diff options
| author | riastradh <riastradh@NetBSD.org> | 2021-12-19 01:37:27 +0000 |
|---|---|---|
| committer | riastradh <riastradh@NetBSD.org> | 2021-12-19 01:37:27 +0000 |
| commit | 136db9ec84df8ffd5a9854e58985f8d132d6875a (patch) | |
| tree | 6e39496266060763c736fa88211e0e72bbbe22b3 /sys/external/bsd/common/include/linux | |
| parent | 0223d4f4d6667cc6b99444fa42cc2b1eb31f483a (diff) | |
Move Linux SRCU to common.
Diffstat (limited to 'sys/external/bsd/common/include/linux')
| -rw-r--r-- | sys/external/bsd/common/include/linux/srcu.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sys/external/bsd/common/include/linux/srcu.h b/sys/external/bsd/common/include/linux/srcu.h new file mode 100644 index 00000000000..446cc7a5c65 --- /dev/null +++ b/sys/external/bsd/common/include/linux/srcu.h @@ -0,0 +1,59 @@ +/* $NetBSD: srcu.h,v 1.1 2021/12/19 01:37:27 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_SRCU_H_ +#define _LINUX_SRCU_H_ + +#include <sys/types.h> +#include <sys/condvar.h> +#include <sys/mutex.h> + +struct lwp; +struct percpu; + +struct srcu { + struct percpu *srcu_percpu; /* struct srcu_cpu */ + kmutex_t srcu_lock; + kcondvar_t srcu_cv; + struct lwp *srcu_sync; + int64_t srcu_total; + volatile unsigned srcu_gen; +}; + +void srcu_init(struct srcu *, const char *); +void srcu_fini(struct srcu *); + +int srcu_read_lock(struct srcu *); +void srcu_read_unlock(struct srcu *, int); + +void synchronize_srcu(struct srcu *); + +#endif /* _LINUX_SRCU_H_ */ |
