2 * linux/net/sunrpc/stats.c
4 * procfs-based user access to generic RPC statistics. The stats files
5 * reside in /proc/net/rpc.
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
12 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
15 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/proc_fs.h>
20 #include <linux/seq_file.h>
21 #include <linux/sunrpc/clnt.h>
22 #include <linux/sunrpc/svcsock.h>
23 #include <linux/sunrpc/metrics.h>
24 #include <net/net_namespace.h>
26 #define RPCDBG_FACILITY RPCDBG_MISC
28 struct proc_dir_entry *proc_net_rpc = NULL;
31 * Get RPC client stats
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;
48 statp->rpcauthrefresh);
50 for (i = 0; i < prog->nrvers; i++) {
51 const struct rpc_version *vers = prog->version[i];
54 seq_printf(seq, "proc%u %u",
55 vers->number, vers->nrprocs);
56 for (j = 0; j < vers->nrprocs; j++)
57 seq_printf(seq, " %u",
58 vers->procs[j].p_count);
64 static int rpc_proc_open(struct inode *inode, struct file *file)
66 return single_open(file, rpc_proc_show, PDE(inode)->data);
69 static const struct file_operations rpc_proc_fops = {
71 .open = rpc_proc_open,
74 .release = single_release,
78 * Get RPC server stats
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;
93 "rpc %u %u %u %u %u\n",
95 statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt,
100 for (i = 0; i < prog->pg_nvers; i++) {
101 if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc))
103 seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
104 for (j = 0; j < vers->vs_nproc; j++, proc++)
105 seq_printf(seq, " %u", proc->pc_count);
109 EXPORT_SYMBOL(svc_seq_show);
112 * rpc_alloc_iostats - allocate an rpc_iostats structure
113 * @clnt: RPC program, version, and xprt
116 struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
118 struct rpc_iostats *new;
119 new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
122 EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
125 * rpc_free_iostats - release an rpc_iostats structure
126 * @stats: doomed rpc_iostats structure
129 void rpc_free_iostats(struct rpc_iostats *stats)
133 EXPORT_SYMBOL_GPL(rpc_free_iostats);
136 * rpc_count_iostats - tally up per-task stats
137 * @task: completed rpc_task
139 * Relies on the caller for serialization.
141 void rpc_count_iostats(struct rpc_task *task)
143 struct rpc_rqst *req = task->tk_rqstp;
144 struct rpc_iostats *stats = task->tk_client->cl_metrics;
145 struct rpc_iostats *op_metrics;
146 long rtt, execute, queue;
150 op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx];
152 op_metrics->om_ops++;
153 op_metrics->om_ntrans += req->rq_ntrans;
154 op_metrics->om_timeouts += task->tk_timeouts;
156 op_metrics->om_bytes_sent += task->tk_bytes_sent;
157 op_metrics->om_bytes_recv += req->rq_received;
159 queue = (long)req->rq_xtime - task->tk_start;
162 op_metrics->om_queue += queue;
167 op_metrics->om_rtt += rtt;
169 execute = (long)jiffies - task->tk_start;
172 op_metrics->om_execute += execute;
175 static void _print_name(struct seq_file *seq, unsigned int op,
176 struct rpc_procinfo *procs)
178 if (procs[op].p_name)
179 seq_printf(seq, "\t%12s: ", procs[op].p_name);
181 seq_printf(seq, "\t NULL: ");
183 seq_printf(seq, "\t%12u: ", op);
186 #define MILLISECS_PER_JIFFY (1000 / HZ)
188 void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
190 struct rpc_iostats *stats = clnt->cl_metrics;
191 struct rpc_xprt *xprt = clnt->cl_xprt;
192 unsigned int op, maxproc = clnt->cl_maxproc;
197 seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS);
198 seq_printf(seq, "p/v: %u/%u (%s)\n",
199 clnt->cl_prog, clnt->cl_vers, clnt->cl_protname);
202 xprt->ops->print_stats(xprt, seq);
204 seq_printf(seq, "\tper-op statistics\n");
205 for (op = 0; op < maxproc; op++) {
206 struct rpc_iostats *metrics = &stats[op];
207 _print_name(seq, op, clnt->cl_procinfo);
208 seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
211 metrics->om_timeouts,
212 metrics->om_bytes_sent,
213 metrics->om_bytes_recv,
214 metrics->om_queue * MILLISECS_PER_JIFFY,
215 metrics->om_rtt * MILLISECS_PER_JIFFY,
216 metrics->om_execute * MILLISECS_PER_JIFFY);
219 EXPORT_SYMBOL_GPL(rpc_print_iostats);
222 * Register/unregister RPC proc files
224 static inline struct proc_dir_entry *
225 do_register(const char *name, void *data, const struct file_operations *fops)
228 dprintk("RPC: registering /proc/net/rpc/%s\n", name);
230 return proc_create_data(name, 0, proc_net_rpc, fops, data);
233 struct proc_dir_entry *
234 rpc_proc_register(struct rpc_stat *statp)
236 return do_register(statp->program->name, statp, &rpc_proc_fops);
238 EXPORT_SYMBOL_GPL(rpc_proc_register);
241 rpc_proc_unregister(const char *name)
243 remove_proc_entry(name, proc_net_rpc);
245 EXPORT_SYMBOL_GPL(rpc_proc_unregister);
247 struct proc_dir_entry *
248 svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
250 return do_register(statp->program->pg_name, statp, fops);
252 EXPORT_SYMBOL(svc_proc_register);
255 svc_proc_unregister(const char *name)
257 remove_proc_entry(name, proc_net_rpc);
259 EXPORT_SYMBOL(svc_proc_unregister);
264 dprintk("RPC: registering /proc/net/rpc\n");
266 struct proc_dir_entry *ent;
267 ent = proc_mkdir("rpc", init_net.proc_net);
269 ent->owner = THIS_MODULE;
278 dprintk("RPC: unregistering /proc/net/rpc\n");
281 remove_proc_entry("rpc", init_net.proc_net);