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Merge branch 'bugzilla-13751' into release

This commit is contained in:
Len Brown 2009-08-02 12:10:02 -04:00
parent f63440eff0 74b5820808
commit 6a61487791
1 changed files with 25 additions and 0 deletions
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25
drivers/acpi/osl.c
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@ -189,11 +189,36 @@ acpi_status __init acpi_os_initialize(void)
return AE_OK; return AE_OK;
} }
static void bind_to_cpu0(struct work_struct *work)
{
set_cpus_allowed(current, cpumask_of_cpu(0));
kfree(work);
}
static void bind_workqueue(struct workqueue_struct *wq)
{
struct work_struct *work;
work = kzalloc(sizeof(struct work_struct), GFP_KERNEL);
INIT_WORK(work, bind_to_cpu0);
queue_work(wq, work);
}
acpi_status acpi_os_initialize1(void) acpi_status acpi_os_initialize1(void)
{ {
/*
* On some machines, a software-initiated SMI causes corruption unless
* the SMI runs on CPU 0. An SMI can be initiated by any AML, but
* typically it's done in GPE-related methods that are run via
* workqueues, so we can avoid the known corruption cases by binding
* the workqueues to CPU 0.
*/
kacpid_wq = create_singlethread_workqueue("kacpid"); kacpid_wq = create_singlethread_workqueue("kacpid");
bind_workqueue(kacpid_wq);
kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify"); kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
bind_workqueue(kacpi_notify_wq);
kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug"); kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug");
bind_workqueue(kacpi_hotplug_wq);
BUG_ON(!kacpid_wq); BUG_ON(!kacpid_wq);
BUG_ON(!kacpi_notify_wq); BUG_ON(!kacpi_notify_wq);
BUG_ON(!kacpi_hotplug_wq); BUG_ON(!kacpi_hotplug_wq);