From: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> To: marcel@holtmann.org, johan.hedberg@gmail.com, luiz.dentz@gmail.com, davem@davemloft.net, kuba@kernel.org, sudipm.mukherjee@gmail.com Cc: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>, linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, gregkh@linuxfoundation.org, linux-kernel-mentees@lists.linuxfoundation.org Subject: [RESEND PATCH v5 3/6] Bluetooth: switch to lock_sock in SCO Date: Wed, 4 Aug 2021 23:47:09 +0800 [thread overview] Message-ID: <20210804154712.929986-4-desmondcheongzx@gmail.com> (raw) In-Reply-To: <20210804154712.929986-1-desmondcheongzx@gmail.com> Since sco_sock_timeout is now scheduled using delayed work, it is no longer run in SOFTIRQ context. Hence bh_lock_sock is no longer necessary in SCO to synchronise between user contexts and SOFTIRQ processing. As such, calls to bh_lock_sock should be replaced with lock_sock to synchronize with other concurrent processes that use lock_sock. Signed-off-by: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> --- net/bluetooth/sco.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 558f8874b65e..1246e6bc09fe 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -93,10 +93,10 @@ static void sco_sock_timeout(struct work_struct *work) BT_DBG("sock %p state %d", sk, sk->sk_state); - bh_lock_sock(sk); + lock_sock(sk); sk->sk_err = ETIMEDOUT; sk->sk_state_change(sk); - bh_unlock_sock(sk); + release_sock(sk); sco_sock_kill(sk); sock_put(sk); @@ -199,10 +199,10 @@ static void sco_conn_del(struct hci_conn *hcon, int err) if (sk) { sock_hold(sk); - bh_lock_sock(sk); + lock_sock(sk); sco_sock_clear_timer(sk); sco_chan_del(sk, err); - bh_unlock_sock(sk); + release_sock(sk); sco_sock_kill(sk); sock_put(sk); @@ -1111,10 +1111,10 @@ static void sco_conn_ready(struct sco_conn *conn) if (sk) { sco_sock_clear_timer(sk); - bh_lock_sock(sk); + lock_sock(sk); sk->sk_state = BT_CONNECTED; sk->sk_state_change(sk); - bh_unlock_sock(sk); + release_sock(sk); } else { sco_conn_lock(conn); @@ -1129,12 +1129,12 @@ static void sco_conn_ready(struct sco_conn *conn) return; } - bh_lock_sock(parent); + lock_sock(parent); sk = sco_sock_alloc(sock_net(parent), NULL, BTPROTO_SCO, GFP_ATOMIC, 0); if (!sk) { - bh_unlock_sock(parent); + release_sock(parent); sco_conn_unlock(conn); return; } @@ -1155,7 +1155,7 @@ static void sco_conn_ready(struct sco_conn *conn) /* Wake up parent */ parent->sk_data_ready(parent); - bh_unlock_sock(parent); + release_sock(parent); sco_conn_unlock(conn); } -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> To: marcel@holtmann.org, johan.hedberg@gmail.com, luiz.dentz@gmail.com, davem@davemloft.net, kuba@kernel.org, sudipm.mukherjee@gmail.com Cc: linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>, linux-kernel-mentees@lists.linuxfoundation.org Subject: [RESEND PATCH v5 3/6] Bluetooth: switch to lock_sock in SCO Date: Wed, 4 Aug 2021 23:47:09 +0800 [thread overview] Message-ID: <20210804154712.929986-4-desmondcheongzx@gmail.com> (raw) In-Reply-To: <20210804154712.929986-1-desmondcheongzx@gmail.com> Since sco_sock_timeout is now scheduled using delayed work, it is no longer run in SOFTIRQ context. Hence bh_lock_sock is no longer necessary in SCO to synchronise between user contexts and SOFTIRQ processing. As such, calls to bh_lock_sock should be replaced with lock_sock to synchronize with other concurrent processes that use lock_sock. Signed-off-by: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> --- net/bluetooth/sco.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 558f8874b65e..1246e6bc09fe 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -93,10 +93,10 @@ static void sco_sock_timeout(struct work_struct *work) BT_DBG("sock %p state %d", sk, sk->sk_state); - bh_lock_sock(sk); + lock_sock(sk); sk->sk_err = ETIMEDOUT; sk->sk_state_change(sk); - bh_unlock_sock(sk); + release_sock(sk); sco_sock_kill(sk); sock_put(sk); @@ -199,10 +199,10 @@ static void sco_conn_del(struct hci_conn *hcon, int err) if (sk) { sock_hold(sk); - bh_lock_sock(sk); + lock_sock(sk); sco_sock_clear_timer(sk); sco_chan_del(sk, err); - bh_unlock_sock(sk); + release_sock(sk); sco_sock_kill(sk); sock_put(sk); @@ -1111,10 +1111,10 @@ static void sco_conn_ready(struct sco_conn *conn) if (sk) { sco_sock_clear_timer(sk); - bh_lock_sock(sk); + lock_sock(sk); sk->sk_state = BT_CONNECTED; sk->sk_state_change(sk); - bh_unlock_sock(sk); + release_sock(sk); } else { sco_conn_lock(conn); @@ -1129,12 +1129,12 @@ static void sco_conn_ready(struct sco_conn *conn) return; } - bh_lock_sock(parent); + lock_sock(parent); sk = sco_sock_alloc(sock_net(parent), NULL, BTPROTO_SCO, GFP_ATOMIC, 0); if (!sk) { - bh_unlock_sock(parent); + release_sock(parent); sco_conn_unlock(conn); return; } @@ -1155,7 +1155,7 @@ static void sco_conn_ready(struct sco_conn *conn) /* Wake up parent */ parent->sk_data_ready(parent); - bh_unlock_sock(parent); + release_sock(parent); sco_conn_unlock(conn); } -- 2.25.1 _______________________________________________ Linux-kernel-mentees mailing list Linux-kernel-mentees@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees
next prev parent reply other threads:[~2021-08-04 15:48 UTC|newest] Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-04 15:47 [RESEND PATCH v5 0/6] Bluetooth: fix locking and socket killing in SCO and RFCOMM Desmond Cheong Zhi Xi 2021-08-04 15:47 ` Desmond Cheong Zhi Xi 2021-08-04 15:47 ` [RESEND PATCH v5 1/6] Bluetooth: schedule SCO timeouts with delayed_work Desmond Cheong Zhi Xi 2021-08-04 15:47 ` Desmond Cheong Zhi Xi 2021-08-04 16:12 ` Bluetooth: fix locking and socket killing in SCO and RFCOMM bluez.test.bot 2021-08-05 19:06 ` [RESEND PATCH v5 1/6] Bluetooth: schedule SCO timeouts with delayed_work Luiz Augusto von Dentz 2021-08-05 19:06 ` Luiz Augusto von Dentz 2021-08-09 4:04 ` Desmond Cheong Zhi Xi 2021-08-09 4:04 ` Desmond Cheong Zhi Xi 2021-08-09 16:42 ` Luiz Augusto von Dentz 2021-08-09 16:42 ` Luiz Augusto von Dentz 2021-08-04 15:47 ` [RESEND PATCH v5 2/6] Bluetooth: avoid circular locks in sco_sock_connect Desmond Cheong Zhi Xi 2021-08-04 15:47 ` Desmond Cheong Zhi Xi 2021-08-04 15:47 ` Desmond Cheong Zhi Xi [this message] 2021-08-04 15:47 ` [RESEND PATCH v5 3/6] Bluetooth: switch to lock_sock in SCO Desmond Cheong Zhi Xi 2021-08-04 15:47 ` [RESEND PATCH v5 4/6] Bluetooth: serialize calls to sco_sock_{set,clear}_timer Desmond Cheong Zhi Xi 2021-08-04 15:47 ` [RESEND PATCH v5 4/6] Bluetooth: serialize calls to sco_sock_{set, clear}_timer Desmond Cheong Zhi Xi 2021-08-04 15:47 ` [RESEND PATCH v5 5/6] Bluetooth: switch to lock_sock in RFCOMM Desmond Cheong Zhi Xi 2021-08-04 15:47 ` Desmond Cheong Zhi Xi 2021-08-04 15:47 ` [RESEND PATCH v5 6/6] Bluetooth: fix repeated calls to sco_sock_kill Desmond Cheong Zhi Xi 2021-08-04 15:47 ` Desmond Cheong Zhi Xi
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