rxrpc: Remove the flags from the rxrpc_skb tracepoint

Remove the flags from the rxrpc_skb tracepoint as we're no longer going to
be using this for the transmission buffers and so marking which are
transmission buffers isn't going to be necessary.

Note that this also remove the rxrpc skb flag that indicates if this is a
transmission buffer and so the count is not updated for the moment.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

include/trace/events/rxrpc.h

@@ -461,14 +461,13 @@ TRACE_EVENT(rxrpc_call,
 
 TRACE_EVENT(rxrpc_skb,
 	    TP_PROTO(struct sk_buff *skb, enum rxrpc_skb_trace op,
-		     int usage, int mod_count, u8 flags,    const void *where),
+		     int usage, int mod_count, const void *where),
 
-	    TP_ARGS(skb, op, usage, mod_count, flags, where),
+	    TP_ARGS(skb, op, usage, mod_count, where),
 
 	    TP_STRUCT__entry(
 		    __field(struct sk_buff *,		skb		)
 		    __field(enum rxrpc_skb_trace,	op		)
-		    __field(u8,				flags		)
 		    __field(int,			usage		)
 		    __field(int,			mod_count	)
 		    __field(const void *,		where		)
@@ -476,16 +475,14 @@ TRACE_EVENT(rxrpc_skb,
 
 	    TP_fast_assign(
 		    __entry->skb = skb;
-		    __entry->flags = flags;
 		    __entry->op = op;
 		    __entry->usage = usage;
 		    __entry->mod_count = mod_count;
 		    __entry->where = where;
 			   ),
 
-	    TP_printk("s=%p %cx %s u=%d m=%d p=%pSR",
+	    TP_printk("s=%p Rx %s u=%d m=%d p=%pSR",
 		      __entry->skb,
-		      __entry->flags & RXRPC_SKB_TX_BUFFER ? 'T' : 'R',
 		      __print_symbolic(__entry->op, rxrpc_skb_traces),
 		      __entry->usage,
 		      __entry->mod_count,

net/rxrpc/ar-internal.h

@@ -198,7 +198,6 @@ struct rxrpc_skb_priv {
 	u8		nr_subpackets;		/* Number of subpackets */
 	u8		rx_flags;		/* Received packet flags */
 #define RXRPC_SKB_INCL_LAST	0x01		/* - Includes last packet */
-#define RXRPC_SKB_TX_BUFFER	0x02		/* - Is transmit buffer */
 	union {
 		int		remain;		/* amount of space remaining for next write */
 

net/rxrpc/sendmsg.c

@@ -363,7 +363,6 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
 				goto maybe_error;
 
 			sp = rxrpc_skb(skb);
-			sp->rx_flags |= RXRPC_SKB_TX_BUFFER;
 			rxrpc_new_skb(skb, rxrpc_skb_new);
 
 			_debug("ALLOC SEND %p", skb);

net/rxrpc/skbuff.c

@@ -14,8 +14,7 @@
 #include <net/af_rxrpc.h>
 #include "ar-internal.h"
 
-#define is_tx_skb(skb) (rxrpc_skb(skb)->rx_flags & RXRPC_SKB_TX_BUFFER)
-#define select_skb_count(skb) (is_tx_skb(skb) ? &rxrpc_n_tx_skbs : &rxrpc_n_rx_skbs)
+#define select_skb_count(skb) (&rxrpc_n_rx_skbs)
 
 /*
  * Note the allocation or reception of a socket buffer.
@@ -24,8 +23,7 @@ void rxrpc_new_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
 {
 	const void *here = __builtin_return_address(0);
 	int n = atomic_inc_return(select_skb_count(skb));
-	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
-			rxrpc_skb(skb)->rx_flags, here);
+	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
 }
 
 /*
@@ -36,8 +34,7 @@ void rxrpc_see_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
 	const void *here = __builtin_return_address(0);
 	if (skb) {
 		int n = atomic_read(select_skb_count(skb));
-		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
-				rxrpc_skb(skb)->rx_flags, here);
+		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
 	}
 }
 
@@ -48,8 +45,7 @@ void rxrpc_get_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
 {
 	const void *here = __builtin_return_address(0);
 	int n = atomic_inc_return(select_skb_count(skb));
-	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
-			rxrpc_skb(skb)->rx_flags, here);
+	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
 	skb_get(skb);
 }
 
@@ -60,7 +56,7 @@ void rxrpc_eaten_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
 {
 	const void *here = __builtin_return_address(0);
 	int n = atomic_inc_return(&rxrpc_n_rx_skbs);
-	trace_rxrpc_skb(skb, op, 0, n, 0, here);
+	trace_rxrpc_skb(skb, op, 0, n, here);
 }
 
 /*
@@ -72,8 +68,7 @@ void rxrpc_free_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
 	if (skb) {
 		int n;
 		n = atomic_dec_return(select_skb_count(skb));
-		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
-				rxrpc_skb(skb)->rx_flags, here);
+		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
 		kfree_skb(skb);
 	}
 }
@@ -88,8 +83,7 @@ void rxrpc_purge_queue(struct sk_buff_head *list)
 	while ((skb = skb_dequeue((list))) != NULL) {
 		int n = atomic_dec_return(select_skb_count(skb));
 		trace_rxrpc_skb(skb, rxrpc_skb_purged,
-				refcount_read(&skb->users), n,
-				rxrpc_skb(skb)->rx_flags, here);
+				refcount_read(&skb->users), n, here);
 		kfree_skb(skb);
 	}
 }