drivers/staging/lustre/include/linux/libcfs/linux/kp30.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  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
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef __LIBCFS_LINUX_KP30_H__
  38 #define __LIBCFS_LINUX_KP30_H__
  39
  40
  41 #include <linux/kernel.h>
  42 #include <linux/mm.h>
  43 #include <linux/string.h>
  44 #include <linux/stat.h>
  45 #include <linux/init.h>
  46 #include <linux/errno.h>
  47 #include <linux/unistd.h>
  48 #include <linux/kmod.h>
  49 #include <linux/notifier.h>
  50 #include <linux/fs.h>
  51 #include <linux/miscdevice.h>
  52 #include <linux/vmalloc.h>
  53 #include <linux/time.h>
  54 #include <linux/slab.h>
  55 #include <linux/interrupt.h>
  56 #include <linux/highmem.h>
  57 #include <linux/module.h>
  58 #include <linux/version.h>
  59 #include <asm/atomic.h>
  60 #include <asm/uaccess.h>
  61 #include <linux/rwsem.h>
  62 #include <linux/proc_fs.h>
  63 #include <linux/file.h>
  64 #include <linux/smp.h>
  65 #include <linux/ctype.h>
  66 #include <linux/compiler.h>
  67 #ifdef HAVE_MM_INLINE
  68 # include <linux/mm_inline.h>
  69 #endif
  70 #include <linux/kallsyms.h>
  71 #include <linux/moduleparam.h>
  72 #include <linux/scatterlist.h>
  73
  74 #include <linux/libcfs/linux/portals_compat25.h>
  75
  76
  77 #define prepare_work(wq,cb,cbdata)                                          \
  78 do {                                                                      \
  79         INIT_WORK((wq), (void *)(cb));                                  \
  80 } while (0)
  81
  82 #define cfs_get_work_data(type,field,data) container_of(data,type,field)
  83
  84
  85 #define our_recalc_sigpending(current) recalc_sigpending()
  86 #define strtok(a,b) strpbrk(a, b)
  87 #define work_struct_t      struct work_struct
  88
  89 #ifdef CONFIG_SMP
  90 #else
  91 #endif
  92
  93
  94 #define SEM_COUNT(sem)    ((sem)->count)
  95
  96
  97 /* ------------------------------------------------------------------- */
  98
  99 #define PORTAL_SYMBOL_REGISTER(x)
 100 #define PORTAL_SYMBOL_UNREGISTER(x)
 101
 102
 103
 104
 105 /******************************************************************************/
 106 /* Module parameter support */
 107 #define CFS_MODULE_PARM(name, t, type, perm, desc) \
 108         module_param(name, type, perm);\
 109         MODULE_PARM_DESC(name, desc)
 110
 111 #define CFS_SYSFS_MODULE_PARM  1 /* module parameters accessible via sysfs */
 112
 113 /******************************************************************************/
 114
 115 #if (__GNUC__)
 116 /* Use the special GNU C __attribute__ hack to have the compiler check the
 117  * printf style argument string against the actual argument count and
 118  * types.
 119  */
 120 #ifdef printf
 121 # warning printf has been defined as a macro...
 122 # undef printf
 123 #endif
 124
 125 #endif /* __GNUC__ */
 126
 127 # define fprintf(a, format, b...) CDEBUG(D_OTHER, format , ## b)
 128 # define printf(format, b...) CDEBUG(D_OTHER, format , ## b)
 129 # define time(a) CURRENT_TIME
 130
 131 # define cfs_num_present_cpus()  num_present_cpus()
 132
 133 /******************************************************************************/
 134 /* Light-weight trace
 135  * Support for temporary event tracing with minimal Heisenberg effect. */
 136 #define LWT_SUPPORT  0
 137
 138 #define LWT_MEMORY   (16<<20)
 139
 140 #ifndef KLWT_SUPPORT
 141 #  if !defined(BITS_PER_LONG)
 142 #   error "BITS_PER_LONG not defined"
 143 #  endif
 144
 145 /* kernel hasn't defined this? */
 146 typedef struct {
 147         long long   lwte_when;
 148         char       *lwte_where;
 149         void       *lwte_task;
 150         long    lwte_p1;
 151         long    lwte_p2;
 152         long    lwte_p3;
 153         long    lwte_p4;
 154 # if BITS_PER_LONG > 32
 155         long    lwte_pad;
 156 # endif
 157 } lwt_event_t;
 158 #endif /* !KLWT_SUPPORT */
 159
 160 #if LWT_SUPPORT
 161 #  if !KLWT_SUPPORT
 162
 163 typedef struct _lwt_page {
 164         struct list_head               lwtp_list;
 165         struct page          *lwtp_page;
 166         lwt_event_t          *lwtp_events;
 167 } lwt_page_t;
 168
 169 typedef struct {
 170         int             lwtc_current_index;
 171         lwt_page_t      *lwtc_current_page;
 172 } lwt_cpu_t;
 173
 174 extern int       lwt_enabled;
 175 extern lwt_cpu_t lwt_cpus[];
 176
 177 /* Note that we _don't_ define LWT_EVENT at all if LWT_SUPPORT isn't set.
 178  * This stuff is meant for finding specific problems; it never stays in
 179  * production code... */
 180
 181 #define LWTSTR(n)       #n
 182 #define LWTWHERE(f,l)   f ":" LWTSTR(l)
 183 #define LWT_EVENTS_PER_PAGE (PAGE_CACHE_SIZE / sizeof (lwt_event_t))
 184
 185 #define LWT_EVENT(p1, p2, p3, p4)                                      \
 186 do {                                                                \
 187         unsigned long    flags;                                  \
 188         lwt_cpu_t       *cpu;                                      \
 189         lwt_page_t      *p;                                          \
 190         lwt_event_t     *e;                                          \
 191                                                                         \
 192         if (lwt_enabled) {                                            \
 193                 local_irq_save (flags);                          \
 194                                                                         \
 195                 cpu = &lwt_cpus[smp_processor_id()];                \
 196                 p = cpu->lwtc_current_page;                          \
 197                 e = &p->lwtp_events[cpu->lwtc_current_index++];  \
 198                                                                         \
 199                 if (cpu->lwtc_current_index >= LWT_EVENTS_PER_PAGE) {   \
 200                         cpu->lwtc_current_page =                        \
 201                                 list_entry (p->lwtp_list.next,      \
 202                                                 lwt_page_t, lwtp_list); \
 203                         cpu->lwtc_current_index = 0;                \
 204                 }                                                      \
 205                                                                         \
 206                 e->lwte_when  = get_cycles();                      \
 207                 e->lwte_where = LWTWHERE(__FILE__,__LINE__);        \
 208                 e->lwte_task  = current;                                \
 209                 e->lwte_p1    = (long)(p1);                          \
 210                 e->lwte_p2    = (long)(p2);                          \
 211                 e->lwte_p3    = (long)(p3);                          \
 212                 e->lwte_p4    = (long)(p4);                          \
 213                                                                         \
 214                 local_irq_restore (flags);                            \
 215         }                                                              \
 216 } while (0)
 217
 218 #endif /* !KLWT_SUPPORT */
 219
 220 extern int  lwt_init (void);
 221 extern void lwt_fini (void);
 222 extern int  lwt_lookup_string (int *size, char *knlptr,
 223                                char *usrptr, int usrsize);
 224 extern int  lwt_control (int enable, int clear);
 225 extern int  lwt_snapshot (cfs_cycles_t *now, int *ncpu, int *total_size,
 226                           void *user_ptr, int user_size);
 227 #endif /* LWT_SUPPORT */
 228
 229 /* ------------------------------------------------------------------ */
 230
 231 #define IOCTL_LIBCFS_TYPE long
 232
 233 #ifdef __CYGWIN__
 234 # ifndef BITS_PER_LONG
 235 #   define BITS_PER_LONG 64
 236 # endif
 237 #endif
 238
 239 # define LI_POISON ((int)0x5a5a5a5a5a5a5a5a)
 240 # define LL_POISON ((long)0x5a5a5a5a5a5a5a5a)
 241 # define LP_POISON ((void *)(long)0x5a5a5a5a5a5a5a5a)
 242
 243 /* this is a bit chunky */
 244
 245 #define _LWORDSIZE BITS_PER_LONG
 246
 247 # define LPU64 "%llu"
 248 # define LPD64 "%lld"
 249 # define LPX64 "%#llx"
 250 # define LPX64i "%llx"
 251 # define LPO64 "%#llo"
 252 # define LPF64 "L"
 253
 254 /*
 255  * long_ptr_t & ulong_ptr_t, same to "long" for gcc
 256  */
 257 # define LPLU "%lu"
 258 # define LPLD "%ld"
 259 # define LPLX "%#lx"
 260
 261 /*
 262  * pid_t
 263  */
 264 # define LPPID "%d"
 265
 266
 267 #undef _LWORDSIZE
 268
 269 /* compat macroses */
 270
 271
 272 #ifndef get_cpu
 273 # ifdef CONFIG_PREEMPT
 274 #  define get_cpu()  ({ preempt_disable(); smp_processor_id(); })
 275 #  define put_cpu()  preempt_enable()
 276 # else
 277 #  define get_cpu()  smp_processor_id()
 278 #  define put_cpu()
 279 # endif
 280 #else
 281 #endif /* get_cpu & put_cpu */
 282
 283 #define INIT_CTL_NAME(a)
 284 #define INIT_STRATEGY(a)
 285
 286 #endif