4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
35 #ifndef __LIBCFS_DARWIN_LIBCFS_H__
36 #define __LIBCFS_DARWIN_LIBCFS_H__
38 #ifndef __LIBCFS_LIBCFS_H__
39 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
42 #include <mach/mach_types.h>
43 #include <sys/errno.h>
45 #include <libcfs/darwin/darwin-types.h>
46 #include <libcfs/darwin/darwin-time.h>
47 #include <libcfs/darwin/darwin-prim.h>
48 #include <libcfs/darwin/darwin-mem.h>
49 #include <libcfs/darwin/darwin-lock.h>
50 #include <libcfs/darwin/darwin-fs.h>
51 #include <libcfs/darwin/darwin-tcpip.h>
52 #include <libcfs/darwin/kp30.h>
55 # include <sys/types.h>
56 # include <sys/time.h>
57 # define do_gettimeofday(tv) microuptime(tv)
59 # include <sys/time.h>
60 # define do_gettimeofday(tv) gettimeofday(tv, NULL);
61 typedef unsigned long long cycles_t;
64 #define __cpu_to_le64(x) OSSwapHostToLittleInt64(x)
65 #define __cpu_to_le32(x) OSSwapHostToLittleInt32(x)
66 #define __cpu_to_le16(x) OSSwapHostToLittleInt16(x)
68 #define __le16_to_cpu(x) OSSwapLittleToHostInt16(x)
69 #define __le32_to_cpu(x) OSSwapLittleToHostInt32(x)
70 #define __le64_to_cpu(x) OSSwapLittleToHostInt64(x)
72 #define cpu_to_le64(x) __cpu_to_le64(x)
73 #define cpu_to_le32(x) __cpu_to_le32(x)
74 #define cpu_to_le16(x) __cpu_to_le16(x)
76 #define le64_to_cpu(x) __le64_to_cpu(x)
77 #define le32_to_cpu(x) __le32_to_cpu(x)
78 #define le16_to_cpu(x) __le16_to_cpu(x)
80 #define __swab16(x) OSSwapInt16(x)
81 #define __swab32(x) OSSwapInt32(x)
82 #define __swab64(x) OSSwapInt64(x)
83 #define __swab16s(x) do { *(x) = __swab16(*(x)); } while (0)
84 #define __swab32s(x) do { *(x) = __swab32(*(x)); } while (0)
85 #define __swab64s(x) do { *(x) = __swab64(*(x)); } while (0)
89 # include <sys/systm.h>
90 # include <pexpert/pexpert.h>
92 # define THREAD_SIZE 8192
94 # define THREAD_SIZE 8192
96 #define LUSTRE_TRACE_SIZE (THREAD_SIZE >> 5)
98 #define CHECK_STACK(msgdata, mask, cdls) do {} while(0)
99 #define CDEBUG_STACK() (0L)
101 /* Darwin has defined RETURN, so we have to undef it in lustre */
107 * When this is enabled debugging messages are indented according to the
108 * current "nesting level". Nesting level in increased when ENTRY macro
109 * is executed, and decreased on EXIT and RETURN.
112 #define ENTRY_NESTING_SUPPORT (0)
115 #if ENTRY_NESTING_SUPPORT
118 * Currently ENTRY_NESTING_SUPPORT is only supported for XNU port. Basic
119 * idea is to keep per-thread pointer to small data structure (struct
120 * cfs_debug_data) describing current nesting level. In XNU unused
121 * proc->p_wmegs field in hijacked for this. On Linux
122 * current->journal_info can be used. In user space
123 * pthread_{g,s}etspecific().
125 * ENTRY macro allocates new cfs_debug_data on stack, and installs it as
126 * a current nesting level, storing old data in cfs_debug_data it just
129 * EXIT pops old value back.
134 * One problem with this approach is that there is a lot of code that
135 * does ENTRY and then escapes scope without doing EXIT/RETURN. In this
136 * case per-thread current nesting level pointer is dangling (it points
137 * to the stack area that is possible already overridden). To detect
138 * such cases, we add two magic fields to the cfs_debug_data and check
139 * them whenever current nesting level pointer is dereferenced. While
140 * looking flaky this works because stack is always consumed
144 CDD_MAGIC1 = 0x02128506,
145 CDD_MAGIC2 = 0x42424242
148 struct cfs_debug_data {
150 struct cfs_debug_data *parent;
155 void __entry_nesting(struct cfs_debug_data *child);
156 void __exit_nesting(struct cfs_debug_data *child);
157 unsigned int __current_nesting_level(void);
159 #define ENTRY_NESTING \
160 struct cfs_debug_data __cdd = { .magic1 = CDD_MAGIC1, \
162 .nesting_level = 0, \
163 .magic2 = CDD_MAGIC2 }; \
164 __entry_nesting(&__cdd);
166 #define EXIT_NESTING __exit_nesting(&__cdd)
168 /* ENTRY_NESTING_SUPPORT */
171 #define ENTRY_NESTING do {;} while (0)
172 #define EXIT_NESTING do {;} while (0)
173 #define __current_nesting_level() (0)
175 /* ENTRY_NESTING_SUPPORT */
178 #define LUSTRE_LNET_PID 12345
180 #define _XNU_LIBCFS_H
183 * Platform specific declarations for cfs_curproc API (libcfs/curproc.h)
185 * Implementation is in darwin-curproc.c
187 #define CFS_CURPROC_COMM_MAX MAXCOMLEN
189 * XNU has no capabilities
191 typedef __u32 cfs_kernel_cap_t;
195 /* if you change this, update darwin-util.c:cfs_stack_trace_fill() */
196 CFS_STACK_TRACE_DEPTH = 16
199 struct cfs_stack_trace {
200 void *frame[CFS_STACK_TRACE_DEPTH];
203 #define printk(format, args...) printf(format, ## args)
209 #endif /* __KERNEL__ */
211 #endif /* _XNU_LIBCFS_H */