kernel-ark/net/sunrpc/stats.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

286 lines
6.5 KiB
C

/*
* 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/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>
#define RPCDBG_FACILITY RPCDBG_MISC
struct proc_dir_entry *proc_net_rpc = NULL;
/*
* 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;
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;
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');
}
}
/**
* rpc_alloc_iostats - allocate an rpc_iostats structure
* @clnt: RPC program, version, and xprt
*
*/
struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
{
struct rpc_iostats *new;
new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
return new;
}
EXPORT_SYMBOL(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(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 = task->tk_client->cl_metrics;
struct rpc_iostats *op_metrics;
long rtt, execute, queue;
if (!stats || !req)
return;
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 += task->tk_bytes_sent;
op_metrics->om_bytes_recv += req->rq_received;
queue = (long)req->rq_xtime - task->tk_start;
if (queue < 0)
queue = -queue;
op_metrics->om_queue += queue;
rtt = task->tk_rtt;
if (rtt < 0)
rtt = -rtt;
op_metrics->om_rtt += rtt;
execute = (long)jiffies - task->tk_start;
if (execute < 0)
execute = -execute;
op_metrics->om_execute += execute;
}
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);
}
#define MILLISECS_PER_JIFFY (1000 / HZ)
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,
metrics->om_queue * MILLISECS_PER_JIFFY,
metrics->om_rtt * MILLISECS_PER_JIFFY,
metrics->om_execute * MILLISECS_PER_JIFFY);
}
}
EXPORT_SYMBOL(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 proc_dir_entry *ent;
rpc_proc_init();
dprintk("RPC: registering /proc/net/rpc/%s\n", name);
ent = create_proc_entry(name, 0, proc_net_rpc);
if (ent) {
ent->proc_fops = fops;
ent->data = data;
}
return ent;
}
struct proc_dir_entry *
rpc_proc_register(struct rpc_stat *statp)
{
return do_register(statp->program->name, statp, &rpc_proc_fops);
}
void
rpc_proc_unregister(const char *name)
{
remove_proc_entry(name, proc_net_rpc);
}
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);
}
void
svc_proc_unregister(const char *name)
{
remove_proc_entry(name, proc_net_rpc);
}
void
rpc_proc_init(void)
{
dprintk("RPC: registering /proc/net/rpc\n");
if (!proc_net_rpc) {
struct proc_dir_entry *ent;
ent = proc_mkdir("rpc", proc_net);
if (ent) {
ent->owner = THIS_MODULE;
proc_net_rpc = ent;
}
}
}
void
rpc_proc_exit(void)
{
dprintk("RPC: unregistering /proc/net/rpc\n");
if (proc_net_rpc) {
proc_net_rpc = NULL;
remove_proc_entry("net/rpc", NULL);
}
}