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Some fixes for SRCU in the LinuxKPI.

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- Make sure to use READ_ONCE() when deferring variables.
- Remove superfluous zero initializer.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2020-04-08 16:07:57 +00:00
parent bd88e5f28f
commit 61d82b0794
1 changed files with 6 additions and 3 deletions
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9
sys/compat/linuxkpi/common/include/linux/srcu.h
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@ -1,5 +1,5 @@
/*-
* Copyright (c) 2015-2017 Mellanox Technologies, Ltd.
* Copyright (c) 2015-2020 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -29,13 +29,16 @@
#ifndef _LINUX_SRCU_H_
#define _LINUX_SRCU_H_
#include <linux/compiler.h>
struct srcu_struct {
};
#define srcu_dereference(ptr,srcu) ((__typeof(*(ptr)) *)(ptr))
#define srcu_dereference(p, srcu) \
((__typeof(*(p)) *)READ_ONCE(p))
#define DEFINE_STATIC_SRCU(name) \
static struct srcu_struct name = {}
static struct srcu_struct name
/* prototypes */