diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2022-07-07 10:25:57 +0200 |
|---|---|---|
| committer | Alexander Grund <flamefire89@gmail.com> | 2023-11-09 19:17:10 +0100 |
| commit | f714603039fbd41f14b37149ee50ced36666ed94 (patch) | |
| tree | 51eb7d933225ff87b248cf246a376a2433cdcf58 | |
| parent | 9d0eb0082cdba627e720b12e9db80e5e3c884680 (diff) | |
tty: extract tty_flip_buffer_commit() from tty_flip_buffer_push()
commit 716b10580283fda66f2b88140e3964f8a7f9da89 upstream.
We will need this new helper in the next patch.
Cc: Hillf Danton <hdanton@sina.com>
Cc: 一只狗 <chennbnbnb@gmail.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Change-Id: Iff30e1534948b64bf060c2b0ac290e541e4194b4
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220707082558.9250-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex: Adjust to changing tty_schedule_flip instead of tty_flip_buffer_push
| -rw-r--r-- | drivers/tty/tty_buffer.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 8f1f668c4532..fe03c216ea2b 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -389,6 +389,15 @@ int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag) } EXPORT_SYMBOL(__tty_insert_flip_char); +static inline void tty_flip_buffer_commit(struct tty_buffer *tail) +{ + /* + * Paired w/ acquire in flush_to_ldisc(); ensures flush_to_ldisc() sees + * buffer data. + */ + smp_store_release(&tail->commit, tail->used); +} + /** * tty_schedule_flip - push characters to ldisc * @port: tty port to push from @@ -402,10 +411,7 @@ void tty_schedule_flip(struct tty_port *port) { struct tty_bufhead *buf = &port->buf; - /* paired w/ acquire in flush_to_ldisc(); ensures - * flush_to_ldisc() sees buffer data. - */ - smp_store_release(&buf->tail->commit, buf->tail->used); + tty_flip_buffer_commit(buf->tail); queue_kthread_work(&port->worker, &buf->work); } EXPORT_SYMBOL(tty_schedule_flip); |