/* * procfs-based user access to knfsd statistics * * /proc/net/rpc/nfsd * * Format: * rc * Statistsics for the reply cache * fh

* statistics for filehandle lookup * io

* statistics for IO throughput * th <10%-20%> <20%-30%> ... <90%-100%> <100%> * time (seconds) when nfsd thread usage above thresholds * and number of times that all threads were in use * ra cache-size <10% <20% <30% ... <100% not-found * number of times that read-ahead entry was found that deep in * the cache. * plus generic RPC stats (see net/sunrpc/stats.c) * * Copyright (C) 1995, 1996, 1997 Olaf Kirch */ #include #include #include #include #include "nfsd.h" struct nfsd_stats nfsdstats; struct svc_stat nfsd_svcstats = { .program = &nfsd_program, }; static int nfsd_proc_show(struct seq_file *seq, void *v) { int i; seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n", nfsdstats.rchits, nfsdstats.rcmisses, nfsdstats.rcnocache, nfsdstats.fh_stale, nfsdstats.fh_lookup, nfsdstats.fh_anon, nfsdstats.fh_nocache_dir, nfsdstats.fh_nocache_nondir, nfsdstats.io_read, nfsdstats.io_write); /* thread usage: */ seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt); for (i=0; i<10; i++) { unsigned int jifs = nfsdstats.th_usage[i]; unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ; seq_printf(seq, " %u.%03u", sec, msec); } /* newline and ra-cache */ seq_printf(seq, "\nra %u", nfsdstats.ra_size); for (i=0; i<11; i++) seq_printf(seq, " %u", nfsdstats.ra_depth[i]); seq_putc(seq, '\n'); /* show my rpc info */ svc_seq_show(seq, &nfsd_svcstats); #ifdef CONFIG_NFSD_V4 /* Show count for individual nfsv4 operations */ /* Writing operation numbers 0 1 2 also for maintaining uniformity */ seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1); for (i = 0; i <= LAST_NFS4_OP; i++) seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]); seq_putc(seq, '\n'); #endif return 0; } static int nfsd_proc_open(struct inode *inode, struct file *file) { return single_open(file, nfsd_proc_show, NULL); } static const struct file_operations nfsd_proc_fops = { .open = nfsd_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; void nfsd_stat_init(void) { svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_fops); } void nfsd_stat_shutdown(void) { svc_proc_unregister(&init_net, "nfsd"); } tion>

path: root/drivers/usb/serial/console.c

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