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 num_online_cpus() smp_num_cpus
94 static inline void our_cond_resched(void)
96 if (current->need_resched)
99 #define work_struct_t struct tq_struct
100 #define cfs_get_work_data(type,field,data) (data)
103 #ifdef HAVE_3ARGS_INIT_WORK
105 #define prepare_work(wq,cb,cbdata) \
107 INIT_WORK((wq), (void *)(cb), (void *)(cbdata)); \
110 #define cfs_get_work_data(type,field,data) (data)
114 #define prepare_work(wq,cb,cbdata) \
116 INIT_WORK((wq), (void *)(cb)); \
119 #define cfs_get_work_data(type,field,data) container_of(data,type,field)
123 #define wait_on_page wait_on_page_locked
124 #define our_recalc_sigpending(current) recalc_sigpending()
125 #define strtok(a,b) strpbrk(a, b)
126 static inline void our_cond_resched(void)
130 #define work_struct_t struct work_struct
132 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
135 #define LASSERT_SPIN_LOCKED(lock) LASSERT(spin_is_locked(lock))
136 #define LINVRNT_SPIN_LOCKED(lock) LINVRNT(spin_is_locked(lock))
138 #define LASSERT_SPIN_LOCKED(lock) do {(void)sizeof(lock);} while(0)
139 #define LINVRNT_SPIN_LOCKED(lock) do {(void)sizeof(lock);} while(0)
141 #define LASSERT_SEM_LOCKED(sem) LASSERT(down_trylock(sem) != 0)
143 #ifdef HAVE_SEM_COUNT_ATOMIC
144 #define SEM_COUNT(sem) (atomic_read(&(sem)->count))
146 #define SEM_COUNT(sem) ((sem)->count)
149 #define LIBCFS_PANIC(msg) panic(msg)
151 /* ------------------------------------------------------------------- */
153 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
155 #define PORTAL_SYMBOL_REGISTER(x) inter_module_register(#x, THIS_MODULE, &x)
156 #define PORTAL_SYMBOL_UNREGISTER(x) inter_module_unregister(#x)
158 #define PORTAL_SYMBOL_GET(x) ((typeof(&x))inter_module_get(#x))
159 #define PORTAL_SYMBOL_PUT(x) inter_module_put(#x)
161 #define PORTAL_MODULE_USE MOD_INC_USE_COUNT
162 #define PORTAL_MODULE_UNUSE MOD_DEC_USE_COUNT
165 #define PORTAL_SYMBOL_REGISTER(x)
166 #define PORTAL_SYMBOL_UNREGISTER(x)
168 #define PORTAL_SYMBOL_GET(x) symbol_get(x)
169 #define PORTAL_SYMBOL_PUT(x) symbol_put(x)
171 #define PORTAL_MODULE_USE try_module_get(THIS_MODULE)
172 #define PORTAL_MODULE_UNUSE module_put(THIS_MODULE)
176 /******************************************************************************/
177 /* Module parameter support */
178 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
179 # define CFS_MODULE_PARM(name, t, type, perm, desc) \
180 MODULE_PARM(name, t);\
181 MODULE_PARM_DESC(name, desc)
184 # define CFS_MODULE_PARM(name, t, type, perm, desc) \
185 module_param(name, type, perm);\
186 MODULE_PARM_DESC(name, desc)
189 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9))
190 # define CFS_SYSFS_MODULE_PARM 0 /* no sysfs module parameters */
192 # define CFS_SYSFS_MODULE_PARM 1 /* module parameters accessible via sysfs */
194 /******************************************************************************/
197 /* Use the special GNU C __attribute__ hack to have the compiler check the
198 * printf style argument string against the actual argument count and
202 # warning printf has been defined as a macro...
206 #endif /* __GNUC__ */
208 # define fprintf(a, format, b...) CDEBUG(D_OTHER, format , ## b)
209 # define printf(format, b...) CDEBUG(D_OTHER, format , ## b)
210 # define time(a) CURRENT_TIME
212 #ifndef num_possible_cpus
213 #define num_possible_cpus() NR_CPUS
215 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
216 #define i_size_read(a) ((a)->i_size)
220 /******************************************************************************/
221 /* Light-weight trace
222 * Support for temporary event tracing with minimal Heisenberg effect. */
223 #define LWT_SUPPORT 0
225 #define LWT_MEMORY (16<<20)
228 # if defined(__KERNEL__)
229 # if !defined(BITS_PER_LONG)
230 # error "BITS_PER_LONG not defined"
232 # elif !defined(__WORDSIZE)
233 # error "__WORDSIZE not defined"
235 # define BITS_PER_LONG __WORDSIZE
238 /* kernel hasn't defined this? */
247 # if BITS_PER_LONG > 32
251 #endif /* !KLWT_SUPPORT */
257 typedef struct _lwt_page {
258 struct list_head lwtp_list;
259 struct page *lwtp_page;
260 lwt_event_t *lwtp_events;
264 int lwtc_current_index;
265 lwt_page_t *lwtc_current_page;
268 extern int lwt_enabled;
269 extern lwt_cpu_t lwt_cpus[];
271 /* Note that we _don't_ define LWT_EVENT at all if LWT_SUPPORT isn't set.
272 * This stuff is meant for finding specific problems; it never stays in
273 * production code... */
276 #define LWTWHERE(f,l) f ":" LWTSTR(l)
277 #define LWT_EVENTS_PER_PAGE (CFS_PAGE_SIZE / sizeof (lwt_event_t))
279 #define LWT_EVENT(p1, p2, p3, p4) \
281 unsigned long flags; \
287 local_irq_save (flags); \
289 cpu = &lwt_cpus[smp_processor_id()]; \
290 p = cpu->lwtc_current_page; \
291 e = &p->lwtp_events[cpu->lwtc_current_index++]; \
293 if (cpu->lwtc_current_index >= LWT_EVENTS_PER_PAGE) { \
294 cpu->lwtc_current_page = \
295 list_entry (p->lwtp_list.next, \
296 lwt_page_t, lwtp_list); \
297 cpu->lwtc_current_index = 0; \
300 e->lwte_when = get_cycles(); \
301 e->lwte_where = LWTWHERE(__FILE__,__LINE__); \
302 e->lwte_task = current; \
303 e->lwte_p1 = (long)(p1); \
304 e->lwte_p2 = (long)(p2); \
305 e->lwte_p3 = (long)(p3); \
306 e->lwte_p4 = (long)(p4); \
308 local_irq_restore (flags); \
312 #endif /* !KLWT_SUPPORT */
314 extern int lwt_init (void);
315 extern void lwt_fini (void);
316 extern int lwt_lookup_string (int *size, char *knlptr,
317 char *usrptr, int usrsize);
318 extern int lwt_control (int enable, int clear);
319 extern int lwt_snapshot (cycles_t *now, int *ncpu, int *total_size,
320 void *user_ptr, int user_size);
321 # else /* __KERNEL__ */
322 # define LWT_EVENT(p1,p2,p3,p4) /* no userland implementation yet */
323 # endif /* __KERNEL__ */
324 #endif /* LWT_SUPPORT */
326 /* ------------------------------------------------------------------ */
328 #define IOCTL_LIBCFS_TYPE long
331 # ifndef BITS_PER_LONG
332 # if (~0UL) == 0xffffffffUL
333 # define BITS_PER_LONG 32
335 # define BITS_PER_LONG 64
340 #if BITS_PER_LONG > 32
341 # define LI_POISON ((int)0x5a5a5a5a5a5a5a5a)
342 # define LL_POISON ((long)0x5a5a5a5a5a5a5a5a)
343 # define LP_POISON ((void *)(long)0x5a5a5a5a5a5a5a5a)
345 # define LI_POISON ((int)0x5a5a5a5a)
346 # define LL_POISON ((long)0x5a5a5a5a)
347 # define LP_POISON ((void *)(long)0x5a5a5a5a)
350 /* this is a bit chunky */
352 #define _LWORDSIZE BITS_PER_LONG
354 #if (defined(__KERNEL__) && defined(HAVE_KERN__U64_LONG_LONG)) || \
355 (!defined(__KERNEL__) && defined(HAVE_USER__U64_LONG_LONG))
358 # define LPX64 "%#Lx"
363 # define LPX64 "%#lx"
368 * long_ptr_t & ulong_ptr_t, same to "long" for gcc
380 # error "No word size defined"
385 /* compat macroses */
386 #ifndef HAVE_SCATTERLIST_SETPAGE
387 static inline void sg_set_page(struct scatterlist *sg, struct page *page,
388 unsigned int len, unsigned int offset)
397 # ifdef CONFIG_PREEMPT
398 # define cfs_get_cpu() ({ preempt_disable(); smp_processor_id(); })
399 # define cfs_put_cpu() preempt_enable()
401 # define cfs_get_cpu() smp_processor_id()
402 # define cfs_put_cpu()
405 # define cfs_get_cpu() get_cpu()
406 # define cfs_put_cpu() put_cpu()
407 #endif /* get_cpu & put_cpu */