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rxrpc: Add a tracepoint to follow packets in the Rx buffer

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Add a tracepoint to follow the life of packets that get added to a call's
receive buffer.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2016-09-17 10:49:13 +01:00
parent f3639df2d9
commit 58dc63c998
6 changed files with 73 additions and 1 deletions
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33
include/trace/events/rxrpc.h
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@@ -290,6 +290,39 @@ TRACE_EVENT(rxrpc_tx_ack,
__entry->n_acks)
);
TRACE_EVENT(rxrpc_receive,
TP_PROTO(struct rxrpc_call *call, enum rxrpc_receive_trace why,
rxrpc_serial_t serial, rxrpc_seq_t seq),
TP_ARGS(call, why, serial, seq),
TP_STRUCT__entry(
__field(struct rxrpc_call *, call )
__field(enum rxrpc_receive_trace, why )
__field(rxrpc_serial_t, serial )
__field(rxrpc_seq_t, seq )
__field(rxrpc_seq_t, hard_ack )
__field(rxrpc_seq_t, top )
),
TP_fast_assign(
__entry->call = call;
__entry->why = why;
__entry->serial = serial;
__entry->seq = seq;
__entry->hard_ack = call->rx_hard_ack;
__entry->top = call->rx_top;
),
TP_printk("c=%p %s r=%08x q=%08x w=%08x-%08x",
__entry->call,
rxrpc_receive_traces[__entry->why],
__entry->serial,
__entry->seq,
__entry->hard_ack,
__entry->top)
);
#endif /* _TRACE_RXRPC_H */
/* This part must be outside protection */