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Message-ID: <147333503696.5646.7766598163305325611.stgit@warthog.procyon.org.uk>
Date: Thu, 08 Sep 2016 12:43:57 +0100
From: David Howells <dhowells@...hat.com>
To: netdev@...r.kernel.org
Cc: dhowells@...hat.com, linux-afs@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next 4/7] rxrpc: Remove skb_count from struct rxrpc_call
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@...hat.com>
---
include/trace/events/rxrpc.h | 10 +++-------
net/rxrpc/ar-internal.h | 1 -
net/rxrpc/call_object.c | 34 ++++++++++++----------------------
3 files changed, 15 insertions(+), 30 deletions(-)
diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h
index 85ee035774ae..6b06cf050bc0 100644
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -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 )
),
@@ -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)
);
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index fd438dc93ee9..027791261768 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -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 */
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index 9efd9b0b0bdf..f843397e03b6 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -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;
@@ -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;
@@ -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;
@@ -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;
@@ -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);
}
}
@@ -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);
}
/*
@@ -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);
}
/*
@@ -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);
}
}
@@ -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);
}
}
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