lkml.org 
[lkml]   [2018]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] Input: evdev - add a schedule point in evdev_write()
Large writes to evdev interface may cause rcu stalls. Let's add
cond_resched() to the loop to avoid this.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/evdev.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 370206f987f9..f48369d6f3a0 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -564,6 +564,7 @@ static ssize_t evdev_write(struct file *file, const char __user *buffer,

input_inject_event(&evdev->handle,
event.type, event.code, event.value);
+ cond_resched();
}

out:
--
2.19.0.605.g01d371f741-goog

--
Dmitry

\
 
 \ /
  Last update: 2018-10-05 02:54    [W:0.046 / U:1.440 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site