Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 105 insertions, 40 deletions

diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 9aa426e4212..3b11cb1e38f 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -153,63 +153,114 @@ static void o2net_init_nst(struct o2net_send_tracking *nst, u32 msgtype,
 	nst->st_node = node;
 }
 
-static void o2net_set_nst_sock_time(struct o2net_send_tracking *nst)
+static inline void o2net_set_nst_sock_time(struct o2net_send_tracking *nst)
 {
-	do_gettimeofday(&nst->st_sock_time);
+	nst->st_sock_time = ktime_get();
 }
 
-static void o2net_set_nst_send_time(struct o2net_send_tracking *nst)
+static inline void o2net_set_nst_send_time(struct o2net_send_tracking *nst)
 {
-	do_gettimeofday(&nst->st_send_time);
+	nst->st_send_time = ktime_get();
 }
 
-static void o2net_set_nst_status_time(struct o2net_send_tracking *nst)
+static inline void o2net_set_nst_status_time(struct o2net_send_tracking *nst)
 {
-	do_gettimeofday(&nst->st_status_time);
+	nst->st_status_time = ktime_get();
 }
 
-static void o2net_set_nst_sock_container(struct o2net_send_tracking *nst,
-					 struct o2net_sock_container *sc)
+static inline void o2net_set_nst_sock_container(struct o2net_send_tracking *nst,
+						struct o2net_sock_container *sc)
 {
 	nst->st_sc = sc;
 }
 
-static void o2net_set_nst_msg_id(struct o2net_send_tracking *nst, u32 msg_id)
+static inline void o2net_set_nst_msg_id(struct o2net_send_tracking *nst,
+					u32 msg_id)
 {
 	nst->st_id = msg_id;
 }
 
-#else  /* CONFIG_DEBUG_FS */
-
-static inline void o2net_init_nst(struct o2net_send_tracking *nst, u32 msgtype,
-				  u32 msgkey, struct task_struct *task, u8 node)
+static inline void o2net_set_sock_timer(struct o2net_sock_container *sc)
 {
+	sc->sc_tv_timer = ktime_get();
 }
 
-static inline void o2net_set_nst_sock_time(struct o2net_send_tracking *nst)
+static inline void o2net_set_data_ready_time(struct o2net_sock_container *sc)
 {
+	sc->sc_tv_data_ready = ktime_get();
 }
 
-static inline void o2net_set_nst_send_time(struct o2net_send_tracking *nst)
+static inline void o2net_set_advance_start_time(struct o2net_sock_container *sc)
 {
+	sc->sc_tv_advance_start = ktime_get();
 }
 
-static inline void o2net_set_nst_status_time(struct o2net_send_tracking *nst)
+static inline void o2net_set_advance_stop_time(struct o2net_sock_container *sc)
 {
+	sc->sc_tv_advance_stop = ktime_get();
 }
 
-static inline void o2net_set_nst_sock_container(struct o2net_send_tracking *nst,
-						struct o2net_sock_container *sc)
+static inline void o2net_set_func_start_time(struct o2net_sock_container *sc)
 {
+	sc->sc_tv_func_start = ktime_get();
 }
 
-static inline void o2net_set_nst_msg_id(struct o2net_send_tracking *nst,
-					u32 msg_id)
+static inline void o2net_set_func_stop_time(struct o2net_sock_container *sc)
 {
+	sc->sc_tv_func_stop = ktime_get();
 }
 
+static ktime_t o2net_get_func_run_time(struct o2net_sock_container *sc)
+{
+	return ktime_sub(sc->sc_tv_func_stop, sc->sc_tv_func_start);
+}
+#else  /* CONFIG_DEBUG_FS */
+# define o2net_init_nst(a, b, c, d, e)
+# define o2net_set_nst_sock_time(a)
+# define o2net_set_nst_send_time(a)
+# define o2net_set_nst_status_time(a)
+# define o2net_set_nst_sock_container(a, b)
+# define o2net_set_nst_msg_id(a, b)
+# define o2net_set_sock_timer(a)
+# define o2net_set_data_ready_time(a)
+# define o2net_set_advance_start_time(a)
+# define o2net_set_advance_stop_time(a)
+# define o2net_set_func_start_time(a)
+# define o2net_set_func_stop_time(a)
+# define o2net_get_func_run_time(a)		(ktime_t)0
 #endif /* CONFIG_DEBUG_FS */
 
+#ifdef CONFIG_OCFS2_FS_STATS
+static void o2net_update_send_stats(struct o2net_send_tracking *nst,
+				    struct o2net_sock_container *sc)
+{
+	sc->sc_tv_status_total = ktime_add(sc->sc_tv_status_total,
+					   ktime_sub(ktime_get(),
+						     nst->st_status_time));
+	sc->sc_tv_send_total = ktime_add(sc->sc_tv_send_total,
+					 ktime_sub(nst->st_status_time,
+						   nst->st_send_time));
+	sc->sc_tv_acquiry_total = ktime_add(sc->sc_tv_acquiry_total,
+					    ktime_sub(nst->st_send_time,
+						      nst->st_sock_time));
+	sc->sc_send_count++;
+}
+
+static void o2net_update_recv_stats(struct o2net_sock_container *sc)
+{
+	sc->sc_tv_process_total = ktime_add(sc->sc_tv_process_total,
+					    o2net_get_func_run_time(sc));
+	sc->sc_recv_count++;
+}
+
+#else
+
+# define o2net_update_send_stats(a, b)
+
+# define o2net_update_recv_stats(sc)
+
+#endif /* CONFIG_OCFS2_FS_STATS */
+
 static inline int o2net_reconnect_delay(void)
 {
 	return o2nm_single_cluster->cl_reconnect_delay_ms;
@@ -355,6 +406,7 @@ static void sc_kref_release(struct kref *kref)
 		sc->sc_sock = NULL;
 	}
 
+	o2nm_undepend_item(&sc->sc_node->nd_item);
 	o2nm_node_put(sc->sc_node);
 	sc->sc_node = NULL;
 
@@ -376,6 +428,7 @@ static struct o2net_sock_container *sc_alloc(struct o2nm_node *node)
 {
 	struct o2net_sock_container *sc, *ret = NULL;
 	struct page *page = NULL;
+	int status = 0;
 
 	page = alloc_page(GFP_NOFS);
 	sc = kzalloc(sizeof(*sc), GFP_NOFS);
@@ -386,6 +439,13 @@ static struct o2net_sock_container *sc_alloc(struct o2nm_node *node)
 	o2nm_node_get(node);
 	sc->sc_node = node;
 
+	/* pin the node item of the remote node */
+	status = o2nm_depend_item(&node->nd_item);
+	if (status) {
+		mlog_errno(status);
+		o2nm_node_put(node);
+		goto out;
+	}
 	INIT_WORK(&sc->sc_connect_work, o2net_sc_connect_completed);
 	INIT_WORK(&sc->sc_rx_work, o2net_rx_until_empty);
 	INIT_WORK(&sc->sc_shutdown_work, o2net_shutdown_sc);
@@ -546,7 +606,7 @@ static void o2net_data_ready(struct sock *sk, int bytes)
 	if (sk->sk_user_data) {
 		struct o2net_sock_container *sc = sk->sk_user_data;
 		sclog(sc, "data_ready hit\n");
-		do_gettimeofday(&sc->sc_tv_data_ready);
+		o2net_set_data_ready_time(sc);
 		o2net_sc_queue_work(sc, &sc->sc_rx_work);
 		ready = sc->sc_data_ready;
 	} else {
@@ -1070,6 +1130,8 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
 	o2net_set_nst_status_time(&nst);
 	wait_event(nsw.ns_wq, o2net_nsw_completed(nn, &nsw));
 
+	o2net_update_send_stats(&nst, sc);
+
 	/* Note that we avoid overwriting the callers status return
 	 * variable if a system error was reported on the other
 	 * side. Callers beware. */
@@ -1183,13 +1245,15 @@ static int o2net_process_message(struct o2net_sock_container *sc,
 	if (syserr != O2NET_ERR_NONE)
 		goto out_respond;
 
-	do_gettimeofday(&sc->sc_tv_func_start);
+	o2net_set_func_start_time(sc);
 	sc->sc_msg_key = be32_to_cpu(hdr->key);
 	sc->sc_msg_type = be16_to_cpu(hdr->msg_type);
 	handler_status = (nmh->nh_func)(hdr, sizeof(struct o2net_msg) +
 					     be16_to_cpu(hdr->data_len),
 					nmh->nh_func_data, &ret_data);
-	do_gettimeofday(&sc->sc_tv_func_stop);
+	o2net_set_func_stop_time(sc);
+
+	o2net_update_recv_stats(sc);
 
 out_respond:
 	/* this destroys the hdr, so don't use it after this */
@@ -1300,7 +1364,7 @@ static int o2net_advance_rx(struct o2net_sock_container *sc)
 	size_t datalen;
 
 	sclog(sc, "receiving\n");
-	do_gettimeofday(&sc->sc_tv_advance_start);
+	o2net_set_advance_start_time(sc);
 
 	if (unlikely(sc->sc_handshake_ok == 0)) {
 		if(sc->sc_page_off < sizeof(struct o2net_handshake)) {
@@ -1375,7 +1439,7 @@ static int o2net_advance_rx(struct o2net_sock_container *sc)
 
 out:
 	sclog(sc, "ret = %d\n", ret);
-	do_gettimeofday(&sc->sc_tv_advance_stop);
+	o2net_set_advance_stop_time(sc);
 	return ret;
 }
 
@@ -1475,27 +1539,28 @@ static void o2net_idle_timer(unsigned long data)
 {
 	struct o2net_sock_container *sc = (struct o2net_sock_container *)data;
 	struct o2net_node *nn = o2net_nn_from_num(sc->sc_node->nd_num);
-	struct timeval now;
 
-	do_gettimeofday(&now);
+#ifdef CONFIG_DEBUG_FS
+	ktime_t now = ktime_get();
+#endif
 
 	printk(KERN_NOTICE "o2net: connection to " SC_NODEF_FMT " has been idle for %u.%u "
 	     "seconds, shutting it down.\n", SC_NODEF_ARGS(sc),
 		     o2net_idle_timeout() / 1000,
 		     o2net_idle_timeout() % 1000);
-	mlog(ML_NOTICE, "here are some times that might help debug the "
-	     "situation: (tmr %ld.%ld now %ld.%ld dr %ld.%ld adv "
-	     "%ld.%ld:%ld.%ld func (%08x:%u) %ld.%ld:%ld.%ld)\n",
-	     sc->sc_tv_timer.tv_sec, (long) sc->sc_tv_timer.tv_usec,
-	     now.tv_sec, (long) now.tv_usec,
-	     sc->sc_tv_data_ready.tv_sec, (long) sc->sc_tv_data_ready.tv_usec,
-	     sc->sc_tv_advance_start.tv_sec,
-	     (long) sc->sc_tv_advance_start.tv_usec,
-	     sc->sc_tv_advance_stop.tv_sec,
-	     (long) sc->sc_tv_advance_stop.tv_usec,
+
+#ifdef CONFIG_DEBUG_FS
+	mlog(ML_NOTICE, "Here are some times that might help debug the "
+	     "situation: (Timer: %lld, Now %lld, DataReady %lld, Advance %lld-%lld, "
+	     "Key 0x%08x, Func %u, FuncTime %lld-%lld)\n",
+	     (long long)ktime_to_us(sc->sc_tv_timer), (long long)ktime_to_us(now),
+	     (long long)ktime_to_us(sc->sc_tv_data_ready),
+	     (long long)ktime_to_us(sc->sc_tv_advance_start),
+	     (long long)ktime_to_us(sc->sc_tv_advance_stop),
 	     sc->sc_msg_key, sc->sc_msg_type,
-	     sc->sc_tv_func_start.tv_sec, (long) sc->sc_tv_func_start.tv_usec,
-	     sc->sc_tv_func_stop.tv_sec, (long) sc->sc_tv_func_stop.tv_usec);
+	     (long long)ktime_to_us(sc->sc_tv_func_start),
+	     (long long)ktime_to_us(sc->sc_tv_func_stop));
+#endif
 
 	/*
 	 * Initialize the nn_timeout so that the next connection attempt
@@ -1511,7 +1576,7 @@ static void o2net_sc_reset_idle_timer(struct o2net_sock_container *sc)
 	o2net_sc_cancel_delayed_work(sc, &sc->sc_keepalive_work);
 	o2net_sc_queue_delayed_work(sc, &sc->sc_keepalive_work,
 		      msecs_to_jiffies(o2net_keepalive_delay()));
-	do_gettimeofday(&sc->sc_tv_timer);
+	o2net_set_sock_timer(sc);
 	mod_timer(&sc->sc_idle_timeout,
 	       jiffies + msecs_to_jiffies(o2net_idle_timeout()));
 }