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- /*
- * linux/net/sunrpc/stats.c
- *
- * procfs-based user access to generic RPC statistics. The stats files
- * reside in /proc/net/rpc.
- *
- * The read routines assume that the buffer passed in is just big enough.
- * If you implement an RPC service that has its own stats routine which
- * appends the generic RPC stats, make sure you don't exceed the PAGE_SIZE
- * limit.
- *
- * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
- */
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/proc_fs.h>
- #include <linux/seq_file.h>
- #include <linux/sunrpc/clnt.h>
- #include <linux/sunrpc/svcsock.h>
- #include <linux/sunrpc/metrics.h>
- #include "netns.h"
- #define RPCDBG_FACILITY RPCDBG_MISC
- /*
- * Get RPC client stats
- */
- static int rpc_proc_show(struct seq_file *seq, void *v) {
- const struct rpc_stat *statp = seq->private;
- const struct rpc_program *prog = statp->program;
- unsigned int i, j;
- seq_printf(seq,
- "net %u %u %u %u\n",
- statp->netcnt,
- statp->netudpcnt,
- statp->nettcpcnt,
- statp->nettcpconn);
- seq_printf(seq,
- "rpc %u %u %u\n",
- statp->rpccnt,
- statp->rpcretrans,
- statp->rpcauthrefresh);
- for (i = 0; i < prog->nrvers; i++) {
- const struct rpc_version *vers = prog->version[i];
- if (!vers)
- continue;
- seq_printf(seq, "proc%u %u",
- vers->number, vers->nrprocs);
- for (j = 0; j < vers->nrprocs; j++)
- seq_printf(seq, " %u",
- vers->procs[j].p_count);
- seq_putc(seq, '\n');
- }
- return 0;
- }
- static int rpc_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, rpc_proc_show, PDE(inode)->data);
- }
- static const struct file_operations rpc_proc_fops = {
- .owner = THIS_MODULE,
- .open = rpc_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- /*
- * Get RPC server stats
- */
- void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) {
- const struct svc_program *prog = statp->program;
- const struct svc_procedure *proc;
- const struct svc_version *vers;
- unsigned int i, j;
- seq_printf(seq,
- "net %u %u %u %u\n",
- statp->netcnt,
- statp->netudpcnt,
- statp->nettcpcnt,
- statp->nettcpconn);
- seq_printf(seq,
- "rpc %u %u %u %u %u\n",
- statp->rpccnt,
- statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt,
- statp->rpcbadfmt,
- statp->rpcbadauth,
- statp->rpcbadclnt);
- for (i = 0; i < prog->pg_nvers; i++) {
- if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc))
- continue;
- seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
- for (j = 0; j < vers->vs_nproc; j++, proc++)
- seq_printf(seq, " %u", proc->pc_count);
- seq_putc(seq, '\n');
- }
- }
- EXPORT_SYMBOL_GPL(svc_seq_show);
- /**
- * rpc_alloc_iostats - allocate an rpc_iostats structure
- * @clnt: RPC program, version, and xprt
- *
- */
- struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
- {
- return kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
- }
- EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
- /**
- * rpc_free_iostats - release an rpc_iostats structure
- * @stats: doomed rpc_iostats structure
- *
- */
- void rpc_free_iostats(struct rpc_iostats *stats)
- {
- kfree(stats);
- }
- EXPORT_SYMBOL_GPL(rpc_free_iostats);
- /**
- * rpc_count_iostats - tally up per-task stats
- * @task: completed rpc_task
- *
- * Relies on the caller for serialization.
- */
- void rpc_count_iostats(struct rpc_task *task)
- {
- struct rpc_rqst *req = task->tk_rqstp;
- struct rpc_iostats *stats;
- struct rpc_iostats *op_metrics;
- ktime_t delta;
- if (!task->tk_client || !task->tk_client->cl_metrics || !req)
- return;
- stats = task->tk_client->cl_metrics;
- op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx];
- op_metrics->om_ops++;
- op_metrics->om_ntrans += req->rq_ntrans;
- op_metrics->om_timeouts += task->tk_timeouts;
- op_metrics->om_bytes_sent += req->rq_xmit_bytes_sent;
- op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd;
- delta = ktime_sub(req->rq_xtime, task->tk_start);
- op_metrics->om_queue = ktime_add(op_metrics->om_queue, delta);
- op_metrics->om_rtt = ktime_add(op_metrics->om_rtt, req->rq_rtt);
- delta = ktime_sub(ktime_get(), task->tk_start);
- op_metrics->om_execute = ktime_add(op_metrics->om_execute, delta);
- }
- static void _print_name(struct seq_file *seq, unsigned int op,
- struct rpc_procinfo *procs)
- {
- if (procs[op].p_name)
- seq_printf(seq, "\t%12s: ", procs[op].p_name);
- else if (op == 0)
- seq_printf(seq, "\t NULL: ");
- else
- seq_printf(seq, "\t%12u: ", op);
- }
- void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
- {
- struct rpc_iostats *stats = clnt->cl_metrics;
- struct rpc_xprt *xprt = clnt->cl_xprt;
- unsigned int op, maxproc = clnt->cl_maxproc;
- if (!stats)
- return;
- seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS);
- seq_printf(seq, "p/v: %u/%u (%s)\n",
- clnt->cl_prog, clnt->cl_vers, clnt->cl_protname);
- if (xprt)
- xprt->ops->print_stats(xprt, seq);
- seq_printf(seq, "\tper-op statistics\n");
- for (op = 0; op < maxproc; op++) {
- struct rpc_iostats *metrics = &stats[op];
- _print_name(seq, op, clnt->cl_procinfo);
- seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
- metrics->om_ops,
- metrics->om_ntrans,
- metrics->om_timeouts,
- metrics->om_bytes_sent,
- metrics->om_bytes_recv,
- ktime_to_ms(metrics->om_queue),
- ktime_to_ms(metrics->om_rtt),
- ktime_to_ms(metrics->om_execute));
- }
- }
- EXPORT_SYMBOL_GPL(rpc_print_iostats);
- /*
- * Register/unregister RPC proc files
- */
- static inline struct proc_dir_entry *
- do_register(const char *name, void *data, const struct file_operations *fops)
- {
- struct sunrpc_net *sn;
- dprintk("RPC: registering /proc/net/rpc/%s\n", name);
- sn = net_generic(&init_net, sunrpc_net_id);
- return proc_create_data(name, 0, sn->proc_net_rpc, fops, data);
- }
- struct proc_dir_entry *
- rpc_proc_register(struct rpc_stat *statp)
- {
- return do_register(statp->program->name, statp, &rpc_proc_fops);
- }
- EXPORT_SYMBOL_GPL(rpc_proc_register);
- void
- rpc_proc_unregister(const char *name)
- {
- struct sunrpc_net *sn;
- sn = net_generic(&init_net, sunrpc_net_id);
- remove_proc_entry(name, sn->proc_net_rpc);
- }
- EXPORT_SYMBOL_GPL(rpc_proc_unregister);
- struct proc_dir_entry *
- svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
- {
- return do_register(statp->program->pg_name, statp, fops);
- }
- EXPORT_SYMBOL_GPL(svc_proc_register);
- void
- svc_proc_unregister(const char *name)
- {
- struct sunrpc_net *sn;
- sn = net_generic(&init_net, sunrpc_net_id);
- remove_proc_entry(name, sn->proc_net_rpc);
- }
- EXPORT_SYMBOL_GPL(svc_proc_unregister);
- int rpc_proc_init(struct net *net)
- {
- struct sunrpc_net *sn;
- dprintk("RPC: registering /proc/net/rpc\n");
- sn = net_generic(net, sunrpc_net_id);
- sn->proc_net_rpc = proc_mkdir("rpc", net->proc_net);
- if (sn->proc_net_rpc == NULL)
- return -ENOMEM;
- return 0;
- }
- void rpc_proc_exit(struct net *net)
- {
- dprintk("RPC: unregistering /proc/net/rpc\n");
- remove_proc_entry("rpc", net->proc_net);
- }
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