ACPI: created a dedicated workqueue for notify() execution (37605a69) · Commits · e / devices / android_kernel_xiaomi_sm6125

drivers/acpi/osl.c

+13 −21

Original line number	Original line	Diff line number	Diff line
	@@ -73,6 +73,7 @@ static unsigned int acpi_irq_irq;
	static acpi_osd_handler acpi_irq_handler;		static acpi_osd_handler acpi_irq_handler;
	static void *acpi_irq_context;		static void *acpi_irq_context;
	static struct workqueue_struct *kacpid_wq;		static struct workqueue_struct *kacpid_wq;
			static struct workqueue_struct *kacpi_notify_wq;

	acpi_status acpi_os_initialize(void)		acpi_status acpi_os_initialize(void)
	{		{
	@@ -91,8 +92,9 @@ acpi_status acpi_os_initialize1(void)
	return AE_NULL_ENTRY;		return AE_NULL_ENTRY;
	}		}
	kacpid_wq = create_singlethread_workqueue("kacpid");		kacpid_wq = create_singlethread_workqueue("kacpid");
			kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
	BUG_ON(!kacpid_wq);		BUG_ON(!kacpid_wq);
			BUG_ON(!kacpi_notify_wq);
	return AE_OK;		return AE_OK;
	}		}

	@@ -104,6 +106,7 @@ acpi_status acpi_os_terminate(void)
	}		}

	destroy_workqueue(kacpid_wq);		destroy_workqueue(kacpid_wq);
			destroy_workqueue(kacpi_notify_wq);

	return AE_OK;		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)		static void acpi_os_execute_deferred(void *context)
	{		{
	struct acpi_os_dpc *dpc = NULL;		struct acpi_os_dpc dpc = (struct acpi_os_dpc )context;


	dpc = (struct acpi_os_dpc *)context;
	if (!dpc) {		if (!dpc) {
	printk(KERN_ERR PREFIX "Invalid (NULL) context\n");		printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
	return;		return;
	@@ -604,14 +604,12 @@ acpi_status acpi_os_execute(acpi_execute_type type,
	struct acpi_os_dpc *dpc;		struct acpi_os_dpc *dpc;
	struct work_struct *task;		struct work_struct *task;

	ACPI_FUNCTION_TRACE("os_queue_for_execution");

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC,		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
	"Scheduling function [%p(%p)] for deferred execution.\n",		"Scheduling function [%p(%p)] for deferred execution.\n",
	function, context));		function, context));

	if (!function)		if (!function)
	return_ACPI_STATUS(AE_BAD_PARAMETER);		return AE_BAD_PARAMETER;

	/*		/*
	* Allocate/initialize DPC structure. Note that this memory will be		* 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.		* from the same memory.
	*/		*/

	dpc =		dpc = kmalloc(sizeof(struct acpi_os_dpc) +
	kmalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct),		sizeof(struct work_struct), GFP_ATOMIC);
	GFP_ATOMIC);
	if (!dpc)		if (!dpc)
	return_ACPI_STATUS(AE_NO_MEMORY);		return AE_NO_MEMORY;

	dpc->function = function;		dpc->function = function;
	dpc->context = context;		dpc->context = context;

	task = (void *)(dpc + 1);		task = (void *)(dpc + 1);
	INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc);		INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc);
			if (!queue_work((type == OSL_NOTIFY_HANDLER)?
	if (!queue_work(kacpid_wq, task)) {		kacpi_notify_wq : kacpid_wq, task)) {
	ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
	"Call to queue_work() failed.\n"));
	kfree(dpc);
	status = AE_ERROR;		status = AE_ERROR;
			kfree(dpc);
	}		}
			return status;
	return_ACPI_STATUS(status);
	}		}

	EXPORT_SYMBOL(acpi_os_execute);		EXPORT_SYMBOL(acpi_os_execute);