From: Junyong Sun <sunjy516@gmail.com>
To: arnd@arndb.de, gregkh@linuxfoundation.org, sunjunyong@xiaomi.com
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] ttyprintk: optimize tpk_close flush code
Date: Wed, 4 Nov 2020 14:02:24 +0800 [thread overview]
Message-ID: <1604469744-8708-1-git-send-email-sunjunyong@xiaomi.com> (raw)
tpk_printk(NULL,0) do nothing but call tpk_flush to
flush buffer, so why don't use tpk_flush diretcly?
this is a small optimization.
Signed-off-by: Junyong Sun <sunjunyong@xiaomi.com>
---
drivers/char/ttyprintk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c
index 6a0059e..2ce78b3 100644
--- a/drivers/char/ttyprintk.c
+++ b/drivers/char/ttyprintk.c
@@ -104,7 +104,7 @@ static void tpk_close(struct tty_struct *tty, struct file *filp)
spin_lock_irqsave(&tpkp->spinlock, flags);
/* flush tpk_printk buffer */
- tpk_printk(NULL, 0);
+ tpk_flush();
spin_unlock_irqrestore(&tpkp->spinlock, flags);
tty_port_close(&tpkp->port, tty, filp);
--
2.7.4
next reply other threads:[~2020-11-04 6:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-04 6:02 Junyong Sun [this message]
2020-11-12 7:52 ` [PATCH] ttyprintk: optimize tpk_close flush code Greg KH
2020-11-12 13:41 ` sunjunyong
2020-11-12 17:17 ` Greg KH
2020-11-13 2:38 ` sunjunyong
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