diff options
| author | riastradh <riastradh@NetBSD.org> | 2021-12-19 01:33:17 +0000 |
|---|---|---|
| committer | riastradh <riastradh@NetBSD.org> | 2021-12-19 01:33:17 +0000 |
| commit | decf3c7708ec68e13a5b167d6eecd41c72092dbe (patch) | |
| tree | 307298fda5328e6a2106d98a1eccdfa869ef1881 /sys/external/bsd/drm2/include/linux | |
| parent | 13103e48efea28257b06e91fbf300e0e4de4a2ec (diff) | |
Move Linux RCU to common.
Diffstat (limited to 'sys/external/bsd/drm2/include/linux')
| -rw-r--r-- | sys/external/bsd/drm2/include/linux/rcupdate.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/sys/external/bsd/drm2/include/linux/rcupdate.h b/sys/external/bsd/drm2/include/linux/rcupdate.h deleted file mode 100644 index 276c353112f..00000000000 --- a/sys/external/bsd/drm2/include/linux/rcupdate.h +++ /dev/null @@ -1,112 +0,0 @@ -/* $NetBSD: rcupdate.h,v 1.13 2021/12/19 01:22:51 riastradh Exp $ */ - -/*- - * Copyright (c) 2018 The NetBSD Foundation, Inc. - * All rights reserved. - * - * This code is derived from software contributed to The NetBSD Foundation - * by Taylor R. Campbell. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _LINUX_RCUPDATE_H_ -#define _LINUX_RCUPDATE_H_ - -#include <sys/atomic.h> -#include <sys/cdefs.h> -#include <sys/systm.h> - -#define __rcu - -#define RCU_INIT_POINTER(P, V) ((P) = (V)) - -#define rcu_assign_pointer(P, V) do { \ - __typeof__(*(P)) *__rcu_assign_pointer_tmp = (V); \ - membar_exit(); \ - (P) = __rcu_assign_pointer_tmp; \ -} while (0) - -#define rcu_dereference(P) ({ \ - __typeof__(*(P)) *__rcu_dereference_tmp = (P); \ - membar_datadep_consumer(); \ - __rcu_dereference_tmp; \ -}) - -#define rcu_dereference_raw rcu_dereference - -#define rcu_dereference_protected(P, C) ({ \ - WARN_ON(!(C)); \ - (P); \ -}) - -#define rcu_access_pointer(P) ({ \ - __typeof__(*(P)) *__rcu_access_pointer_tmp = (P); \ - __insn_barrier(); \ - __rcu_access_pointer_tmp; \ -}) - -/* kill_dependency */ -#define rcu_pointer_handoff(P) (P) - -struct rcu_head { - union { - void (*callback)(struct rcu_head *); - void *obj; - } rcuh_u; - struct rcu_head *rcuh_next; -}; - -#define _kfree_rcu linux__kfree_rcu -#define call_rcu linux_call_rcu -#define rcu_barrier linux_rcu_barrier -#define synchronize_rcu linux_synchronize_rcu - -int linux_rcu_gc_init(void); -void linux_rcu_gc_fini(void); - -void call_rcu(struct rcu_head *, void (*)(struct rcu_head *)); -void rcu_barrier(void); -void synchronize_rcu(void); - -void _kfree_rcu(struct rcu_head *, void *); - -static inline void -rcu_read_lock(void) -{ - - kpreempt_disable(); - __insn_barrier(); -} - -static inline void -rcu_read_unlock(void) -{ - - __insn_barrier(); - kpreempt_enable(); -} - -#define kfree_rcu(P, F) \ - _kfree_rcu(&(P)->F, (P)) - -#endif /* _LINUX_RCUPDATE_H_ */ |
