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ACPI: created a dedicated workqueue for notify() execution

Browse Source 
http://bugzilla.kernel.org/show_bug.cgi?id=5534#c160

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexey Y. Starikovskiy 2006-09-26 04:20:47 -04:00 committed by Len Brown
parent fcfc638c6b
commit 37605a6900
1 changed files with 13 additions and 21 deletions
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34
drivers/acpi/osl.c
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@ -73,6 +73,7 @@ static unsigned int acpi_irq_irq;
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
static struct workqueue_struct *kacpi_notify_wq;
acpi_status acpi_os_initialize(void)
{
@ -91,8 +92,9 @@ acpi_status acpi_os_initialize1(void)
return AE_NULL_ENTRY;
}
kacpid_wq = create_singlethread_workqueue("kacpid");
kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
BUG_ON(!kacpid_wq);
BUG_ON(!kacpi_notify_wq);
return AE_OK;
}
@ -104,6 +106,7 @@ acpi_status acpi_os_terminate(void)
}
destroy_workqueue(kacpid_wq);
destroy_workqueue(kacpi_notify_wq);
return AE_OK;
}
@ -566,10 +569,7 @@ void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */
static void acpi_os_execute_deferred(void *context)
{
struct acpi_os_dpc *dpc = NULL;
dpc = (struct acpi_os_dpc *)context;
struct acpi_os_dpc *dpc = (struct acpi_os_dpc *)context;
if (!dpc) {
printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
return;
@ -604,14 +604,12 @@ acpi_status acpi_os_execute(acpi_execute_type type,
struct acpi_os_dpc *dpc;
struct work_struct *task;
ACPI_FUNCTION_TRACE("os_queue_for_execution");
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Scheduling function [%p(%p)] for deferred execution.\n",
function, context));
if (!function)
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
/*
* Allocate/initialize DPC structure. Note that this memory will be
@ -624,26 +622,20 @@ acpi_status acpi_os_execute(acpi_execute_type type,
* from the same memory.
*/
dpc =
kmalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct),
GFP_ATOMIC);
dpc = kmalloc(sizeof(struct acpi_os_dpc) +
sizeof(struct work_struct), GFP_ATOMIC);
if (!dpc)
return_ACPI_STATUS(AE_NO_MEMORY);
return AE_NO_MEMORY;
dpc->function = function;
dpc->context = context;
task = (void *)(dpc + 1);
INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc);
if (!queue_work(kacpid_wq, task)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Call to queue_work() failed.\n"));
kfree(dpc);
if (!queue_work((type == OSL_NOTIFY_HANDLER)?
kacpi_notify_wq : kacpid_wq, task)) {
status = AE_ERROR;
kfree(dpc);
}
return_ACPI_STATUS(status);
return status;
}
EXPORT_SYMBOL(acpi_os_execute);