1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #ifndef _LINUXKPI_LINUX_HARDIRQ_H_ 30 #define _LINUXKPI_LINUX_HARDIRQ_H_ 31 32 #include <linux/types.h> 33 #include <linux/lockdep.h> 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/interrupt.h> 38 39 #define synchronize_irq(irq) _intr_drain((irq)) 40 41 /* 42 * FIXME: In the i915 driver's `intel_engine_cs.c` file, 43 * `synchronize_hardirq()` was replaced by `synchronize_rcu()` with the 44 * following comment: 45 * "Is it enough to wait that all cpu have context-switched?" 46 * 47 * See commit f6d50b7af554e21c380486d6f41c8537b265c777 in drm-kmod. 48 */ 49 #define synchronize_hardirq(irq) _intr_drain((irq)) 50 51 #endif /* _LINUXKPI_LINUX_HARDIRQ_H_ */ 52