#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/nmi.h>
-#include <linux/kthread.h>
#include <acpi/acpi.h>
#include <asm/io.h>
#include <acpi/acpi_bus.h>
struct acpi_os_dpc {
acpi_osd_exec_callback function;
void *context;
+ struct work_struct work;
};
#ifdef CONFIG_ACPI_CUSTOM_DSDT
#endif
}
-
-extern int acpi_in_resume;
-void *acpi_os_allocate(acpi_size size)
-{
- if (acpi_in_resume)
- return kmalloc(size, GFP_ATOMIC);
- else
- return kmalloc(size, GFP_KERNEL);
-}
-
acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr)
{
if (efi_enabled) {
return AE_OK;
}
-static irqreturn_t acpi_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t acpi_irq(int irq, void *dev_id)
{
return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE;
}
acpi_irq_handler = handler;
acpi_irq_context = context;
- if (request_irq(irq, acpi_irq, SA_SHIRQ, "acpi", acpi_irq)) {
+ if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) {
printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq);
return AE_NOT_ACQUIRED;
}
acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number);
}
-static void acpi_os_execute_deferred(void *context)
+static void acpi_os_execute_deferred(struct work_struct *work)
{
- struct acpi_os_dpc *dpc = NULL;
-
-
- dpc = (struct acpi_os_dpc *)context;
+ struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
if (!dpc) {
printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
return;
return;
}
-static int acpi_os_execute_thread(void *context)
-{
- struct acpi_os_dpc *dpc = (struct acpi_os_dpc *)context;
- if (dpc) {
- dpc->function(dpc->context);
- kfree(dpc);
- }
- do_exit(0);
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_os_execute
{
acpi_status status = AE_OK;
struct acpi_os_dpc *dpc;
- struct work_struct *task;
- struct task_struct *p;
+
+ 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 AE_BAD_PARAMETER;
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+
/*
* Allocate/initialize DPC structure. Note that this memory will be
- * freed by the callee. The kernel handles the tq_struct list in a
+ * freed by the callee. The kernel handles the work_struct list in a
* way that allows us to also free its memory inside the callee.
* Because we may want to schedule several tasks with different
* parameters we can't use the approach some kernel code uses of
- * having a static tq_struct.
- * We can save time and code by allocating the DPC and tq_structs
- * from the same memory.
+ * having a static work_struct.
*/
- if (type == OSL_NOTIFY_HANDLER) {
- dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_KERNEL);
- } else {
- dpc = kmalloc(sizeof(struct acpi_os_dpc) +
- sizeof(struct work_struct), GFP_ATOMIC);
- }
+
+ dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
if (!dpc)
- return AE_NO_MEMORY;
+ return_ACPI_STATUS(AE_NO_MEMORY);
+
dpc->function = function;
dpc->context = context;
- if (type == OSL_NOTIFY_HANDLER) {
- p = kthread_create(acpi_os_execute_thread, dpc, "kacpid_notify");
- if (!IS_ERR(p)) {
- wake_up_process(p);
- } else {
- status = AE_NO_MEMORY;
- kfree(dpc);
- }
- } else {
- task = (void *)(dpc + 1);
- INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc);
- if (!queue_work(kacpid_wq, task)) {
- status = AE_ERROR;
- kfree(dpc);
- }
+ INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+ if (!queue_work(kacpid_wq, &dpc->work)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Call to queue_work() failed.\n"));
+ kfree(dpc);
+ status = AE_ERROR;
}
- return status;
+
+ return_ACPI_STATUS(status);
}
EXPORT_SYMBOL(acpi_os_execute);
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n",
handle, units, timeout));
+ /*
+ * This can be called during resume with interrupts off.
+ * Like boot-time, we should be single threaded and will
+ * always get the lock if we try -- timeout or not.
+ * If this doesn't succeed, then we will oops courtesy of
+ * might_sleep() in down().
+ */
+ if (!down_trylock(sem))
+ return AE_OK;
+
switch (timeout) {
/*
* No Wait:
acpi_status acpi_os_delete_cache(acpi_cache_t * cache)
{
- (void)kmem_cache_destroy(cache);
+ kmem_cache_destroy(cache);
return (AE_OK);
}
return (AE_OK);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_os_acquire_object
- *
- * PARAMETERS: Cache - Handle to cache object
- * ReturnObject - Where the object is returned
- *
- * RETURN: Status
- *
- * DESCRIPTION: Return a zero-filled object.
- *
- ******************************************************************************/
-
-void *acpi_os_acquire_object(acpi_cache_t * cache)
-{
- void *object = kmem_cache_zalloc(cache, GFP_KERNEL);
- WARN_ON(!object);
- return object;
-}
-
/******************************************************************************
*
* FUNCTION: acpi_os_validate_interface
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff