lkml.org 
[lkml]   [2019]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] tty: increase the default flip buffer limit to 2*640K
Date
From: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>

The default value for this was 64K. We increase this by a factor of
10 to 640K to prevent data loss when using fast serial interfaces.

Since this value is only a maximum limit for allocation and isn't used
by default, this change has minimal effect on systems with slow interfaces.

Signed-off-by: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
---

Is there any reason for this _limit_ to be as small as 64K?

thanks,

martin



drivers/tty/tty_buffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 77070c2d1240..ec145a59f199 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -26,7 +26,7 @@
* Byte threshold to limit memory consumption for flip buffers.
* The actual memory limit is > 2x this amount.
*/
-#define TTYB_DEFAULT_MEM_LIMIT 65536
+#define TTYB_DEFAULT_MEM_LIMIT (640 * 1024UL)

/*
* We default to dicing tty buffer allocations to this many characters
--
2.20.1
\
 
 \ /
  Last update: 2019-01-28 17:39    [W:2.391 / U:0.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site