xref: /dragonfly/sys/dev/drm/include/asm/current.h (revision 0e32b8c5)
1d6aa1cc5SFrançois Tigeot /*
21e8d33eeSFrançois Tigeot  * Copyright (c) 2018-2019 François Tigeot <ftigeot@wolfpond.org>
3d6aa1cc5SFrançois Tigeot  * All rights reserved.
4d6aa1cc5SFrançois Tigeot  *
5d6aa1cc5SFrançois Tigeot  * Redistribution and use in source and binary forms, with or without
6d6aa1cc5SFrançois Tigeot  * modification, are permitted provided that the following conditions
7d6aa1cc5SFrançois Tigeot  * are met:
8d6aa1cc5SFrançois Tigeot  * 1. Redistributions of source code must retain the above copyright
9d6aa1cc5SFrançois Tigeot  *    notice unmodified, this list of conditions, and the following
10d6aa1cc5SFrançois Tigeot  *    disclaimer.
11d6aa1cc5SFrançois Tigeot  * 2. Redistributions in binary form must reproduce the above copyright
12d6aa1cc5SFrançois Tigeot  *    notice, this list of conditions and the following disclaimer in the
13d6aa1cc5SFrançois Tigeot  *    documentation and/or other materials provided with the distribution.
14d6aa1cc5SFrançois Tigeot  *
15d6aa1cc5SFrançois Tigeot  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16d6aa1cc5SFrançois Tigeot  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17d6aa1cc5SFrançois Tigeot  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18d6aa1cc5SFrançois Tigeot  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19d6aa1cc5SFrançois Tigeot  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20d6aa1cc5SFrançois Tigeot  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21d6aa1cc5SFrançois Tigeot  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22d6aa1cc5SFrançois Tigeot  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23d6aa1cc5SFrançois Tigeot  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24d6aa1cc5SFrançois Tigeot  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25d6aa1cc5SFrançois Tigeot  */
26d6aa1cc5SFrançois Tigeot 
27d6aa1cc5SFrançois Tigeot #ifndef _ASM_CURRENT_H_
28d6aa1cc5SFrançois Tigeot #define _ASM_CURRENT_H_
29d6aa1cc5SFrançois Tigeot 
30*0e32b8c5SMatthew Dillon struct task_struct;
31*0e32b8c5SMatthew Dillon struct mm_struct;
32*0e32b8c5SMatthew Dillon struct thread;
33*0e32b8c5SMatthew Dillon struct proc;
34*0e32b8c5SMatthew Dillon 
35*0e32b8c5SMatthew Dillon struct task_struct *linux_task_alloc(struct thread *td);
36*0e32b8c5SMatthew Dillon void linux_task_drop(struct thread *td);
37*0e32b8c5SMatthew Dillon void linux_proc_drop(struct proc *p);
38*0e32b8c5SMatthew Dillon void linux_mm_drop(struct mm_struct *mm);
39*0e32b8c5SMatthew Dillon 
40*0e32b8c5SMatthew Dillon #define current	({						\
41*0e32b8c5SMatthew Dillon 	struct task_struct *__task;				\
42*0e32b8c5SMatthew Dillon 								\
43*0e32b8c5SMatthew Dillon 	if ((__task = curthread->td_linux_task) == NULL)	\
44*0e32b8c5SMatthew Dillon 		__task = linux_task_alloc(curthread);		\
45*0e32b8c5SMatthew Dillon 	__task; })
461e8d33eeSFrançois Tigeot 
47d6aa1cc5SFrançois Tigeot #endif	/* _ASM_CURRENT_H_ */
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