hardirq.h revision 1.2.2.2
1 1.2.2.2 pgoyette /* $NetBSD: hardirq.h,v 1.2.2.2 2018/09/06 06:56:36 pgoyette Exp $ */ 2 1.2.2.2 pgoyette 3 1.2.2.2 pgoyette /*- 4 1.2.2.2 pgoyette * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 1.2.2.2 pgoyette * All rights reserved. 6 1.2.2.2 pgoyette * 7 1.2.2.2 pgoyette * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 pgoyette * by Taylor R. Campbell. 9 1.2.2.2 pgoyette * 10 1.2.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 pgoyette * modification, are permitted provided that the following conditions 12 1.2.2.2 pgoyette * are met: 13 1.2.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 pgoyette * documentation and/or other materials provided with the distribution. 18 1.2.2.2 pgoyette * 19 1.2.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.2.2 pgoyette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.2.2 pgoyette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.2.2 pgoyette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.2.2 pgoyette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.2.2 pgoyette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.2.2 pgoyette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.2.2 pgoyette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.2.2 pgoyette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.2.2 pgoyette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.2.2 pgoyette * POSSIBILITY OF SUCH DAMAGE. 30 1.2.2.2 pgoyette */ 31 1.2.2.2 pgoyette 32 1.2.2.2 pgoyette #ifndef _LINUX_HARDIRQ_H_ 33 1.2.2.2 pgoyette #define _LINUX_HARDIRQ_H_ 34 1.2.2.2 pgoyette 35 1.2.2.2 pgoyette #include <sys/types.h> 36 1.2.2.2 pgoyette #include <sys/kernel.h> 37 1.2.2.2 pgoyette #include <sys/null.h> 38 1.2.2.2 pgoyette #include <sys/xcall.h> 39 1.2.2.2 pgoyette 40 1.2.2.2 pgoyette static inline void 41 1.2.2.2 pgoyette synchronize_irq_xc(void *a, void *b) 42 1.2.2.2 pgoyette { 43 1.2.2.2 pgoyette } 44 1.2.2.2 pgoyette 45 1.2.2.2 pgoyette /* 46 1.2.2.2 pgoyette * synchronize(irq) 47 1.2.2.2 pgoyette * 48 1.2.2.2 pgoyette * Wait for all interrupt handlers servicing irq to complete on 49 1.2.2.2 pgoyette * all CPUs. We just do a low-priority cross-call broadcast to 50 1.2.2.2 pgoyette * all CPUs, which can't run until interrupt handlers are done 51 1.2.2.2 pgoyette * running. 52 1.2.2.2 pgoyette */ 53 1.2.2.2 pgoyette static inline void 54 1.2.2.2 pgoyette synchronize_irq(int irq) 55 1.2.2.2 pgoyette { 56 1.2.2.2 pgoyette 57 1.2.2.2 pgoyette if (!cold) 58 1.2.2.2 pgoyette xc_wait(xc_broadcast(0, synchronize_irq_xc, NULL, NULL)); 59 1.2.2.2 pgoyette } 60 1.2.2.2 pgoyette 61 1.2.2.2 pgoyette #endif /* _LINUX_HARDIRQ_H_ */ 62
Indexes created Thu Oct 02 07:10:07 GMT 2025