mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
f13a48bd79
Move slow_work's debugging proc file to debugfs. Signed-off-by: David Howells <dhowells@redhat.com> Requested-and-acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/* 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_DEBUG
|
|
extern 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_DEBUG
|
|
extern 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_PROC
|
|
slow_work_pids[id] = pid;
|
|
#endif
|
|
}
|
|
|
|
static inline void slow_work_mark_time(struct slow_work *work)
|
|
{
|
|
#ifdef CONFIG_SLOW_WORK_PROC
|
|
work->mark = CURRENT_TIME;
|
|
#endif
|
|
}
|
|
|
|
static inline void slow_work_begin_exec(int id, struct slow_work *work)
|
|
{
|
|
#ifdef CONFIG_SLOW_WORK_PROC
|
|
slow_work_execs[id] = work;
|
|
#endif
|
|
}
|
|
|
|
static inline void slow_work_end_exec(int id, struct slow_work *work)
|
|
{
|
|
#ifdef CONFIG_SLOW_WORK_PROC
|
|
write_lock(&slow_work_execs_lock);
|
|
slow_work_execs[id] = NULL;
|
|
write_unlock(&slow_work_execs_lock);
|
|
#endif
|
|
}
|