1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef __LIBCFS_LINUX_KP30_H__
38 #define __LIBCFS_LINUX_KP30_H__
41 #ifndef AUTOCONF_INCLUDED
42 # include <linux/config.h>
44 #include <linux/kernel.h>
46 #include <linux/string.h>
47 #include <linux/stat.h>
48 #include <linux/init.h>
49 #include <linux/errno.h>
50 #include <linux/unistd.h>
51 #include <asm/system.h>
52 #include <linux/kmod.h>
53 #include <linux/notifier.h>
55 #include <linux/miscdevice.h>
56 #include <linux/vmalloc.h>
57 #include <linux/time.h>
58 #include <linux/slab.h>
59 #include <linux/interrupt.h>
60 #include <linux/highmem.h>
61 #include <linux/module.h>
62 #include <linux/version.h>
63 #include <linux/smp_lock.h>
64 #include <asm/atomic.h>
65 #include <asm/uaccess.h>
66 #include <linux/rwsem.h>
67 #include <linux/proc_fs.h>
68 #include <linux/file.h>
69 #include <linux/smp.h>
70 #include <linux/ctype.h>
71 #include <linux/compiler.h>
73 # include <linux/mm_inline.h>
75 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
76 # include <linux/kallsyms.h>
77 # include <linux/moduleparam.h>
79 #include <linux/scatterlist.h>
81 #include <libcfs/linux/portals_compat25.h>
83 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
84 #define schedule_work schedule_task
85 #define prepare_work(wq,cb,cbdata) \
87 INIT_TQUEUE((wq), 0, 0); \
88 PREPARE_TQUEUE((wq), (cb), (cbdata)); \
91 #define PageUptodate Page_Uptodate
92 #define our_recalc_sigpending(current) recalc_sigpending(current)
93 #define cfs_num_online_cpus() smp_num_cpus
94 #define work_struct_t struct tq_struct
95 #define cfs_get_work_data(type,field,data) (data)
98 #ifdef HAVE_3ARGS_INIT_WORK
100 #define prepare_work(wq,cb,cbdata) \
102 INIT_WORK((wq), (void *)(cb), (void *)(cbdata)); \
105 #define cfs_get_work_data(type,field,data) (data)
109 #define prepare_work(wq,cb,cbdata) \
111 INIT_WORK((wq), (void *)(cb)); \
114 #define cfs_get_work_data(type,field,data) container_of(data,type,field)
118 #define cfs_num_online_cpus() num_online_cpus()
119 #define wait_on_page wait_on_page_locked
120 #define our_recalc_sigpending(current) recalc_sigpending()
121 #define strtok(a,b) strpbrk(a, b)
122 #define work_struct_t struct work_struct
124 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
127 #define LASSERT_SPIN_LOCKED(lock) LASSERT(spin_is_locked(lock))
128 #define LINVRNT_SPIN_LOCKED(lock) LINVRNT(spin_is_locked(lock))
130 #define LASSERT_SPIN_LOCKED(lock) do {(void)sizeof(lock);} while(0)
131 #define LINVRNT_SPIN_LOCKED(lock) do {(void)sizeof(lock);} while(0)
133 #define LASSERT_SEM_LOCKED(sem) LASSERT(down_trylock(sem) != 0)
135 #ifdef HAVE_SEM_COUNT_ATOMIC
136 #define SEM_COUNT(sem) (atomic_read(&(sem)->count))
138 #define SEM_COUNT(sem) ((sem)->count)
141 #define LIBCFS_PANIC(msg) panic(msg)
143 /* ------------------------------------------------------------------- */
145 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
147 #define PORTAL_SYMBOL_REGISTER(x) inter_module_register(#x, THIS_MODULE, &x)
148 #define PORTAL_SYMBOL_UNREGISTER(x) inter_module_unregister(#x)
150 #define PORTAL_SYMBOL_GET(x) ((typeof(&x))inter_module_get(#x))
151 #define PORTAL_SYMBOL_PUT(x) inter_module_put(#x)
153 #define PORTAL_MODULE_USE MOD_INC_USE_COUNT
154 #define PORTAL_MODULE_UNUSE MOD_DEC_USE_COUNT
157 #define PORTAL_SYMBOL_REGISTER(x)
158 #define PORTAL_SYMBOL_UNREGISTER(x)
160 #define PORTAL_SYMBOL_GET(x) symbol_get(x)
161 #define PORTAL_SYMBOL_PUT(x) symbol_put(x)
163 #define PORTAL_MODULE_USE try_module_get(THIS_MODULE)
164 #define PORTAL_MODULE_UNUSE module_put(THIS_MODULE)
168 /******************************************************************************/
169 /* Module parameter support */
170 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
171 # define CFS_MODULE_PARM(name, t, type, perm, desc) \
172 MODULE_PARM(name, t);\
173 MODULE_PARM_DESC(name, desc)
176 # define CFS_MODULE_PARM(name, t, type, perm, desc) \
177 module_param(name, type, perm);\
178 MODULE_PARM_DESC(name, desc)
181 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9))
182 # define CFS_SYSFS_MODULE_PARM 0 /* no sysfs module parameters */
184 # define CFS_SYSFS_MODULE_PARM 1 /* module parameters accessible via sysfs */
186 /******************************************************************************/
189 /* Use the special GNU C __attribute__ hack to have the compiler check the
190 * printf style argument string against the actual argument count and
194 # warning printf has been defined as a macro...
198 #endif /* __GNUC__ */
200 # define fprintf(a, format, b...) CDEBUG(D_OTHER, format , ## b)
201 # define printf(format, b...) CDEBUG(D_OTHER, format , ## b)
202 # define time(a) CURRENT_TIME
204 #ifndef num_possible_cpus
205 #define cfs_num_possible_cpus() NR_CPUS
207 #define cfs_num_possible_cpus() num_possible_cpus()
209 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
210 #define i_size_read(a) ((a)->i_size)
214 /******************************************************************************/
215 /* Light-weight trace
216 * Support for temporary event tracing with minimal Heisenberg effect. */
217 #define LWT_SUPPORT 0
219 #define LWT_MEMORY (16<<20)
222 # if defined(__KERNEL__)
223 # if !defined(BITS_PER_LONG)
224 # error "BITS_PER_LONG not defined"
226 # elif !defined(__WORDSIZE)
227 # error "__WORDSIZE not defined"
229 # define BITS_PER_LONG __WORDSIZE
232 /* kernel hasn't defined this? */
241 # if BITS_PER_LONG > 32
245 #endif /* !KLWT_SUPPORT */
251 typedef struct _lwt_page {
252 cfs_list_t lwtp_list;
253 struct page *lwtp_page;
254 lwt_event_t *lwtp_events;
258 int lwtc_current_index;
259 lwt_page_t *lwtc_current_page;
262 extern int lwt_enabled;
263 extern lwt_cpu_t lwt_cpus[];
265 /* Note that we _don't_ define LWT_EVENT at all if LWT_SUPPORT isn't set.
266 * This stuff is meant for finding specific problems; it never stays in
267 * production code... */
270 #define LWTWHERE(f,l) f ":" LWTSTR(l)
271 #define LWT_EVENTS_PER_PAGE (CFS_PAGE_SIZE / sizeof (lwt_event_t))
273 #define LWT_EVENT(p1, p2, p3, p4) \
275 unsigned long flags; \
281 local_irq_save (flags); \
283 cpu = &lwt_cpus[smp_processor_id()]; \
284 p = cpu->lwtc_current_page; \
285 e = &p->lwtp_events[cpu->lwtc_current_index++]; \
287 if (cpu->lwtc_current_index >= LWT_EVENTS_PER_PAGE) { \
288 cpu->lwtc_current_page = \
289 cfs_list_entry (p->lwtp_list.next, \
290 lwt_page_t, lwtp_list); \
291 cpu->lwtc_current_index = 0; \
294 e->lwte_when = get_cycles(); \
295 e->lwte_where = LWTWHERE(__FILE__,__LINE__); \
296 e->lwte_task = current; \
297 e->lwte_p1 = (long)(p1); \
298 e->lwte_p2 = (long)(p2); \
299 e->lwte_p3 = (long)(p3); \
300 e->lwte_p4 = (long)(p4); \
302 local_irq_restore (flags); \
306 #endif /* !KLWT_SUPPORT */
308 extern int lwt_init (void);
309 extern void lwt_fini (void);
310 extern int lwt_lookup_string (int *size, char *knlptr,
311 char *usrptr, int usrsize);
312 extern int lwt_control (int enable, int clear);
313 extern int lwt_snapshot (cfs_cycles_t *now, int *ncpu, int *total_size,
314 void *user_ptr, int user_size);
315 # else /* __KERNEL__ */
316 # define LWT_EVENT(p1,p2,p3,p4) /* no userland implementation yet */
317 # endif /* __KERNEL__ */
318 #endif /* LWT_SUPPORT */
320 /* ------------------------------------------------------------------ */
322 #define IOCTL_LIBCFS_TYPE long
325 # ifndef BITS_PER_LONG
326 # if (~0UL) == 0xffffffffUL
327 # define BITS_PER_LONG 32
329 # define BITS_PER_LONG 64
334 #if BITS_PER_LONG > 32
335 # define LI_POISON ((int)0x5a5a5a5a5a5a5a5a)
336 # define LL_POISON ((long)0x5a5a5a5a5a5a5a5a)
337 # define LP_POISON ((void *)(long)0x5a5a5a5a5a5a5a5a)
339 # define LI_POISON ((int)0x5a5a5a5a)
340 # define LL_POISON ((long)0x5a5a5a5a)
341 # define LP_POISON ((void *)(long)0x5a5a5a5a)
344 /* this is a bit chunky */
346 #define _LWORDSIZE BITS_PER_LONG
348 #if (defined(__KERNEL__) && defined(HAVE_KERN__U64_LONG_LONG)) || \
349 (!defined(__KERNEL__) && defined(HAVE_USER__U64_LONG_LONG))
352 # define LPX64 "%#Lx"
353 # define LPX64i "%Lx"
358 # define LPX64 "%#lx"
359 # define LPX64i "%lx"
364 * long_ptr_t & ulong_ptr_t, same to "long" for gcc
376 # error "No word size defined"
381 /* compat macroses */
382 #ifndef HAVE_SCATTERLIST_SETPAGE
383 static inline void sg_set_page(struct scatterlist *sg, struct page *page,
384 unsigned int len, unsigned int offset)
392 #define cfs_smp_processor_id() smp_processor_id()
395 # ifdef CONFIG_PREEMPT
396 # define cfs_get_cpu() ({ preempt_disable(); smp_processor_id(); })
397 # define cfs_put_cpu() preempt_enable()
399 # define cfs_get_cpu() smp_processor_id()
400 # define cfs_put_cpu()
403 # define cfs_get_cpu() get_cpu()
404 # define cfs_put_cpu() put_cpu()
405 #endif /* get_cpu & put_cpu */