PDE(inode)->data); | |
68 | } | |
69 | ||
da7071d7 | 70 | static const struct file_operations rpc_proc_fops = { |
1da177e4 LT |
71 | .owner = THIS_MODULE, |
72 | .open = rpc_proc_open, | |
73 | .read = seq_read, | |
74 | .llseek = seq_lseek, | |
75 | .release = single_release, | |
76 | }; | |
77 | ||
78 | /* | |
79 | * Get RPC server stats | |
80 | */ | |
81 | void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) { | |
82 | const struct svc_program *prog = statp->program; | |
83 | const struct svc_procedure *proc; | |
84 | const struct svc_version *vers; | |
ea339d46 | 85 | unsigned int i, j; |
1da177e4 LT |
86 | |
87 | seq_printf(seq, | |
49e31cba | 88 | "net %u %u %u %u\n", |
1da177e4 LT |
89 | statp->netcnt, |
90 | statp->netudpcnt, | |
91 | statp->nettcpcnt, | |
92 | statp->nettcpconn); | |
93 | seq_printf(seq, | |
49e31cba | 94 | "rpc %u %u %u %u %u\n", |
1da177e4 LT |
95 | statp->rpccnt, |
96 | statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt, | |
97 | statp->rpcbadfmt, | |
98 | statp->rpcbadauth, | |
99 | statp->rpcbadclnt); | |
100 | ||
101 | for (i = 0; i < prog->pg_nvers; i++) { | |
102 | if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc)) | |
103 | continue; | |
49e31cba | 104 | seq_printf(seq, "proc%d %u", i, vers->vs_nproc); |
1da177e4 | 105 | for (j = 0; j < vers->vs_nproc; j++, proc++) |
49e31cba | 106 | seq_printf(seq, " %u", proc->pc_count); |
1da177e4 LT |
107 | seq_putc(seq, '\n'); |
108 | } | |
109 | } | |
24c3767e | 110 | EXPORT_SYMBOL_GPL(svc_seq_show); |
1da177e4 | 111 | |
11c556b3 CL |
112 | /** |
113 | * rpc_alloc_iostats - allocate an rpc_iostats structure | |
114 | * @clnt: RPC program, version, and xprt | |
115 | * | |
116 | */ | |
117 | struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt) | |
118 | { | |
11c556b3 | 119 | struct rpc_iostats *new; |
0da974f4 | 120 | new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL); |
11c556b3 CL |
121 | return new; |
122 | } | |
e8914c65 | 123 | EXPORT_SYMBOL_GPL(rpc_alloc_iostats); |
11c556b3 CL |
124 | |
125 | /** | |
126 | * rpc_free_iostats - release an rpc_iostats structure | |
127 | * @stats: doomed rpc_iostats structure | |
128 | * | |
129 | */ | |
130 | void rpc_free_iostats(struct rpc_iostats *stats) | |
131 | { | |
132 | kfree(stats); | |
133 | } | |
e8914c65 | 134 | EXPORT_SYMBOL_GPL(rpc_free_iostats); |
11c556b3 CL |
135 | |
136 | /** | |
137 | * rpc_count_iostats - tally up per-task stats | |
138 | * @task: completed rpc_task | |
139 | * | |
140 | * Relies on the caller for serialization. | |
141 | */ | |
142 | void rpc_count_iostats(struct rpc_task *task) | |
143 | { | |
144 | struct rpc_rqst *req = task->tk_rqstp; | |
55ae1aab | 145 | struct rpc_iostats *stats; |
11c556b3 CL |
146 | struct rpc_iostats *op_metrics; |
147 | long rtt, execute, queue; | |
148 | ||
55ae1aab | 149 | if (!task->tk_client || !task->tk_client->cl_metrics || !req) |
11c556b3 | 150 | return; |
55ae1aab RL |
151 | |
152 | stats = task->tk_client->cl_metrics; | |
cc0175c1 | 153 | op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx]; |
11c556b3 CL |
154 | |
155 | op_metrics->om_ops++; | |
156 | op_metrics->om_ntrans += req->rq_ntrans; | |
157 | op_metrics->om_timeouts += task->tk_timeouts; | |
158 | ||
159 | op_metrics->om_bytes_sent += task->tk_bytes_sent; | |
dd2b63d0 | 160 | op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd; |
11c556b3 CL |
161 | |
162 | queue = (long)req->rq_xtime - task->tk_start; | |
163 | if (queue < 0) | |
164 | queue = -queue; | |
165 | op_metrics->om_queue += queue; | |
166 | ||
167 | rtt = task->tk_rtt; | |
168 | if (rtt < 0) | |
169 | rtt = -rtt; | |
170 | op_metrics->om_rtt += rtt; | |
171 | ||
172 | execute = (long)jiffies - task->tk_start; | |
173 | if (execute < 0) | |
174 | execute = -execute; | |
175 | op_metrics->om_execute += execute; | |
176 | } | |
177 | ||
ec535ce1 AB |
178 | static void _print_name(struct seq_file *seq, unsigned int op, |
179 | struct rpc_procinfo *procs) | |
cc0175c1 CL |
180 | { |
181 | if (procs[op].p_name) | |
182 | seq_printf(seq, "\t%12s: ", procs[op].p_name); | |
183 | else if (op == 0) | |
184 | seq_printf(seq, "\t NULL: "); | |
185 | else | |
186 | seq_printf(seq, "\t%12u: ", op); | |
187 | } | |
188 | ||
5eb53f41 | 189 | #define MILLISECS_PER_JIFFY (1000 / HZ) |
11c556b3 CL |
190 | |
191 | void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) | |
192 | { | |
193 | struct rpc_iostats *stats = clnt->cl_metrics; | |
194 | struct rpc_xprt *xprt = clnt->cl_xprt; | |
195 | unsigned int op, maxproc = clnt->cl_maxproc; | |
196 | ||
197 | if (!stats) | |
198 | return; | |
199 | ||
200 | seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS); | |
201 | seq_printf(seq, "p/v: %u/%u (%s)\n", | |
202 | clnt->cl_prog, clnt->cl_vers, clnt->cl_protname); | |
203 | ||
204 | if (xprt) | |
205 | xprt->ops->print_stats(xprt, seq); | |
206 | ||
207 | seq_printf(seq, "\tper-op statistics\n"); | |
208 | for (op = 0; op < maxproc; op++) { | |
209 | struct rpc_iostats *metrics = &stats[op]; | |
cc0175c1 | 210 | _print_name(seq, op, clnt->cl_procinfo); |
11c556b3 CL |
211 | seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n", |
212 | metrics->om_ops, | |
213 | metrics->om_ntrans, | |
214 | metrics->om_timeouts, | |
215 | metrics->om_bytes_sent, | |
216 | metrics->om_bytes_recv, | |
217 | metrics->om_queue * MILLISECS_PER_JIFFY, | |
218 | metrics->om_rtt * MILLISECS_PER_JIFFY, | |
219 | metrics->om_execute * MILLISECS_PER_JIFFY); | |
220 | } | |
221 | } | |
e8914c65 | 222 | EXPORT_SYMBOL_GPL(rpc_print_iostats); |
11c556b3 | 223 | |
1da177e4 LT |
224 | /* |
225 | * Register/unregister RPC proc files | |
226 | */ | |
227 | static inline struct proc_dir_entry * | |
99ac48f5 | 228 | do_register(const char *name, void *data, const struct file_operations *fops) |
1da177e4 | 229 | { |
1da177e4 | 230 | rpc_proc_init(); |
46121cf7 | 231 | dprintk("RPC: registering /proc/net/rpc/%s\n", name); |
1da177e4 | 232 | |
e7fe2336 | 233 | return proc_create_data(name, 0, proc_net_rpc, fops, data); |
1da177e4 LT |
234 | } |
235 | ||
236 | struct proc_dir_entry * | |
237 | rpc_proc_register(struct rpc_stat *statp) | |
238 | { | |
239 | return do_register(statp->program->name, statp, &rpc_proc_fops); | |
240 | } | |
e8914c65 | 241 | EXPORT_SYMBOL_GPL(rpc_proc_register); |
1da177e4 LT |
242 | |
243 | void | |
244 | rpc_proc_unregister(const char *name) | |
245 | { | |
246 | remove_proc_entry(name, proc_net_rpc); | |
247 | } | |
e8914c65 | 248 | EXPORT_SYMBOL_GPL(rpc_proc_unregister); |
1da177e4 LT |
249 | |
250 | struct proc_dir_entry * | |
99ac48f5 | 251 | svc_proc_register(struct svc_stat *statp, const struct file_operations *fops) |
1da177e4 LT |
252 | { |
253 | return do_register(statp->program->pg_name, statp, fops); | |
254 | } | |
24c3767e | 255 | EXPORT_SYMBOL_GPL(svc_proc_register); |
1da177e4 LT |
256 | |
257 | void | |
258 | svc_proc_unregister(const char *name) | |
259 | { | |
260 | remove_proc_entry(name, proc_net_rpc); | |
261 | } | |
24c3767e | 262 | EXPORT_SYMBOL_GPL(svc_proc_unregister); |
1da177e4 LT |
263 | |
264 | void | |
265 | rpc_proc_init(void) | |
266 | { | |
46121cf7 | 267 | dprintk("RPC: registering /proc/net/rpc\n"); |
99b76233 AD |
268 | if (!proc_net_rpc) |
269 | proc_net_rpc = proc_mkdir("rpc", init_net.proc_net); | |
1da177e4 LT |
270 | } |
271 | ||
272 | void | |
273 | rpc_proc_exit(void) | |
274 | { | |
46121cf7 | 275 | dprintk("RPC: unregistering /proc/net/rpc\n"); |
1da177e4 LT |
276 | if (proc_net_rpc) { |
277 | proc_net_rpc = NULL; | |
457c4cbc | 278 | remove_proc_entry("rpc", init_net.proc_net); |
1da177e4 LT |
279 | } |
280 | } | |
281 |