qubes-linux-kernel/patches.suse/linux-2.6.29-dont-wait-for-mouse.patch

From dce8113d033975f56630cf6d2a6a908cfb66059d Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sun, 20 Jul 2008 13:12:16 -0700
Subject: [PATCH] fastboot: remove "wait for all devices before mounting root" delay
Patch-mainline: not yet

In the non-initrd case, we wait for all devices to finish their
probing before we try to mount the rootfs.
In practice, this means that we end up waiting 2 extra seconds for
the PS/2 mouse probing even though the root holding device has been
ready since a long time.

The previous two patches in this series made the RAID autodetect code
do it's own "wait for probing to be done" code, and added
"wait and retry" functionality in case the root device isn't actually
available.

These two changes should make it safe to remove the delay itself,
and this patch does this. On my test laptop, this reduces the boot time
by 2 seconds (kernel time goes from 3.9 to 1.9 seconds).

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 init/do_mounts.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -373,6 +373,7 @@ void __init prepare_namespace(void)
 		ssleep(root_delay);
 	}
 
+#if 0
 	/*
 	 * wait for the known devices to complete their probing
 	 *
@@ -381,6 +382,8 @@ void __init prepare_namespace(void)
 	 * for the touchpad of a laptop to initialize.
 	 */
 	wait_for_device_probe();
+#endif
+	async_synchronize_full();
 
 	md_run_setup();