From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.9 4/9] Input: uinput - add a schedule point in uinput_inject_events()
Date: Mon, 22 Oct 2018 06:21:28 -0400 [thread overview]
Message-ID: <20181022102133.41222-4-sashal@kernel.org> (raw)
In-Reply-To: <20181022102133.41222-1-sashal@kernel.org>
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[ Upstream commit cecf10704899467a787975e3d94a1f0129b9688e ]
Large writes to uinput interface may cause rcu stalls. Let's add
cond_resched() to the loop to avoid this.
Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/input/misc/uinput.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 022be0e22eba..d015fd7151c1 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -540,6 +540,7 @@ static ssize_t uinput_inject_events(struct uinput_device *udev,
input_event(udev->dev, ev.type, ev.code, ev.value);
bytes += input_event_size();
+ cond_resched();
}
return bytes;
--
2.17.1
next prev parent reply other threads:[~2018-10-22 10:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-22 10:21 [PATCH AUTOSEL 4.9 1/9] ARM: dts: imx53-qsb: disable 1.2GHz OPP Sasha Levin
2018-10-22 10:21 ` [PATCH AUTOSEL 4.9 2/9] Input: mousedev - add a schedule point in mousedev_write() Sasha Levin
2018-10-22 10:21 ` [PATCH AUTOSEL 4.9 3/9] Input: evdev - add a schedule point in evdev_write() Sasha Levin
2018-10-22 10:21 ` Sasha Levin [this message]
2018-10-22 10:21 ` [PATCH AUTOSEL 4.9 5/9] rxrpc: Don't check RXRPC_CALL_TX_LAST after calling rxrpc_rotate_tx_window() Sasha Levin
2018-10-22 10:21 ` [PATCH AUTOSEL 4.9 6/9] rxrpc: Only take the rwind and mtu values from latest ACK Sasha Levin
2018-10-22 10:21 ` [PATCH AUTOSEL 4.9 7/9] net: ena: fix NULL dereference due to untimely napi initialization Sasha Levin
2018-10-22 10:21 ` [PATCH AUTOSEL 4.9 8/9] libertas: call into generic suspend code before turning off power Sasha Levin
2018-10-22 10:21 ` [PATCH AUTOSEL 4.9 9/9] fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() Sasha Levin
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