Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

 * Fix include order for bison/flex-generated C files, from Ben Hutchings

 * Build fixes and documentation corrections from David Ahern

 * Group parsing support, from Jiri Olsa

 * UI/gtk refactorings and improvements from Namhyung Kim

 * NULL deref fix for perf script, from Namhyung Kim

 * Assorted cleanups from Robert Richter

 * Let O= makes handle relative paths, from Steven Rostedt

 * perf script python fixes, from Feng Tang.

 * Improve 'perf lock' error message when the needed tracepoints
   are not present, from David Ahern.

 * Initial bash completion support, from Frederic Weisbecker

 * Allow building without libelf, from Namhyung Kim.

 * Support DWARF CFI based unwind to have callchains when %bp
   based unwinding is not possible, from Jiri Olsa.

 * Symbol resolution fixes, while fixing support PPC64 files with an .opt ELF
   section was the end goal, several fixes for code that handles all
   architectures and cleanups are included, from Cody Schafer.

 * Add a description for the JIT interface, from Andi Kleen.

 * Assorted fixes for Documentation and build in 32 bit, from Robert Richter

 * Add support for non-tracepoint events in perf script python, from Feng Tang

 * Cache the libtraceevent event_format associated to each evsel early, so that we
   avoid relookups, i.e. calling pevent_find_event repeatedly when processing
   tracepoint events.

   [ This is to reduce the surface contact with libtraceevents and make clear what
     is that the perf tools needs from that lib: so far parsing the common and per
     event fields. ]

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 41 insertions, 36 deletions

diff --git a/net/tipc/port.c b/net/tipc/port.c
index 2ad37a4db37..07c42fba672 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -69,7 +69,7 @@ static u32 port_peerport(struct tipc_port *p_ptr)
 	return msg_destport(&p_ptr->phdr);
 }
 
-/*
+/**
  * tipc_port_peer_msg - verify message was sent by connected port's peer
  *
  * Handles cases where the node's network address has changed from
@@ -191,7 +191,7 @@ void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp)
 			struct sk_buff *b = skb_clone(buf, GFP_ATOMIC);
 
 			if (b == NULL) {
-				warn("Unable to deliver multicast message(s)\n");
+				pr_warn("Unable to deliver multicast message(s)\n");
 				goto exit;
 			}
 			if ((index == 0) && (cnt != 0))
@@ -221,12 +221,12 @@ struct tipc_port *tipc_createport_raw(void *usr_handle,
 
 	p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC);
 	if (!p_ptr) {
-		warn("Port creation failed, no memory\n");
+		pr_warn("Port creation failed, no memory\n");
 		return NULL;
 	}
 	ref = tipc_ref_acquire(p_ptr, &p_ptr->lock);
 	if (!ref) {
-		warn("Port creation failed, reference table exhausted\n");
+		pr_warn("Port creation failed, ref. table exhausted\n");
 		kfree(p_ptr);
 		return NULL;
 	}
@@ -581,67 +581,73 @@ exit:
 	kfree_skb(buf);
 }
 
-static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id)
+static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id)
 {
 	struct publication *publ;
+	int ret;
 
 	if (full_id)
-		tipc_printf(buf, "<%u.%u.%u:%u>:",
-			    tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr),
-			    tipc_node(tipc_own_addr), p_ptr->ref);
+		ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:",
+				    tipc_zone(tipc_own_addr),
+				    tipc_cluster(tipc_own_addr),
+				    tipc_node(tipc_own_addr), p_ptr->ref);
 	else
-		tipc_printf(buf, "%-10u:", p_ptr->ref);
+		ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref);
 
 	if (p_ptr->connected) {
 		u32 dport = port_peerport(p_ptr);
 		u32 destnode = port_peernode(p_ptr);
 
-		tipc_printf(buf, " connected to <%u.%u.%u:%u>",
-			    tipc_zone(destnode), tipc_cluster(destnode),
-			    tipc_node(destnode), dport);
+		ret += tipc_snprintf(buf + ret, len - ret,
+				     " connected to <%u.%u.%u:%u>",
+				     tipc_zone(destnode),
+				     tipc_cluster(destnode),
+				     tipc_node(destnode), dport);
 		if (p_ptr->conn_type != 0)
-			tipc_printf(buf, " via {%u,%u}",
-				    p_ptr->conn_type,
-				    p_ptr->conn_instance);
+			ret += tipc_snprintf(buf + ret, len - ret,
+					     " via {%u,%u}", p_ptr->conn_type,
+					     p_ptr->conn_instance);
 	} else if (p_ptr->published) {
-		tipc_printf(buf, " bound to");
+		ret += tipc_snprintf(buf + ret, len - ret, " bound to");
 		list_for_each_entry(publ, &p_ptr->publications, pport_list) {
 			if (publ->lower == publ->upper)
-				tipc_printf(buf, " {%u,%u}", publ->type,
-					    publ->lower);
+				ret += tipc_snprintf(buf + ret, len - ret,
+						     " {%u,%u}", publ->type,
+						     publ->lower);
 			else
-				tipc_printf(buf, " {%u,%u,%u}", publ->type,
-					    publ->lower, publ->upper);
+				ret += tipc_snprintf(buf + ret, len - ret,
+						     " {%u,%u,%u}", publ->type,
+						     publ->lower, publ->upper);
 		}
 	}
-	tipc_printf(buf, "\n");
+	ret += tipc_snprintf(buf + ret, len - ret, "\n");
+	return ret;
 }
 
-#define MAX_PORT_QUERY 32768
-
 struct sk_buff *tipc_port_get_ports(void)
 {
 	struct sk_buff *buf;
 	struct tlv_desc *rep_tlv;
-	struct print_buf pb;
+	char *pb;
+	int pb_len;
 	struct tipc_port *p_ptr;
-	int str_len;
+	int str_len = 0;
 
-	buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY));
+	buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN));
 	if (!buf)
 		return NULL;
 	rep_tlv = (struct tlv_desc *)buf->data;
+	pb = TLV_DATA(rep_tlv);
+	pb_len = ULTRA_STRING_MAX_LEN;
 
-	tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY);
 	spin_lock_bh(&tipc_port_list_lock);
 	list_for_each_entry(p_ptr, &ports, port_list) {
 		spin_lock_bh(p_ptr->lock);
-		port_print(p_ptr, &pb, 0);
+		str_len += port_print(p_ptr, pb, pb_len, 0);
 		spin_unlock_bh(p_ptr->lock);
 	}
 	spin_unlock_bh(&tipc_port_list_lock);
-	str_len = tipc_printbuf_validate(&pb);
-
+	str_len += 1;	/* for "\0" */
 	skb_put(buf, TLV_SPACE(str_len));
 	TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
 
@@ -906,11 +912,11 @@ int tipc_createport(void *usr_handle,
 
 	up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC);
 	if (!up_ptr) {
-		warn("Port creation failed, no memory\n");
+		pr_warn("Port creation failed, no memory\n");
 		return -ENOMEM;
 	}
-	p_ptr = (struct tipc_port *)tipc_createport_raw(NULL, port_dispatcher,
-						   port_wakeup, importance);
+	p_ptr = tipc_createport_raw(NULL, port_dispatcher, port_wakeup,
+				    importance);
 	if (!p_ptr) {
 		kfree(up_ptr);
 		return -ENOMEM;
@@ -1078,8 +1084,7 @@ int tipc_disconnect_port(struct tipc_port *tp_ptr)
 	if (tp_ptr->connected) {
 		tp_ptr->connected = 0;
 		/* let timer expire on it's own to avoid deadlock! */
-		tipc_nodesub_unsubscribe(
-			&((struct tipc_port *)tp_ptr)->subscription);
+		tipc_nodesub_unsubscribe(&tp_ptr->subscription);
 		res = 0;
 	} else {
 		res = -ENOTCONN;
@@ -1099,7 +1104,7 @@ int tipc_disconnect(u32 ref)
 	p_ptr = tipc_port_lock(ref);
 	if (!p_ptr)
 		return -EINVAL;
-	res = tipc_disconnect_port((struct tipc_port *)p_ptr);
+	res = tipc_disconnect_port(p_ptr);
 	tipc_port_unlock(p_ptr);
 	return res;
 }