projects / xen.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 397a059) | patch
linux: More save/restore fixes. Fix deadlock of cpu_hotplug_lock vs
authorkfraser@localhost.localdomain <kfraser@localhost.localdomain>
Wed, 28 Feb 2007 17:55:19 +0000 (17:55 +0000)
committerkfraser@localhost.localdomain <kfraser@localhost.localdomain>
Wed, 28 Feb 2007 17:55:19 +0000 (17:55 +0000)
commited372f4e41d39dd960a32c3540b09ff29ac7f03a
tree221b9c14376c8ab047a5f890adf1255cffb583a3tree | snapshot
parent397a0592805228ea823545ff3210f7ae5d2817bccommit | diff
linux: More save/restore fixes. Fix deadlock of cpu_hotplug_lock vs
workqueue_mutex. This is a new deadlock since the workqueue_mutex is
acquired in the workqueue_cpu_calbback() function across
CPU_UP_PREPARE->CPU_ONLINE.

The fix is for us not to rudely grab the cpu_hotplug_lock() during
save/restore -- it's really not necessary.

This patch is applicable to any of our 2.6 kernels, but is absolutely
required from 2.6.18 onwards.

Signed-off-by: Keir Fraser <keir@xensource.com>
linux-2.6-xen-sparse/drivers/xen/core/cpu_hotplug.c diff | blob | history
linux-2.6-xen-sparse/drivers/xen/core/machine_reboot.c diff | blob | history
linux-2.6-xen-sparse/drivers/xen/core/smpboot.c diff | blob | history
linux-2.6-xen-sparse/include/xen/cpu_hotplug.h diff | blob | history
Unnamed repository; edit this file 'description' to name the repository.