1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2017 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_COMPAT_H_ 30 #define _LINUXKPI_LINUX_COMPAT_H_ 31 32 #include <sys/param.h> 33 #include <sys/proc.h> 34 #include <sys/malloc.h> 35 36 #if defined(__aarch64__) || defined(__arm__) || defined(__amd64__) || \ 37 defined(__i386__) || defined(__powerpc64__) 38 #define LKPI_HAVE_FPU_CTX 39 #endif 40 41 struct domainset; 42 struct thread; 43 struct task_struct; 44 45 extern int linux_alloc_current(struct thread *, int flags); 46 extern void linux_free_current(struct task_struct *); 47 extern struct domainset *linux_get_vm_domain_set(int node); 48 extern int linux_set_fpu_ctx(struct task_struct *); 49 50 static inline void 51 linux_set_current(struct thread *td) 52 { 53 if (__predict_false(td->td_lkpi_task == NULL)) 54 lkpi_alloc_current(td, M_WAITOK); 55 } 56 57 static inline int 58 linux_set_current_flags(struct thread *td, int flags) 59 { 60 if (__predict_false(td->td_lkpi_task == NULL)) 61 return (lkpi_alloc_current(td, flags)); 62 return (0); 63 } 64 65 #define compat_ptr(x) ((void *)(uintptr_t)x) 66 #define ptr_to_compat(x) ((uintptr_t)x) 67 68 #endif /* _LINUXKPI_LINUX_COMPAT_H_ */ 69