/* Slow work private definitions * * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #define SLOW_WORK_CULL_TIMEOUT (5 * HZ)	/* cull threads 5s after running out of					 * things to do */#define SLOW_WORK_OOM_TIMEOUT (5 * HZ)	/* can't start new threads for 5s after					 * OOM */ #define SLOW_WORK_THREAD_LIMIT	255	/* abs maximum number of slow-work threads */ /* * slow-work.c */#ifdef CONFIG_SLOW_WORK_DEBUGextern struct slow_work *slow_work_execs[];extern pid_t slow_work_pids[];extern rwlock_t slow_work_execs_lock;#endif extern struct list_head slow_work_queue;extern struct list_head vslow_work_queue;extern spinlock_t slow_work_queue_lock; /* * slow-work-debugfs.c */#ifdef CONFIG_SLOW_WORK_DEBUGextern const struct file_operations slow_work_runqueue_fops; extern void slow_work_new_thread_desc(struct slow_work *, struct seq_file *);#endif /* * Helper functions */static inline void slow_work_set_thread_pid(int id, pid_t pid){#ifdef CONFIG_SLOW_WORK_DEBUG	slow_work_pids[id] = pid;#endif} static inline void slow_work_mark_time(struct slow_work *work){#ifdef CONFIG_SLOW_WORK_DEBUG	work->mark = CURRENT_TIME;#endif} static inline void slow_work_begin_exec(int id, struct slow_work *work){#ifdef CONFIG_SLOW_WORK_DEBUG	slow_work_execs[id] = work;#endif} static inline void slow_work_end_exec(int id, struct slow_work *work){#ifdef CONFIG_SLOW_WORK_DEBUG	write_lock(&slow_work_execs_lock);	slow_work_execs[id] = NULL;	write_unlock(&slow_work_execs_lock);#endif}