1 files changed, 78 insertions, 36 deletions

diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c
index b1bc582b0493..1d3b881e7382 100644
--- a/fs/nfsd/stats.c
+++ b/fs/nfsd/stats.c
@@ -7,16 +7,14 @@
  * Format:
  *	rc <hits> <misses> <nocache>
  *			Statistsics for the reply cache
- *	fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
+ *	fh <stale> <deprecated filehandle cache stats>
  *			statistics for filehandle lookup
  *	io <bytes-read> <bytes-written>
  *			statistics for IO throughput
- *	th <threads> <fullcnt> <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.
+ *	th <threads> <deprecated thread usage histogram stats>
+ *			number of threads
+ *	ra <deprecated ra-cache stats>
+ *
  *	plus generic RPC stats (see net/sunrpc/stats.c)
  *
  * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
@@ -38,31 +36,24 @@ 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);
+	seq_printf(seq, "rc %lld %lld %lld\nfh %lld 0 0 0 0\nio %lld %lld\n",
+		   percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_HITS]),
+		   percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_MISSES]),
+		   percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]),
+		   percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_FH_STALE]),
+		   percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_IO_READ]),
+		   percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_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);
-	}
+	seq_printf(seq, "th %u 0", nfsdstats.th_cnt);
+
+	/* deprecated thread usage histogram stats */
+	for (i = 0; i < 10; i++)
+		seq_puts(seq, " 0.000");
+
+	/* deprecated ra-cache stats */
+	seq_puts(seq, "\nra 0 0 0 0 0 0 0 0 0 0 0 0\n");
 
-	/* 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);
 
@@ -70,8 +61,10 @@ static int nfsd_proc_show(struct seq_file *seq, void *v)
 	/* 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]);
+	for (i = 0; i <= LAST_NFS4_OP; i++) {
+		seq_printf(seq, " %lld",
+			   percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_NFS4_OP(i)]));
+	}
 
 	seq_putc(seq, '\n');
 #endif
@@ -91,14 +84,63 @@ static const struct proc_ops nfsd_proc_ops = {
 	.proc_release	= single_release,
 };
 
-void
-nfsd_stat_init(void)
+int nfsd_percpu_counters_init(struct percpu_counter counters[], int num)
+{
+	int i, err = 0;
+
+	for (i = 0; !err && i < num; i++)
+		err = percpu_counter_init(&counters[i], 0, GFP_KERNEL);
+
+	if (!err)
+		return 0;
+
+	for (; i > 0; i--)
+		percpu_counter_destroy(&counters[i-1]);
+
+	return err;
+}
+
+void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num)
+{
+	int i;
+
+	for (i = 0; i < num; i++)
+		percpu_counter_set(&counters[i], 0);
+}
+
+void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num)
 {
+	int i;
+
+	for (i = 0; i < num; i++)
+		percpu_counter_destroy(&counters[i]);
+}
+
+static int nfsd_stat_counters_init(void)
+{
+	return nfsd_percpu_counters_init(nfsdstats.counter, NFSD_STATS_COUNTERS_NUM);
+}
+
+static void nfsd_stat_counters_destroy(void)
+{
+	nfsd_percpu_counters_destroy(nfsdstats.counter, NFSD_STATS_COUNTERS_NUM);
+}
+
+int nfsd_stat_init(void)
+{
+	int err;
+
+	err = nfsd_stat_counters_init();
+	if (err)
+		return err;
+
 	svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_ops);
+
+	return 0;
 }
 
-void
-nfsd_stat_shutdown(void)
+void nfsd_stat_shutdown(void)
 {
+	nfsd_stat_counters_destroy();
 	svc_proc_unregister(&init_net, "nfsd");
 }