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authorJiri Slaby <jslaby@suse.cz>2020-10-29 14:32:22 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-11-04 18:43:39 +0300
commitc35f638fc2adbb9c439ce68b559d406387cbdbe8 (patch)
tree8704546ea269b8f36514e01ec607f054929f1729 /drivers/tty/vt
parent2389cdc36007ba28ebe6640d7dd5e3494318a909 (diff)
downloadlinux-c35f638fc2adbb9c439ce68b559d406387cbdbe8.tar.xz
vt: keyboard, use tty_insert_flip_string in puts_queue
'puts_queue' currently loops over characters and employs the full tty buffer machinery for every character. Do the buffer allocation only once and copy all the character at once. This is achieved using tty_insert_flip_string instead of loop+tty_insert_flip_char. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20201029113222.32640-17-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt')
-rw-r--r--drivers/tty/vt/keyboard.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 149f1791d7ec..56b5e8f8fe88 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -324,12 +324,9 @@ static void put_queue(struct vc_data *vc, int ch)
tty_schedule_flip(&vc->port);
}
-static void puts_queue(struct vc_data *vc, char *cp)
+static void puts_queue(struct vc_data *vc, const char *cp)
{
- while (*cp) {
- tty_insert_flip_char(&vc->port, *cp, 0);
- cp++;
- }
+ tty_insert_flip_string(&vc->port, cp, strlen(cp));
tty_schedule_flip(&vc->port);
}