lnet/include/libcfs/linux/kp30.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  */
   4 #ifndef __LIBCFS_LINUX_KP30_H__
   5 #define __LIBCFS_LINUX_KP30_H__
   6
   7 #ifndef __LIBCFS_KP30_H__
   8 #error Do not #include this file directly. #include <libcfs/kp30.h> instead
   9 #endif
  10
  11 #ifdef __KERNEL__
  12 #ifndef AUTOCONF_INCLUDED
  13 # include <linux/config.h>
  14 #endif
  15 # include <linux/kernel.h>
  16 # include <linux/mm.h>
  17 # include <linux/string.h>
  18 # include <linux/stat.h>
  19 # include <linux/init.h>
  20 # include <linux/errno.h>
  21 # include <linux/unistd.h>
  22 # include <asm/system.h>
  23 # include <linux/kmod.h>
  24 # include <linux/notifier.h>
  25 # include <linux/fs.h>
  26 # include <asm/segment.h>
  27 # include <linux/miscdevice.h>
  28 # include <linux/vmalloc.h>
  29 # include <linux/time.h>
  30 # include <linux/slab.h>
  31 # include <linux/interrupt.h>
  32 # include <linux/highmem.h>
  33 # include <linux/module.h>
  34 # include <linux/version.h>
  35 # include <lnet/lnet.h>
  36 # include <linux/smp_lock.h>
  37 # include <asm/atomic.h>
  38 # include <asm/uaccess.h>
  39 # include <linux/rwsem.h>
  40 # include <linux/proc_fs.h>
  41 # include <linux/file.h>
  42 # include <linux/smp.h>
  43 # include <linux/ctype.h>
  44 # include <linux/compiler.h>
  45 # ifdef HAVE_MM_INLINE
  46 #  include <linux/mm_inline.h>
  47 # endif
  48 # if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
  49 #  include <linux/kallsyms.h>
  50 #  include <linux/moduleparam.h>
  51 # endif
  52
  53 #include <libcfs/linux/portals_compat25.h>
  54
  55 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
  56 #define schedule_work schedule_task
  57 #define prepare_work(wq,cb,cbdata)                                            \
  58 do {                                                                          \
  59         INIT_TQUEUE((wq), 0, 0);                                              \
  60         PREPARE_TQUEUE((wq), (cb), (cbdata));                                 \
  61 } while (0)
  62
  63 #define PageUptodate Page_Uptodate
  64 #define our_recalc_sigpending(current) recalc_sigpending(current)
  65 #define num_online_cpus() smp_num_cpus
  66 static inline void our_cond_resched(void)
  67 {
  68         if (current->need_resched)
  69                schedule ();
  70 }
  71 #define work_struct_t                   struct tq_struct
  72 #define cfs_get_work_data(type,field,data)   (data)
  73 #else
  74
  75 #ifdef HAVE_3ARGS_INIT_WORK
  76
  77 #define prepare_work(wq,cb,cbdata)                                            \
  78 do {                                                                          \
  79         INIT_WORK((wq), (void *)(cb), (void *)(cbdata));                      \
  80 } while (0)
  81
  82 #define cfs_get_work_data(type,field,data)   (data)
  83
  84 #else
  85
  86 #define prepare_work(wq,cb,cbdata)                                            \
  87 do {                                                                          \
  88         INIT_WORK((wq), (void *)(cb));                                        \
  89 } while (0)
  90
  91 #define cfs_get_work_data(type,field,data) container_of(data,type,field)
  92
  93 #endif
  94
  95 #define wait_on_page wait_on_page_locked
  96 #define our_recalc_sigpending(current) recalc_sigpending()
  97 #define strtok(a,b) strpbrk(a, b)
  98 static inline void our_cond_resched(void)
  99 {
 100         cond_resched();
 101 }
 102 #define work_struct_t      struct work_struct
 103
 104 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
 105
 106 #ifdef CONFIG_SMP
 107 #define LASSERT_SPIN_LOCKED(lock) LASSERT(spin_is_locked(lock))
 108 #else
 109 #define LASSERT_SPIN_LOCKED(lock) do {} while(0)
 110 #endif
 111 #define LASSERT_SEM_LOCKED(sem) LASSERT(down_trylock(sem) != 0)
 112
 113 #define LIBCFS_PANIC(msg)            panic(msg)
 114
 115 /* ------------------------------------------------------------------- */
 116
 117 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 118
 119 #define PORTAL_SYMBOL_REGISTER(x) inter_module_register(#x, THIS_MODULE, &x)
 120 #define PORTAL_SYMBOL_UNREGISTER(x) inter_module_unregister(#x)
 121
 122 #define PORTAL_SYMBOL_GET(x) ((typeof(&x))inter_module_get(#x))
 123 #define PORTAL_SYMBOL_PUT(x) inter_module_put(#x)
 124
 125 #define PORTAL_MODULE_USE       MOD_INC_USE_COUNT
 126 #define PORTAL_MODULE_UNUSE     MOD_DEC_USE_COUNT
 127 #else
 128
 129 #define PORTAL_SYMBOL_REGISTER(x)
 130 #define PORTAL_SYMBOL_UNREGISTER(x)
 131
 132 #define PORTAL_SYMBOL_GET(x) symbol_get(x)
 133 #define PORTAL_SYMBOL_PUT(x) symbol_put(x)
 134
 135 #define PORTAL_MODULE_USE       try_module_get(THIS_MODULE)
 136 #define PORTAL_MODULE_UNUSE     module_put(THIS_MODULE)
 137
 138 #endif
 139
 140 /******************************************************************************/
 141 /* Module parameter support */
 142 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 143 # define CFS_MODULE_PARM(name, t, type, perm, desc) \
 144         MODULE_PARM(name, t);\
 145         MODULE_PARM_DESC(name, desc)
 146
 147 #else
 148 # define CFS_MODULE_PARM(name, t, type, perm, desc) \
 149         module_param(name, type, perm);\
 150         MODULE_PARM_DESC(name, desc)
 151 #endif
 152
 153 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9))
 154 # define CFS_SYSFS_MODULE_PARM  0 /* no sysfs module parameters */
 155 #else
 156 # define CFS_SYSFS_MODULE_PARM  1 /* module parameters accessible via sysfs */
 157 #endif
 158 /******************************************************************************/
 159
 160 #if (__GNUC__)
 161 /* Use the special GNU C __attribute__ hack to have the compiler check the
 162  * printf style argument string against the actual argument count and
 163  * types.
 164  */
 165 #ifdef printf
 166 # warning printf has been defined as a macro...
 167 # undef printf
 168 #endif
 169
 170 #endif /* __GNUC__ */
 171
 172 # define fprintf(a, format, b...) CDEBUG(D_OTHER, format , ## b)
 173 # define printf(format, b...) CDEBUG(D_OTHER, format , ## b)
 174 # define time(a) CURRENT_TIME
 175
 176 #ifndef num_possible_cpus
 177 #define num_possible_cpus() NR_CPUS
 178 #endif
 179 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 180 #define i_size_read(a) ((a)->i_size)
 181 #endif
 182
 183 #else  /* !__KERNEL__ */
 184 # include <stdio.h>
 185 # include <stdlib.h>
 186 #ifdef CRAY_XT3
 187 # include <ioctl.h>
 188 #elif defined(__CYGWIN__)
 189 # include <cygwin-ioctl.h>
 190 #else
 191 # include <stdint.h>
 192 #endif
 193 # include <unistd.h>
 194 # include <time.h>
 195 # include <limits.h>
 196 # include <errno.h>
 197 # include <sys/ioctl.h>                         /* for _IOWR */
 198
 199 # define CFS_MODULE_PARM(name, t, type, perm, desc)
 200 #define PORTAL_SYMBOL_GET(x) inter_module_get(#x)
 201 #define PORTAL_SYMBOL_PUT(x) inter_module_put(#x)
 202
 203 #endif /* End of !__KERNEL__ */
 204
 205 /******************************************************************************/
 206 /* Light-weight trace
 207  * Support for temporary event tracing with minimal Heisenberg effect. */
 208 #define LWT_SUPPORT  0
 209
 210 #define LWT_MEMORY   (16<<20)
 211
 212 #ifndef KLWT_SUPPORT
 213 # if defined(__KERNEL__)
 214 #  if !defined(BITS_PER_LONG)
 215 #   error "BITS_PER_LONG not defined"
 216 #  endif
 217 # elif !defined(__WORDSIZE)
 218 #  error "__WORDSIZE not defined"
 219 # else
 220 #  define BITS_PER_LONG __WORDSIZE
 221 # endif
 222
 223 /* kernel hasn't defined this? */
 224 typedef struct {
 225         long long   lwte_when;
 226         char       *lwte_where;
 227         void       *lwte_task;
 228         long        lwte_p1;
 229         long        lwte_p2;
 230         long        lwte_p3;
 231         long        lwte_p4;
 232 # if BITS_PER_LONG > 32
 233         long        lwte_pad;
 234 # endif
 235 } lwt_event_t;
 236 #endif /* !KLWT_SUPPORT */
 237
 238 #if LWT_SUPPORT
 239 # ifdef __KERNEL__
 240 #  if !KLWT_SUPPORT
 241
 242 typedef struct _lwt_page {
 243         struct list_head     lwtp_list;
 244         struct page         *lwtp_page;
 245         lwt_event_t         *lwtp_events;
 246 } lwt_page_t;
 247
 248 typedef struct {
 249         int                lwtc_current_index;
 250         lwt_page_t        *lwtc_current_page;
 251 } lwt_cpu_t;
 252
 253 extern int       lwt_enabled;
 254 extern lwt_cpu_t lwt_cpus[];
 255
 256 /* Note that we _don't_ define LWT_EVENT at all if LWT_SUPPORT isn't set.
 257  * This stuff is meant for finding specific problems; it never stays in
 258  * production code... */
 259
 260 #define LWTSTR(n)       #n
 261 #define LWTWHERE(f,l)   f ":" LWTSTR(l)
 262 #define LWT_EVENTS_PER_PAGE (CFS_PAGE_SIZE / sizeof (lwt_event_t))
 263
 264 #define LWT_EVENT(p1, p2, p3, p4)                                       \
 265 do {                                                                    \
 266         unsigned long    flags;                                         \
 267         lwt_cpu_t       *cpu;                                           \
 268         lwt_page_t      *p;                                             \
 269         lwt_event_t     *e;                                             \
 270                                                                         \
 271         if (lwt_enabled) {                                              \
 272                 local_irq_save (flags);                                 \
 273                                                                         \
 274                 cpu = &lwt_cpus[smp_processor_id()];                    \
 275                 p = cpu->lwtc_current_page;                             \
 276                 e = &p->lwtp_events[cpu->lwtc_current_index++];         \
 277                                                                         \
 278                 if (cpu->lwtc_current_index >= LWT_EVENTS_PER_PAGE) {   \
 279                         cpu->lwtc_current_page =                        \
 280                                 list_entry (p->lwtp_list.next,          \
 281                                             lwt_page_t, lwtp_list);     \
 282                         cpu->lwtc_current_index = 0;                    \
 283                 }                                                       \
 284                                                                         \
 285                 e->lwte_when  = get_cycles();                           \
 286                 e->lwte_where = LWTWHERE(__FILE__,__LINE__);            \
 287                 e->lwte_task  = current;                                \
 288                 e->lwte_p1    = (long)(p1);                             \
 289                 e->lwte_p2    = (long)(p2);                             \
 290                 e->lwte_p3    = (long)(p3);                             \
 291                 e->lwte_p4    = (long)(p4);                             \
 292                                                                         \
 293                 local_irq_restore (flags);                              \
 294         }                                                               \
 295 } while (0)
 296
 297 #endif /* !KLWT_SUPPORT */
 298
 299 extern int  lwt_init (void);
 300 extern void lwt_fini (void);
 301 extern int  lwt_lookup_string (int *size, char *knlptr,
 302                                char *usrptr, int usrsize);
 303 extern int  lwt_control (int enable, int clear);
 304 extern int  lwt_snapshot (cycles_t *now, int *ncpu, int *total_size,
 305                           void *user_ptr, int user_size);
 306 # else  /* __KERNEL__ */
 307 #  define LWT_EVENT(p1,p2,p3,p4)     /* no userland implementation yet */
 308 # endif /* __KERNEL__ */
 309 #endif /* LWT_SUPPORT */
 310
 311 /* ------------------------------------------------------------------ */
 312
 313 #define IOCTL_LIBCFS_TYPE long
 314
 315 #ifdef __CYGWIN__
 316 # ifndef BITS_PER_LONG
 317 #  if (~0UL) == 0xffffffffUL
 318 #   define BITS_PER_LONG 32
 319 #  else
 320 #   define BITS_PER_LONG 64
 321 #  endif
 322 # endif
 323 #endif
 324
 325 #if BITS_PER_LONG > 32
 326 # define LI_POISON ((int)0x5a5a5a5a5a5a5a5a)
 327 # define LL_POISON ((long)0x5a5a5a5a5a5a5a5a)
 328 # define LP_POISON ((void *)(long)0x5a5a5a5a5a5a5a5a)
 329 #else
 330 # define LI_POISON ((int)0x5a5a5a5a)
 331 # define LL_POISON ((long)0x5a5a5a5a)
 332 # define LP_POISON ((void *)(long)0x5a5a5a5a)
 333 #endif
 334
 335 /* this is a bit chunky */
 336
 337 #if defined(__KERNEL__)
 338  #define _LWORDSIZE BITS_PER_LONG
 339 #else
 340  #define _LWORDSIZE __WORDSIZE
 341 #endif
 342
 343 #if (defined(__x86_64__) && (defined(__KERNEL__) || defined(CRAY_XT3)))
 344 /* x86_64 defines __u64 as "long" in userspace, but "long long" in the kernel */
 345 # define LPU64 "%Lu"
 346 # define LPD64 "%Ld"
 347 # define LPX64 "%#Lx"
 348 # define LPF64 "L"
 349 # define LPSZ  "%lu"
 350 # define LPSSZ "%ld"
 351 #elif (_LWORDSIZE == 32)
 352 # define LPU64 "%Lu"
 353 # define LPD64 "%Ld"
 354 # define LPX64 "%#Lx"
 355 # define LPF64 "L"
 356 # define LPSZ  "%u"
 357 # define LPSSZ "%d"
 358 #elif (_LWORDSIZE == 64)
 359 # define LPU64 "%lu"
 360 # define LPD64 "%ld"
 361 # define LPX64 "%#lx"
 362 # define LPF64 "l"
 363 # define LPSZ  "%lu"
 364 # define LPSSZ "%ld"
 365 #endif
 366 #ifndef LPU64
 367 # error "No word size defined"
 368 #endif
 369
 370 #undef _LWORDSIZE
 371
 372 #endif