Quelle  wq.c

// SPDX-License-Identifier: GPL-2.0-only
#include "edac_module.h"

static struct workqueue_struct *wq;

bool edac_queue_work(struct delayed_work *work, unsigned long delay)
{
 return queue_delayed_work(wq, work, delay);
}
EXPORT_SYMBOL_GPL(edac_queue_work);

bool edac_mod_work(struct delayed_work *work, unsigned long delay)
{
 return mod_delayed_work(wq, work, delay);
}
EXPORT_SYMBOL_GPL(edac_mod_work);

bool edac_stop_work(struct delayed_work *work)
{
 bool ret;

 ret = cancel_delayed_work_sync(work);
 flush_workqueue(wq);

 return ret;
}
EXPORT_SYMBOL_GPL(edac_stop_work);

int edac_workqueue_setup(void)
{
 wq = alloc_ordered_workqueue("edac-poller", WQ_MEM_RECLAIM);
 if (!wq)
  return -ENODEV;
 else
  return 0;
}

void edac_workqueue_teardown(void)
{
 destroy_workqueue(wq);
 wq = NULL;
}