diff options
| author |   David Howells <dhowells@redhat.com> | 2016-09-17 10:49:13 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2016-09-17 11:24:03 +0100 |
| commit | a124fe3ee5d82f2c9a9b8818ed5cb9f61685f1d3 (patch) | |
| tree | 460767b547c2b0c39388f857783f543a906a2889 /net/rxrpc | |
| parent | rxrpc: Add connection tracepoint and client conn state tracepoint (diff) | |
| download | linux-dev-a124fe3ee5d82f2c9a9b8818ed5cb9f61685f1d3.tar.xz linux-dev-a124fe3ee5d82f2c9a9b8818ed5cb9f61685f1d3.zip | |
rxrpc: Add a tracepoint to follow the life of a packet in the Tx buffer
Add a tracepoint to follow the insertion of a packet into the transmit
buffer, its transmission and its rotation out of the buffer.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc')
| -rw-r--r-- | net/rxrpc/ar-internal.h | 12 | ||||
| -rw-r--r-- | net/rxrpc/input.c | 2 | ||||
| -rw-r--r-- | net/rxrpc/misc.c | 9 | ||||
| -rw-r--r-- | net/rxrpc/sendmsg.c | 9 |
4 files changed, 31 insertions, 1 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index 6ca40eea3022..afa5dcc05fe0 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -593,6 +593,18 @@ enum rxrpc_call_trace { extern const char rxrpc_call_traces[rxrpc_call__nr_trace][4]; +enum rxrpc_transmit_trace { + rxrpc_transmit_wait, + rxrpc_transmit_queue, + rxrpc_transmit_queue_reqack, + rxrpc_transmit_queue_last, + rxrpc_transmit_rotate, + rxrpc_transmit_end, + rxrpc_transmit__nr_trace +}; + +extern const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4]; + extern const char *const rxrpc_pkts[]; extern const char *rxrpc_acks(u8 reason); diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c index c1f83d22f9b7..c7eb5104e91a 100644 --- a/net/rxrpc/input.c +++ b/net/rxrpc/input.c @@ -59,6 +59,7 @@ static void rxrpc_rotate_tx_window(struct rxrpc_call *call, rxrpc_seq_t to) spin_unlock(&call->lock); + trace_rxrpc_transmit(call, rxrpc_transmit_rotate); wake_up(&call->waitq); while (list) { @@ -107,6 +108,7 @@ static bool rxrpc_end_tx_phase(struct rxrpc_call *call, const char *abort_why) } write_unlock(&call->state_lock); + trace_rxrpc_transmit(call, rxrpc_transmit_end); _leave(" = ok"); return true; } diff --git a/net/rxrpc/misc.c b/net/rxrpc/misc.c index 598064d3bdd2..dca89995f03e 100644 --- a/net/rxrpc/misc.c +++ b/net/rxrpc/misc.c @@ -132,3 +132,12 @@ const char rxrpc_client_traces[rxrpc_client__nr_trace][7] = { [rxrpc_client_to_waiting] = "->Wait", [rxrpc_client_uncount] = "Uncoun", }; + +const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4] = { + [rxrpc_transmit_wait] = "WAI", + [rxrpc_transmit_queue] = "QUE", + [rxrpc_transmit_queue_reqack] = "QRA", + [rxrpc_transmit_queue_last] = "QLS", + [rxrpc_transmit_rotate] = "ROT", + [rxrpc_transmit_end] = "END", +}; diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c index 8bfddf4e338c..28d8f73cf11d 100644 --- a/net/rxrpc/sendmsg.c +++ b/net/rxrpc/sendmsg.c @@ -56,6 +56,7 @@ static int rxrpc_wait_for_tx_window(struct rxrpc_sock *rx, break; } + trace_rxrpc_transmit(call, rxrpc_transmit_wait); release_sock(&rx->sk); *timeo = schedule_timeout(*timeo); lock_sock(&rx->sk); @@ -104,8 +105,14 @@ static void rxrpc_queue_packet(struct rxrpc_call *call, struct sk_buff *skb, smp_wmb(); call->rxtx_buffer[ix] = skb; call->tx_top = seq; - if (last) + if (last) { set_bit(RXRPC_CALL_TX_LAST, &call->flags); + trace_rxrpc_transmit(call, rxrpc_transmit_queue_last); + } else if (sp->hdr.flags & RXRPC_REQUEST_ACK) { + trace_rxrpc_transmit(call, rxrpc_transmit_queue_reqack); + } else { + trace_rxrpc_transmit(call, rxrpc_transmit_queue); + } if (last || call->state == RXRPC_CALL_SERVER_ACK_REQUEST) { _debug("________awaiting reply/ACK__________"); |