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[/] [or1k_soc_on_altera_embedded_dev_kit/] [tags/] [linux-2.6/] [linux-2.6.24_or32_unified_v2.3/] [net/] [sunrpc/] [stats.c] - Blame information for rev 3

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Line No. Rev Author Line
1 3 xianfeng 
/*
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>
16 
 
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>
25 
 
26 
#define RPCDBG_FACILITY RPCDBG_MISC
27 
 
28 
struct proc_dir_entry   *proc_net_rpc = NULL;
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;
36 
        int             i, j;
37 
 
38 
        seq_printf(seq,
39 
                "net %u %u %u %u\n",
40 
                        statp->netcnt,
41 
                        statp->netudpcnt,
42 
                        statp->nettcpcnt,
43 
                        statp->nettcpconn);
44 
        seq_printf(seq,
45 
                "rpc %u %u %u\n",
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;
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);
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 
 
69 
static const struct file_operations rpc_proc_fops = {
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;
84 
        int             i, j;
85 
 
86 
        seq_printf(seq,
87 
                "net %u %u %u %u\n",
88 
                        statp->netcnt,
89 
                        statp->netudpcnt,
90 
                        statp->nettcpcnt,
91 
                        statp->nettcpconn);
92 
        seq_printf(seq,
93 
                "rpc %u %u %u %u %u\n",
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;
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);
106 
                seq_putc(seq, '\n');
107 
        }
108 
}
109 
 
110 
/**
111 
 * rpc_alloc_iostats - allocate an rpc_iostats structure
112 
 * @clnt: RPC program, version, and xprt
113 
 *
114 
 */
115 
struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
116 
{
117 
        struct rpc_iostats *new;
118 
        new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
119 
        return new;
120 
}
121 
EXPORT_SYMBOL(rpc_alloc_iostats);
122 
 
123 
/**
124 
 * rpc_free_iostats - release an rpc_iostats structure
125 
 * @stats: doomed rpc_iostats structure
126 
 *
127 
 */
128 
void rpc_free_iostats(struct rpc_iostats *stats)
129 
{
130 
        kfree(stats);
131 
}
132 
EXPORT_SYMBOL(rpc_free_iostats);
133 
 
134 
/**
135 
 * rpc_count_iostats - tally up per-task stats
136 
 * @task: completed rpc_task
137 
 *
138 
 * Relies on the caller for serialization.
139 
 */
140 
void rpc_count_iostats(struct rpc_task *task)
141 
{
142 
        struct rpc_rqst *req = task->tk_rqstp;
143 
        struct rpc_iostats *stats = task->tk_client->cl_metrics;
144 
        struct rpc_iostats *op_metrics;
145 
        long rtt, execute, queue;
146 
 
147 
        if (!stats || !req)
148 
                return;
149 
        op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx];
150 
 
151 
        op_metrics->om_ops++;
152 
        op_metrics->om_ntrans += req->rq_ntrans;
153 
        op_metrics->om_timeouts += task->tk_timeouts;
154 
 
155 
        op_metrics->om_bytes_sent += task->tk_bytes_sent;
156 
        op_metrics->om_bytes_recv += req->rq_received;
157 
 
158 
        queue = (long)req->rq_xtime - task->tk_start;
159 
        if (queue < 0)
160 
                queue = -queue;
161 
        op_metrics->om_queue += queue;
162 
 
163 
        rtt = task->tk_rtt;
164 
        if (rtt < 0)
165 
                rtt = -rtt;
166 
        op_metrics->om_rtt += rtt;
167 
 
168 
        execute = (long)jiffies - task->tk_start;
169 
        if (execute < 0)
170 
                execute = -execute;
171 
        op_metrics->om_execute += execute;
172 
}
173 
 
174 
static void _print_name(struct seq_file *seq, unsigned int op,
175 
                        struct rpc_procinfo *procs)
176 
{
177 
        if (procs[op].p_name)
178 
                seq_printf(seq, "\t%12s: ", procs[op].p_name);
179 
        else if (op == 0)
180 
                seq_printf(seq, "\t        NULL: ");
181 
        else
182 
                seq_printf(seq, "\t%12u: ", op);
183 
}
184 
 
185 
#define MILLISECS_PER_JIFFY     (1000 / HZ)
186 
 
187 
void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
188 
{
189 
        struct rpc_iostats *stats = clnt->cl_metrics;
190 
        struct rpc_xprt *xprt = clnt->cl_xprt;
191 
        unsigned int op, maxproc = clnt->cl_maxproc;
192 
 
193 
        if (!stats)
194 
                return;
195 
 
196 
        seq_printf(seq, "\tRPC iostats version: %s  ", RPC_IOSTATS_VERS);
197 
        seq_printf(seq, "p/v: %u/%u (%s)\n",
198 
                        clnt->cl_prog, clnt->cl_vers, clnt->cl_protname);
199 
 
200 
        if (xprt)
201 
                xprt->ops->print_stats(xprt, seq);
202 
 
203 
        seq_printf(seq, "\tper-op statistics\n");
204 
        for (op = 0; op < maxproc; op++) {
205 
                struct rpc_iostats *metrics = &stats[op];
206 
                _print_name(seq, op, clnt->cl_procinfo);
207 
                seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
208 
                                metrics->om_ops,
209 
                                metrics->om_ntrans,
210 
                                metrics->om_timeouts,
211 
                                metrics->om_bytes_sent,
212 
                                metrics->om_bytes_recv,
213 
                                metrics->om_queue * MILLISECS_PER_JIFFY,
214 
                                metrics->om_rtt * MILLISECS_PER_JIFFY,
215 
                                metrics->om_execute * MILLISECS_PER_JIFFY);
216 
        }
217 
}
218 
EXPORT_SYMBOL(rpc_print_iostats);
219 
 
220 
/*
221 
 * Register/unregister RPC proc files
222 
 */
223 
static inline struct proc_dir_entry *
224 
do_register(const char *name, void *data, const struct file_operations *fops)
225 
{
226 
        struct proc_dir_entry *ent;
227 
 
228 
        rpc_proc_init();
229 
        dprintk("RPC:       registering /proc/net/rpc/%s\n", name);
230 
 
231 
        ent = create_proc_entry(name, 0, proc_net_rpc);
232 
        if (ent) {
233 
                ent->proc_fops = fops;
234 
                ent->data = data;
235 
        }
236 
        return ent;
237 
}
238 
 
239 
struct proc_dir_entry *
240 
rpc_proc_register(struct rpc_stat *statp)
241 
{
242 
        return do_register(statp->program->name, statp, &rpc_proc_fops);
243 
}
244 
 
245 
void
246 
rpc_proc_unregister(const char *name)
247 
{
248 
        remove_proc_entry(name, proc_net_rpc);
249 
}
250 
 
251 
struct proc_dir_entry *
252 
svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
253 
{
254 
        return do_register(statp->program->pg_name, statp, fops);
255 
}
256 
 
257 
void
258 
svc_proc_unregister(const char *name)
259 
{
260 
        remove_proc_entry(name, proc_net_rpc);
261 
}
262 
 
263 
void
264 
rpc_proc_init(void)
265 
{
266 
        dprintk("RPC:       registering /proc/net/rpc\n");
267 
        if (!proc_net_rpc) {
268 
                struct proc_dir_entry *ent;
269 
                ent = proc_mkdir("rpc", init_net.proc_net);
270 
                if (ent) {
271 
                        ent->owner = THIS_MODULE;
272 
                        proc_net_rpc = ent;
273 
                }
274 
        }
275 
}
276 
 
277 
void
278 
rpc_proc_exit(void)
279 
{
280 
        dprintk("RPC:       unregistering /proc/net/rpc\n");
281 
        if (proc_net_rpc) {
282 
                proc_net_rpc = NULL;
283 
                remove_proc_entry("rpc", init_net.proc_net);
284 
        }
285 
}
286 
 

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