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 struct domainset; 37 struct thread; 38 struct task_struct; 39 40 extern int linux_alloc_current(struct thread *, int flags); 41 extern void linux_free_current(struct task_struct *); 42 extern struct domainset *linux_get_vm_domain_set(int node); 43 44 #define __current_unallocated(td) \ 45 __predict_false((td)->td_lkpi_task == NULL) 46 47 static inline void 48 linux_set_current(struct thread *td) 49 { 50 if (__current_unallocated(td)) 51 lkpi_alloc_current(td, M_WAITOK); 52 } 53 54 static inline int 55 linux_set_current_flags(struct thread *td, int flags) 56 { 57 if (__current_unallocated(td)) 58 return (lkpi_alloc_current(td, flags)); 59 return (0); 60 } 61 62 #define compat_ptr(x) ((void *)(uintptr_t)x) 63 #define ptr_to_compat(x) ((uintptr_t)x) 64 65 typedef void fpu_safe_exec_cb_t(void *ctx); 66 void lkpi_fpu_safe_exec(fpu_safe_exec_cb_t func, void *ctx); 67 68 #endif /* _LINUXKPI_LINUX_COMPAT_H_ */ 69