We will need this new helper in the next patch.
Unified · Split
| @@ -532,6 +532,15 @@ static void flush_to_ldisc(struct work_struct *work) · 531 unmodified lines | |||
| 532 | 532 | ||
| 533 | } | 533 | } |
| 534 | 534 | ||
| 535 | static inline void tty_flip_buffer_commit(struct tty_buffer *tail) | ||
| 536 | { | ||
| 537 | /* | ||
| 538 | * Paired w/ acquire in flush_to_ldisc(); ensures flush_to_ldisc() sees | ||
| 539 | * buffer data. | ||
| 540 | */ | ||
| 541 | smp_store_release(&tail->commit, tail->used); | ||
| 542 | } | ||
| 543 | |||
| 535 | /** | 544 | /** |
| 536 | * tty_flip_buffer_push - push terminal buffers | 545 | * tty_flip_buffer_push - push terminal buffers |
| 537 | * @port: tty port to push | 546 | * @port: tty port to push |
| @@ -546,11 +555,7 @@ void tty_flip_buffer_push(struct tty_port *port) · 8 unmodified lines | |||
| 546 | { | 555 | { |
| 547 | struct tty_bufhead *buf = &port->buf; | 556 | struct tty_bufhead *buf = &port->buf; |
| 548 | 557 | ||
| 549 | /* | 558 | tty_flip_buffer_commit(buf->tail); |
| 550 | * Paired w/ acquire in flush_to_ldisc(); ensures flush_to_ldisc() sees | ||
| 551 | * buffer data. | ||
| 552 | */ | ||
| 553 | smp_store_release(&buf->tail->commit, buf->tail->used); | ||
| 554 | queue_work(system_unbound_wq, &buf->work); | 559 | queue_work(system_unbound_wq, &buf->work); |
| 555 | } | 560 | } |
| 556 | EXPORT_SYMBOL(tty_flip_buffer_push); | 561 | EXPORT_SYMBOL(tty_flip_buffer_push); |