From: Andi Kleen <andi@firstfloor.org>
Date: Mon, 10 Nov 2008 21:51:50 +0000 (+0100)
Subject: HID: use single threaded work queue for hid_compat
X-Git-Tag: firefly_0821_release~16793^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=43ff3a48c13f3ddc085271c2eea2985d28c8aa08;p=firefly-linux-kernel-4.4.55.git

HID: use single threaded work queue for hid_compat

Use single threaded work queue for hid_compat

I doubt HID really needs to scale over multiple CPUs. So only use a
single threaded workqueue for HID_COMPAT. This avoids some excessive
thread use on systems with a larger number of CPUs.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 4f0b92edb4df..e158aa83b92f 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1736,7 +1736,7 @@ static int __init hid_init(void)
 		goto err_bus;
 
 #ifdef CONFIG_HID_COMPAT
-	hid_compat_wq = create_workqueue("hid_compat");
+	hid_compat_wq = create_singlethread_workqueue("hid_compat");
 	if (!hid_compat_wq) {
 		hidraw_exit();
 		goto err;