| | 1 | // SPDX-License-Identifier: GPL-2.0 |
| | 2 | /* |
| | 3 | * procfs-based user access to knfsd statistics |
| | 4 | * |
| | 5 | * /proc/net/rpc/nfsd |
| | 6 | * |
| | 7 | * Format: |
| | 8 | * rc <hits> <misses> <nocache> |
| | 9 | * Statistsics for the reply cache |
| | 10 | * fh <stale> <deprecated filehandle cache stats> |
| | 11 | * statistics for filehandle lookup |
| | 12 | * io <bytes-read> <bytes-written> |
| | 13 | * statistics for IO throughput |
| | 14 | * th <threads> <deprecated thread usage histogram stats> |
| | 15 | * number of threads |
| | 16 | * ra <deprecated ra-cache stats> |
| | 17 | * |
| | 18 | * plus generic RPC stats (see net/sunrpc/stats.c) |
| | 19 | * |
| | 20 | * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> |
| | 21 | */ |
| | 22 | |
| | 23 | #include <linux/seq_file.h> |
| | 24 | #include <linux/module.h> |
| | 25 | #include <linux/sunrpc/stats.h> |
| | 26 | #include <net/net_namespace.h> |
| | 27 | |
| | 28 | #include "nfsd.h" |
| | 29 | |
| | 30 | static int nfsd_show(struct seq_file *seq, void *v) |
| | 31 | { |
| | 32 | struct net *net = pde_data(file_inode(seq->file)); |
| | 33 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
| | 34 | int i; |
| | 35 | |
| | 36 | seq_printf(seq, "rc %lld %lld %lld\nfh %lld 0 0 0 0\nio %lld %lld\n", |
| | 37 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_HITS]), |
| | 38 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_MISSES]), |
| | 39 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_NOCACHE]), |
| | 40 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_FH_STALE]), |
| | 41 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_READ]), |
| | 42 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_WRITE])); |
| | 43 | |
| | 44 | /* thread usage: */ |
| | 45 | seq_printf(seq, "th %u 0", atomic_read(&nfsd_th_cnt)); |
| | 46 | |
| | 47 | /* deprecated thread usage histogram stats */ |
| | 48 | for (i = 0; i < 10; i++) |
| | 49 | seq_puts(seq, " 0.000"); |
| | 50 | |
| | 51 | /* deprecated ra-cache stats */ |
| | 52 | seq_puts(seq, "\nra 0 0 0 0 0 0 0 0 0 0 0 0\n"); |
| | 53 | |
| | 54 | /* show my rpc info */ |
| | 55 | svc_seq_show(seq, &nn->nfsd_svcstats); |
| | 56 | |
| | 57 | #ifdef CONFIG_NFSD_V4 |
| | 58 | /* Show count for individual nfsv4 operations */ |
| | 59 | /* Writing operation numbers 0 1 2 also for maintaining uniformity */ |
| | 60 | seq_printf(seq, "proc4ops %u", LAST_NFS4_OP + 1); |
| | 61 | for (i = 0; i <= LAST_NFS4_OP; i++) { |
| | 62 | seq_printf(seq, " %lld", |
| | 63 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_NFS4_OP(i)])); |
| | 64 | } |
| | 65 | seq_printf(seq, "\nwdeleg_getattr %lld", |
| | 66 | percpu_counter_sum_positive(&nn->counter[NFSD_STATS_WDELEG_GETATTR])); |
| | 67 | |
| | 68 | seq_putc(seq, '\n'); |
| | 69 | #endif |
| | 70 | |
| | 71 | return 0; |
| | 72 | } |
| | 73 | |
| | 74 | DEFINE_PROC_SHOW_ATTRIBUTE(nfsd); |
| | 75 | |
| | 76 | void nfsd_proc_stat_init(struct net *net) |
| | 77 | { |
| | 78 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
| | 79 | |
| | 80 | svc_proc_register(net, &nn->nfsd_svcstats, &nfsd_proc_ops); |
| | 81 | } |
| | 82 | |
| | 83 | void nfsd_proc_stat_shutdown(struct net *net) |
| | 84 | { |
| | 85 | svc_proc_unregister(net, "nfsd"); |
| | 86 | } |
projects / linux-2.6-block.git / blame_incremental