diff options
| author | David Howells <dhowells@redhat.com> | 2022-10-20 09:08:34 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-01-06 09:43:31 +0000 |
| commit | f2cce89a074e6d2991dddc94f6b6ebe1576b8459 (patch) | |
| tree | 98bf03d234ce0e6de0e16d2b5f3267b34f2e502c /net/rxrpc/io_thread.c | |
| parent | 03fc55adf8761c546d72798264b019c9f672c578 (diff) | |
rxrpc: Implement a mechanism to send an event notification to a connection
Provide a means by which an event notification can be sent to a connection
through such that the I/O thread can pick it up and handle it rather than
doing it in a separate workqueue.
This is then used to move the deferred final ACK of a call into the I/O
thread rather than a separate work queue as part of the drive to do all
transmission from the I/O thread.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Diffstat (limited to 'net/rxrpc/io_thread.c')
| -rw-r--r-- | net/rxrpc/io_thread.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/net/rxrpc/io_thread.c b/net/rxrpc/io_thread.c index 0e1a548d35f8..46e58cf5bc96 100644 --- a/net/rxrpc/io_thread.c +++ b/net/rxrpc/io_thread.c @@ -421,6 +421,7 @@ reject_packet: */ int rxrpc_io_thread(void *data) { + struct rxrpc_connection *conn; struct sk_buff_head rx_queue; struct rxrpc_local *local = data; struct rxrpc_call *call; @@ -436,6 +437,20 @@ int rxrpc_io_thread(void *data) for (;;) { rxrpc_inc_stat(local->rxnet, stat_io_loop); + /* Deal with connections that want immediate attention. */ + conn = list_first_entry_or_null(&local->conn_attend_q, + struct rxrpc_connection, + attend_link); + if (conn) { + spin_lock_bh(&local->lock); + list_del_init(&conn->attend_link); + spin_unlock_bh(&local->lock); + + rxrpc_input_conn_event(conn, NULL); + rxrpc_put_connection(conn, rxrpc_conn_put_poke); + continue; + } + /* Deal with calls that want immediate attention. */ if ((call = list_first_entry_or_null(&local->call_attend_q, struct rxrpc_call, @@ -463,6 +478,7 @@ int rxrpc_io_thread(void *data) rxrpc_input_error(local, skb); rxrpc_free_skb(skb, rxrpc_skb_put_error_report); break; + break; default: WARN_ON_ONCE(1); rxrpc_free_skb(skb, rxrpc_skb_put_unknown); @@ -481,7 +497,8 @@ int rxrpc_io_thread(void *data) set_current_state(TASK_INTERRUPTIBLE); should_stop = kthread_should_stop(); if (!skb_queue_empty(&local->rx_queue) || - !list_empty(&local->call_attend_q)) { + !list_empty(&local->call_attend_q) || + !list_empty(&local->conn_attend_q)) { __set_current_state(TASK_RUNNING); continue; } |