diff options
Diffstat (limited to 'target/linux/generic/backport-4.9/024-8-tcp-tsq-move-tsq_flags-close-to-sk_wmem_alloc.patch')
1 files changed, 0 insertions, 176 deletions
diff --git a/target/linux/generic/backport-4.9/024-8-tcp-tsq-move-tsq_flags-close-to-sk_wmem_alloc.patch b/target/linux/generic/backport-4.9/024-8-tcp-tsq-move-tsq_flags-close-to-sk_wmem_alloc.patch deleted file mode 100644 index 4ac95d3ee4..0000000000 --- a/target/linux/generic/backport-4.9/024-8-tcp-tsq-move-tsq_flags-close-to-sk_wmem_alloc.patch +++ /dev/null @@ -1,176 +0,0 @@ -From 7aa5470c2c09265902b5e4289afa82e4e7c2987e Mon Sep 17 00:00:00 2001 -From: Eric Dumazet <edumazet@google.com> -Date: Sat, 3 Dec 2016 11:14:57 -0800 -Subject: [PATCH 08/10] tcp: tsq: move tsq_flags close to sk_wmem_alloc - -tsq_flags being in the same cache line than sk_wmem_alloc -makes a lot of sense. Both fields are changed from tcp_wfree() -and more generally by various TSQ related functions. - -Prior patch made room in struct sock and added sk_tsq_flags, -this patch deletes tsq_flags from struct tcp_sock. - -Signed-off-by: Eric Dumazet <edumazet@google.com> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - include/linux/tcp.h | 1 - - net/ipv4/tcp.c | 4 ++-- - net/ipv4/tcp_ipv4.c | 2 +- - net/ipv4/tcp_output.c | 24 +++++++++++------------- - net/ipv4/tcp_timer.c | 4 ++-- - net/ipv6/tcp_ipv6.c | 2 +- - 6 files changed, 17 insertions(+), 20 deletions(-) - ---- a/include/linux/tcp.h -+++ b/include/linux/tcp.h -@@ -192,7 +192,6 @@ struct tcp_sock { - u32 tsoffset; /* timestamp offset */ - - struct list_head tsq_node; /* anchor in tsq_tasklet.head list */ -- unsigned long tsq_flags; - - /* Data for direct copy to user */ - struct { ---- a/net/ipv4/tcp.c -+++ b/net/ipv4/tcp.c -@@ -665,9 +665,9 @@ static void tcp_push(struct sock *sk, in - if (tcp_should_autocork(sk, skb, size_goal)) { - - /* avoid atomic op if TSQ_THROTTLED bit is already set */ -- if (!test_bit(TSQ_THROTTLED, &tp->tsq_flags)) { -+ if (!test_bit(TSQ_THROTTLED, &sk->sk_tsq_flags)) { - NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTOCORKING); -- set_bit(TSQ_THROTTLED, &tp->tsq_flags); -+ set_bit(TSQ_THROTTLED, &sk->sk_tsq_flags); - } - /* It is possible TX completion already happened - * before we set TSQ_THROTTLED. ---- a/net/ipv4/tcp_ipv4.c -+++ b/net/ipv4/tcp_ipv4.c -@@ -446,7 +446,7 @@ void tcp_v4_err(struct sk_buff *icmp_skb - if (!sock_owned_by_user(sk)) { - tcp_v4_mtu_reduced(sk); - } else { -- if (!test_and_set_bit(TCP_MTU_REDUCED_DEFERRED, &tp->tsq_flags)) -+ if (!test_and_set_bit(TCP_MTU_REDUCED_DEFERRED, &sk->sk_tsq_flags)) - sock_hold(sk); - } - goto out; ---- a/net/ipv4/tcp_output.c -+++ b/net/ipv4/tcp_output.c -@@ -773,14 +773,15 @@ static void tcp_tasklet_func(unsigned lo - list_for_each_safe(q, n, &list) { - tp = list_entry(q, struct tcp_sock, tsq_node); - list_del(&tp->tsq_node); -- clear_bit(TSQ_QUEUED, &tp->tsq_flags); - - sk = (struct sock *)tp; -+ clear_bit(TSQ_QUEUED, &sk->sk_tsq_flags); -+ - if (!sk->sk_lock.owned && -- test_bit(TCP_TSQ_DEFERRED, &tp->tsq_flags)) { -+ test_bit(TCP_TSQ_DEFERRED, &sk->sk_tsq_flags)) { - bh_lock_sock(sk); - if (!sock_owned_by_user(sk)) { -- clear_bit(TCP_TSQ_DEFERRED, &tp->tsq_flags); -+ clear_bit(TCP_TSQ_DEFERRED, &sk->sk_tsq_flags); - tcp_tsq_handler(sk); - } - bh_unlock_sock(sk); -@@ -803,16 +804,15 @@ static void tcp_tasklet_func(unsigned lo - */ - void tcp_release_cb(struct sock *sk) - { -- struct tcp_sock *tp = tcp_sk(sk); - unsigned long flags, nflags; - - /* perform an atomic operation only if at least one flag is set */ - do { -- flags = tp->tsq_flags; -+ flags = sk->sk_tsq_flags; - if (!(flags & TCP_DEFERRED_ALL)) - return; - nflags = flags & ~TCP_DEFERRED_ALL; -- } while (cmpxchg(&tp->tsq_flags, flags, nflags) != flags); -+ } while (cmpxchg(&sk->sk_tsq_flags, flags, nflags) != flags); - - if (flags & TCPF_TSQ_DEFERRED) - tcp_tsq_handler(sk); -@@ -884,7 +884,7 @@ void tcp_wfree(struct sk_buff *skb) - if (wmem >= SKB_TRUESIZE(1) && this_cpu_ksoftirqd() == current) - goto out; - -- for (oval = READ_ONCE(tp->tsq_flags);; oval = nval) { -+ for (oval = READ_ONCE(sk->sk_tsq_flags);; oval = nval) { - struct tsq_tasklet *tsq; - bool empty; - -@@ -892,7 +892,7 @@ void tcp_wfree(struct sk_buff *skb) - goto out; - - nval = (oval & ~TSQF_THROTTLED) | TSQF_QUEUED | TCPF_TSQ_DEFERRED; -- nval = cmpxchg(&tp->tsq_flags, oval, nval); -+ nval = cmpxchg(&sk->sk_tsq_flags, oval, nval); - if (nval != oval) - continue; - -@@ -2151,7 +2151,7 @@ static bool tcp_small_queue_check(struct - skb->prev == sk->sk_write_queue.next) - return false; - -- set_bit(TSQ_THROTTLED, &tcp_sk(sk)->tsq_flags); -+ set_bit(TSQ_THROTTLED, &sk->sk_tsq_flags); - /* It is possible TX completion already happened - * before we set TSQ_THROTTLED, so we must - * test again the condition. -@@ -2249,8 +2249,8 @@ static bool tcp_write_xmit(struct sock * - unlikely(tso_fragment(sk, skb, limit, mss_now, gfp))) - break; - -- if (test_bit(TCP_TSQ_DEFERRED, &tp->tsq_flags)) -- clear_bit(TCP_TSQ_DEFERRED, &tp->tsq_flags); -+ if (test_bit(TCP_TSQ_DEFERRED, &sk->sk_tsq_flags)) -+ clear_bit(TCP_TSQ_DEFERRED, &sk->sk_tsq_flags); - if (tcp_small_queue_check(sk, skb, 0)) - break; - -@@ -3569,8 +3569,6 @@ void __tcp_send_ack(struct sock *sk, u32 - /* We do not want pure acks influencing TCP Small Queues or fq/pacing - * too much. - * SKB_TRUESIZE(max(1 .. 66, MAX_TCP_HEADER)) is unfortunately ~784 -- * We also avoid tcp_wfree() overhead (cache line miss accessing -- * tp->tsq_flags) by using regular sock_wfree() - */ - skb_set_tcp_pure_ack(buff); - ---- a/net/ipv4/tcp_timer.c -+++ b/net/ipv4/tcp_timer.c -@@ -327,7 +327,7 @@ static void tcp_delack_timer(unsigned lo - inet_csk(sk)->icsk_ack.blocked = 1; - __NET_INC_STATS(sock_net(sk), LINUX_MIB_DELAYEDACKLOCKED); - /* deleguate our work to tcp_release_cb() */ -- if (!test_and_set_bit(TCP_DELACK_TIMER_DEFERRED, &tcp_sk(sk)->tsq_flags)) -+ if (!test_and_set_bit(TCP_DELACK_TIMER_DEFERRED, &sk->sk_tsq_flags)) - sock_hold(sk); - } - bh_unlock_sock(sk); -@@ -610,7 +610,7 @@ static void tcp_write_timer(unsigned lon - tcp_write_timer_handler(sk); - } else { - /* delegate our work to tcp_release_cb() */ -- if (!test_and_set_bit(TCP_WRITE_TIMER_DEFERRED, &tcp_sk(sk)->tsq_flags)) -+ if (!test_and_set_bit(TCP_WRITE_TIMER_DEFERRED, &sk->sk_tsq_flags)) - sock_hold(sk); - } - bh_unlock_sock(sk); ---- a/net/ipv6/tcp_ipv6.c -+++ b/net/ipv6/tcp_ipv6.c -@@ -404,7 +404,7 @@ static void tcp_v6_err(struct sk_buff *s - if (!sock_owned_by_user(sk)) - tcp_v6_mtu_reduced(sk); - else if (!test_and_set_bit(TCP_MTU_REDUCED_DEFERRED, -- &tp->tsq_flags)) -+ &sk->sk_tsq_flags)) - sock_hold(sk); - goto out; - } |