powerpc/pseries: Fix dlpar compile warning without CONFIG_PROC_DEVICETREE
[linux-2.6/next.git] / kernel / slow-work.h
blob321f3c59d7324f4100629b55111bb02b05c70161
1 /* Slow work private definitions
3 * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
12 #define SLOW_WORK_CULL_TIMEOUT (5 * HZ) /* cull threads 5s after running out of
13 * things to do */
14 #define SLOW_WORK_OOM_TIMEOUT (5 * HZ) /* can't start new threads for 5s after
15 * OOM */
17 #define SLOW_WORK_THREAD_LIMIT 255 /* abs maximum number of slow-work threads */
20 * slow-work.c
22 #ifdef CONFIG_SLOW_WORK_DEBUG
23 extern struct slow_work *slow_work_execs[];
24 extern pid_t slow_work_pids[];
25 extern rwlock_t slow_work_execs_lock;
26 #endif
28 extern struct list_head slow_work_queue;
29 extern struct list_head vslow_work_queue;
30 extern spinlock_t slow_work_queue_lock;
33 * slow-work-debugfs.c
35 #ifdef CONFIG_SLOW_WORK_DEBUG
36 extern const struct file_operations slow_work_runqueue_fops;
38 extern void slow_work_new_thread_desc(struct slow_work *, struct seq_file *);
39 #endif
42 * Helper functions
44 static inline void slow_work_set_thread_pid(int id, pid_t pid)
46 #ifdef CONFIG_SLOW_WORK_PROC
47 slow_work_pids[id] = pid;
48 #endif
51 static inline void slow_work_mark_time(struct slow_work *work)
53 #ifdef CONFIG_SLOW_WORK_PROC
54 work->mark = CURRENT_TIME;
55 #endif
58 static inline void slow_work_begin_exec(int id, struct slow_work *work)
60 #ifdef CONFIG_SLOW_WORK_PROC
61 slow_work_execs[id] = work;
62 #endif
65 static inline void slow_work_end_exec(int id, struct slow_work *work)
67 #ifdef CONFIG_SLOW_WORK_PROC
68 write_lock(&slow_work_execs_lock);
69 slow_work_execs[id] = NULL;
70 write_unlock(&slow_work_execs_lock);
71 #endif