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rxrpc: Remove skb_count from struct rxrpc_call
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Remove the sk_buff count from the rxrpc_call struct as it's less useful
once we stop queueing sk_buffs.

Signed-off-by: David Howells <dhowells@redhat.com>
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David Howells committed Sep 8, 2016
1 parent de8d6c7 commit 2ab2721
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Showing 3 changed files with 15 additions and 30 deletions.
10 changes: 3 additions & 7 deletions include/trace/events/rxrpc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -18,16 +18,14 @@

TRACE_EVENT(rxrpc_call,
TP_PROTO(struct rxrpc_call *call, enum rxrpc_call_trace op,
int usage, int nskb,
const void *where, const void *aux),
int usage, const void *where, const void *aux),

TP_ARGS(call, op, usage, nskb, where, aux),
TP_ARGS(call, op, usage, where, aux),

TP_STRUCT__entry(
__field(struct rxrpc_call *, call )
__field(int, op )
__field(int, usage )
__field(int, nskb )
__field(const void *, where )
__field(const void *, aux )
),
Expand All @@ -36,16 +34,14 @@ TRACE_EVENT(rxrpc_call,
__entry->call = call;
__entry->op = op;
__entry->usage = usage;
__entry->nskb = nskb;
__entry->where = where;
__entry->aux = aux;
),

TP_printk("c=%p %s u=%d s=%d p=%pSR a=%p",
TP_printk("c=%p %s u=%d sp=%pSR a=%p",
__entry->call,
rxrpc_call_traces[__entry->op],
__entry->usage,
__entry->nskb,
__entry->where,
__entry->aux)
);
Expand Down
1 change: 0 additions & 1 deletion net/rxrpc/ar-internal.h
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Original file line number Diff line number Diff line change
Expand Up @@ -467,7 +467,6 @@ struct rxrpc_call {
enum rxrpc_call_state state; /* current state of call */
enum rxrpc_call_completion completion; /* Call completion condition */
atomic_t usage;
atomic_t skb_count; /* Outstanding packets on this call */
atomic_t sequence; /* Tx data packet sequence counter */
u16 service_id; /* service ID */
u8 security_ix; /* Security type */
Expand Down
34 changes: 12 additions & 22 deletions net/rxrpc/call_object.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -232,9 +232,8 @@ struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *rx,
return call;
}

trace_rxrpc_call(call, rxrpc_call_new_client,
atomic_read(&call->usage), 0,
here, (const void *)user_call_ID);
trace_rxrpc_call(call, 0, atomic_read(&call->usage), here,
(const void *)user_call_ID);

/* Publish the call, even though it is incompletely set up as yet */
call->user_call_ID = user_call_ID;
Expand Down Expand Up @@ -325,7 +324,7 @@ struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *rx,
return ERR_PTR(-EBUSY);

trace_rxrpc_call(candidate, rxrpc_call_new_service,
atomic_read(&candidate->usage), 0, here, NULL);
atomic_read(&candidate->usage), here, NULL);

chan = sp->hdr.cid & RXRPC_CHANNELMASK;
candidate->conn = conn;
Expand Down Expand Up @@ -446,11 +445,10 @@ bool rxrpc_queue_call(struct rxrpc_call *call)
{
const void *here = __builtin_return_address(0);
int n = __atomic_add_unless(&call->usage, 1, 0);
int m = atomic_read(&call->skb_count);
if (n == 0)
return false;
if (rxrpc_queue_work(&call->processor))
trace_rxrpc_call(call, rxrpc_call_queued, n + 1, m, here, NULL);
trace_rxrpc_call(call, rxrpc_call_queued, n + 1, here, NULL);
else
rxrpc_put_call(call, rxrpc_call_put_noqueue);
return true;
Expand All @@ -463,10 +461,9 @@ bool __rxrpc_queue_call(struct rxrpc_call *call)
{
const void *here = __builtin_return_address(0);
int n = atomic_read(&call->usage);
int m = atomic_read(&call->skb_count);
ASSERTCMP(n, >=, 1);
if (rxrpc_queue_work(&call->processor))
trace_rxrpc_call(call, rxrpc_call_queued_ref, n, m, here, NULL);
trace_rxrpc_call(call, rxrpc_call_queued_ref, n, here, NULL);
else
rxrpc_put_call(call, rxrpc_call_put_noqueue);
return true;
Expand All @@ -480,9 +477,8 @@ void rxrpc_see_call(struct rxrpc_call *call)
const void *here = __builtin_return_address(0);
if (call) {
int n = atomic_read(&call->usage);
int m = atomic_read(&call->skb_count);

trace_rxrpc_call(call, rxrpc_call_seen, n, m, here, NULL);
trace_rxrpc_call(call, rxrpc_call_seen, n, here, NULL);
}
}

Expand All @@ -493,9 +489,8 @@ void rxrpc_get_call(struct rxrpc_call *call, enum rxrpc_call_trace op)
{
const void *here = __builtin_return_address(0);
int n = atomic_inc_return(&call->usage);
int m = atomic_read(&call->skb_count);

trace_rxrpc_call(call, op, n, m, here, NULL);
trace_rxrpc_call(call, op, n, here, NULL);
}

/*
Expand All @@ -505,9 +500,8 @@ void rxrpc_get_call_for_skb(struct rxrpc_call *call, struct sk_buff *skb)
{
const void *here = __builtin_return_address(0);
int n = atomic_inc_return(&call->usage);
int m = atomic_inc_return(&call->skb_count);

trace_rxrpc_call(call, rxrpc_call_got_skb, n, m, here, skb);
trace_rxrpc_call(call, rxrpc_call_got_skb, n, here, skb);
}

/*
Expand Down Expand Up @@ -642,17 +636,15 @@ void rxrpc_release_calls_on_socket(struct rxrpc_sock *rx)
void rxrpc_put_call(struct rxrpc_call *call, enum rxrpc_call_trace op)
{
const void *here = __builtin_return_address(0);
int n, m;
int n;

ASSERT(call != NULL);

n = atomic_dec_return(&call->usage);
m = atomic_read(&call->skb_count);
trace_rxrpc_call(call, op, n, m, here, NULL);
trace_rxrpc_call(call, op, n, here, NULL);
ASSERTCMP(n, >=, 0);
if (n == 0) {
_debug("call %d dead", call->debug_id);
WARN_ON(m != 0);
rxrpc_cleanup_call(call);
}
}
Expand All @@ -663,15 +655,13 @@ void rxrpc_put_call(struct rxrpc_call *call, enum rxrpc_call_trace op)
void rxrpc_put_call_for_skb(struct rxrpc_call *call, struct sk_buff *skb)
{
const void *here = __builtin_return_address(0);
int n, m;
int n;

n = atomic_dec_return(&call->usage);
m = atomic_dec_return(&call->skb_count);
trace_rxrpc_call(call, rxrpc_call_put_skb, n, m, here, skb);
trace_rxrpc_call(call, rxrpc_call_put_skb, n, here, skb);
ASSERTCMP(n, >=, 0);
if (n == 0) {
_debug("call %d dead", call->debug_id);
WARN_ON(m != 0);
rxrpc_cleanup_call(call);
}
}
Expand Down

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