forked from Minki/linux
ocfs2/cluster: Show o2net timing statistics
Adds debugfs dentry o2net/stats to show the o2net timing statistics. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Sunil Mushran
Joel Becker
parent
e453039f8b
commit
db02754c8a
@ -46,10 +46,15 @@
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#define O2NET_DEBUG_DIR "o2net"
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#define SC_DEBUG_NAME "sock_containers"
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#define NST_DEBUG_NAME "send_tracking"
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#define STATS_DEBUG_NAME "stats"
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#define SHOW_SOCK_CONTAINERS 0
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#define SHOW_SOCK_STATS 1
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static struct dentry *o2net_dentry;
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static struct dentry *sc_dentry;
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static struct dentry *nst_dentry;
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static struct dentry *stats_dentry;
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static DEFINE_SPINLOCK(o2net_debug_lock);
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@ -232,6 +237,11 @@ void o2net_debug_del_sc(struct o2net_sock_container *sc)
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spin_unlock(&o2net_debug_lock);
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}
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struct o2net_sock_debug {
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int dbg_ctxt;
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struct o2net_sock_container *dbg_sock;
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};
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static struct o2net_sock_container
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*next_sc(struct o2net_sock_container *sc_start)
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{
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@ -257,7 +267,8 @@ static struct o2net_sock_container
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static void *sc_seq_start(struct seq_file *seq, loff_t *pos)
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{
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struct o2net_sock_container *sc, *dummy_sc = seq->private;
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struct o2net_sock_debug *sd = seq->private;
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struct o2net_sock_container *sc, *dummy_sc = sd->dbg_sock;
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spin_lock(&o2net_debug_lock);
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sc = next_sc(dummy_sc);
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@ -268,7 +279,8 @@ static void *sc_seq_start(struct seq_file *seq, loff_t *pos)
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static void *sc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct o2net_sock_container *sc, *dummy_sc = seq->private;
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struct o2net_sock_debug *sd = seq->private;
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struct o2net_sock_container *sc, *dummy_sc = sd->dbg_sock;
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spin_lock(&o2net_debug_lock);
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sc = next_sc(dummy_sc);
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@ -280,63 +292,107 @@ static void *sc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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return sc; /* unused, just needs to be null when done */
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}
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#ifdef CONFIG_OCFS2_FS_STATS
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# define sc_send_count(_s) ((_s)->sc_send_count)
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# define sc_recv_count(_s) ((_s)->sc_recv_count)
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# define sc_tv_acquiry_total_ns(_s) (ktime_to_ns((_s)->sc_tv_acquiry_total))
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# define sc_tv_send_total_ns(_s) (ktime_to_ns((_s)->sc_tv_send_total))
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# define sc_tv_status_total_ns(_s) (ktime_to_ns((_s)->sc_tv_status_total))
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# define sc_tv_process_total_ns(_s) (ktime_to_ns((_s)->sc_tv_process_total))
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#else
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# define sc_send_count(_s) (0U)
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# define sc_recv_count(_s) (0U)
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# define sc_tv_acquiry_total_ns(_s) (0LL)
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# define sc_tv_send_total_ns(_s) (0LL)
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# define sc_tv_status_total_ns(_s) (0LL)
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# define sc_tv_process_total_ns(_s) (0LL)
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#endif
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/* So that debugfs.ocfs2 can determine which format is being used */
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#define O2NET_STATS_STR_VERSION 1
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static void sc_show_sock_stats(struct seq_file *seq,
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struct o2net_sock_container *sc)
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{
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if (!sc)
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return;
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seq_printf(seq, "%d,%u,%lu,%lld,%lld,%lld,%lu,%lld\n", O2NET_STATS_STR_VERSION,
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sc->sc_node->nd_num, (unsigned long)sc_send_count(sc),
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(long long)sc_tv_acquiry_total_ns(sc),
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(long long)sc_tv_send_total_ns(sc),
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(long long)sc_tv_status_total_ns(sc),
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(unsigned long)sc_recv_count(sc),
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(long long)sc_tv_process_total_ns(sc));
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}
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static void sc_show_sock_container(struct seq_file *seq,
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struct o2net_sock_container *sc)
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{
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struct inet_sock *inet = NULL;
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__be32 saddr = 0, daddr = 0;
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__be16 sport = 0, dport = 0;
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if (!sc)
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return;
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if (sc->sc_sock) {
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inet = inet_sk(sc->sc_sock->sk);
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/* the stack's structs aren't sparse endian clean */
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saddr = (__force __be32)inet->inet_saddr;
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daddr = (__force __be32)inet->inet_daddr;
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sport = (__force __be16)inet->inet_sport;
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dport = (__force __be16)inet->inet_dport;
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}
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/* XXX sigh, inet-> doesn't have sparse annotation so any
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* use of it here generates a warning with -Wbitwise */
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seq_printf(seq, "%p:\n"
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" krefs: %d\n"
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" sock: %pI4:%u -> "
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"%pI4:%u\n"
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" remote node: %s\n"
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" page off: %zu\n"
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" handshake ok: %u\n"
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" timer: %lld usecs\n"
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" data ready: %lld usecs\n"
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" advance start: %lld usecs\n"
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" advance stop: %lld usecs\n"
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" func start: %lld usecs\n"
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" func stop: %lld usecs\n"
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" func key: 0x%08x\n"
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" func type: %u\n",
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sc,
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atomic_read(&sc->sc_kref.refcount),
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&saddr, inet ? ntohs(sport) : 0,
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&daddr, inet ? ntohs(dport) : 0,
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sc->sc_node->nd_name,
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sc->sc_page_off,
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sc->sc_handshake_ok,
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(long long)ktime_to_us(sc->sc_tv_timer),
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(long long)ktime_to_us(sc->sc_tv_data_ready),
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(long long)ktime_to_us(sc->sc_tv_advance_start),
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(long long)ktime_to_us(sc->sc_tv_advance_stop),
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(long long)ktime_to_us(sc->sc_tv_func_start),
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(long long)ktime_to_us(sc->sc_tv_func_stop),
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sc->sc_msg_key,
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sc->sc_msg_type);
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}
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static int sc_seq_show(struct seq_file *seq, void *v)
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{
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struct o2net_sock_container *sc, *dummy_sc = seq->private;
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struct o2net_sock_debug *sd = seq->private;
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struct o2net_sock_container *sc, *dummy_sc = sd->dbg_sock;
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spin_lock(&o2net_debug_lock);
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sc = next_sc(dummy_sc);
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if (sc != NULL) {
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struct inet_sock *inet = NULL;
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__be32 saddr = 0, daddr = 0;
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__be16 sport = 0, dport = 0;
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if (sc->sc_sock) {
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inet = inet_sk(sc->sc_sock->sk);
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/* the stack's structs aren't sparse endian clean */
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saddr = (__force __be32)inet->inet_saddr;
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daddr = (__force __be32)inet->inet_daddr;
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sport = (__force __be16)inet->inet_sport;
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dport = (__force __be16)inet->inet_dport;
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}
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/* XXX sigh, inet-> doesn't have sparse annotation so any
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* use of it here generates a warning with -Wbitwise */
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seq_printf(seq, "%p:\n"
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" krefs: %d\n"
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" sock: %pI4:%u -> "
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"%pI4:%u\n"
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" remote node: %s\n"
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" page off: %zu\n"
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" handshake ok: %u\n"
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" timer: %lld usecs\n"
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" data ready: %lld usecs\n"
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" advance start: %lld usecs\n"
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" advance stop: %lld usecs\n"
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" func start: %lld usecs\n"
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" func stop: %lld usecs\n"
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" func key: 0x%08x\n"
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" func type: %u\n",
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sc,
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atomic_read(&sc->sc_kref.refcount),
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&saddr, inet ? ntohs(sport) : 0,
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&daddr, inet ? ntohs(dport) : 0,
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sc->sc_node->nd_name,
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sc->sc_page_off,
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sc->sc_handshake_ok,
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(long long)ktime_to_us(sc->sc_tv_timer),
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(long long)ktime_to_us(sc->sc_tv_data_ready),
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(long long)ktime_to_us(sc->sc_tv_advance_start),
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(long long)ktime_to_us(sc->sc_tv_advance_stop),
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(long long)ktime_to_us(sc->sc_tv_func_start),
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(long long)ktime_to_us(sc->sc_tv_func_stop),
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sc->sc_msg_key,
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sc->sc_msg_type);
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if (sc) {
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if (sd->dbg_ctxt == SHOW_SOCK_CONTAINERS)
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sc_show_sock_container(seq, sc);
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else
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sc_show_sock_stats(seq, sc);
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}
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spin_unlock(&o2net_debug_lock);
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return 0;
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@ -353,7 +409,7 @@ static const struct seq_operations sc_seq_ops = {
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.show = sc_seq_show,
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};
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static int sc_fop_open(struct inode *inode, struct file *file)
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static int sc_common_open(struct file *file, struct o2net_sock_debug *sd)
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{
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struct o2net_sock_container *dummy_sc;
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struct seq_file *seq;
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@ -371,7 +427,8 @@ static int sc_fop_open(struct inode *inode, struct file *file)
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goto out;
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seq = file->private_data;
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seq->private = dummy_sc;
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seq->private = sd;
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sd->dbg_sock = dummy_sc;
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o2net_debug_add_sc(dummy_sc);
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dummy_sc = NULL;
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@ -384,12 +441,48 @@ out:
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static int sc_fop_release(struct inode *inode, struct file *file)
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{
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struct seq_file *seq = file->private_data;
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struct o2net_sock_container *dummy_sc = seq->private;
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struct o2net_sock_debug *sd = seq->private;
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struct o2net_sock_container *dummy_sc = sd->dbg_sock;
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o2net_debug_del_sc(dummy_sc);
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return seq_release_private(inode, file);
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}
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static int stats_fop_open(struct inode *inode, struct file *file)
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{
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struct o2net_sock_debug *sd;
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sd = kmalloc(sizeof(struct o2net_sock_debug), GFP_KERNEL);
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if (sd == NULL)
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return -ENOMEM;
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sd->dbg_ctxt = SHOW_SOCK_STATS;
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sd->dbg_sock = NULL;
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return sc_common_open(file, sd);
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}
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static const struct file_operations stats_seq_fops = {
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.open = stats_fop_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = sc_fop_release,
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};
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static int sc_fop_open(struct inode *inode, struct file *file)
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{
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struct o2net_sock_debug *sd;
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sd = kmalloc(sizeof(struct o2net_sock_debug), GFP_KERNEL);
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if (sd == NULL)
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return -ENOMEM;
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sd->dbg_ctxt = SHOW_SOCK_CONTAINERS;
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sd->dbg_sock = NULL;
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return sc_common_open(file, sd);
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}
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static const struct file_operations sc_seq_fops = {
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.open = sc_fop_open,
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.read = seq_read,
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@ -421,8 +514,17 @@ int o2net_debugfs_init(void)
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goto bail;
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}
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stats_dentry = debugfs_create_file(STATS_DEBUG_NAME, S_IFREG|S_IRUSR,
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o2net_dentry, NULL,
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&stats_seq_fops);
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if (!stats_dentry) {
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mlog_errno(-ENOMEM);
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goto bail;
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}
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return 0;
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bail:
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debugfs_remove(stats_dentry);
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debugfs_remove(sc_dentry);
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debugfs_remove(nst_dentry);
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debugfs_remove(o2net_dentry);
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@ -431,6 +533,7 @@ bail:
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void o2net_debugfs_exit(void)
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{
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debugfs_remove(stats_dentry);
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debugfs_remove(sc_dentry);
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debugfs_remove(nst_dentry);
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debugfs_remove(o2net_dentry);
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