Schedule the Tasklet to send only when mailbox fifo is full, else
send the message in the Process context. This would avoid
needless scheduling of Tasklet for every message transfer
Signed-off-by: Hari Kanigeri <h-kanige...@ti.com>
---
arch/arm/plat-omap/mailbox.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c
index ed960c1..a4170c7 100644
--- a/arch/arm/plat-omap/mailbox.c
+++ b/arch/arm/plat-omap/mailbox.c
@@ -92,20 +92,25 @@ int omap_mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t
msg)
struct omap_mbox_queue *mq = mbox->txq;
int ret = 0, len;
- spin_lock(&mq->lock);
+ spin_lock_bh(&mq->lock);
if (kfifo_avail(&mq->fifo) < sizeof(msg)) {
ret = -ENOMEM;
goto out;
}
+ if (!__mbox_poll_for_space(mbox)) {
+ mbox_fifo_write(mbox, msg);
+ goto out;
+ }
+
len = kfifo_in(&mq->fifo, (unsigned char *)&msg, sizeof(msg));
WARN_ON(len != sizeof(msg));
tasklet_schedule(&mbox->txq->tasklet);
out:
- spin_unlock(&mq->lock);
+ spin_unlock_bh(&mq->lock);
return ret;
}
EXPORT_SYMBOL(omap_mbox_msg_send);
--
1.7.0
--
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