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 # include <linux/config.h>
  13 # include <linux/kernel.h>
  14 # include <linux/mm.h>
  15 # include <linux/string.h>
  16 # include <linux/stat.h>
  17 # include <linux/init.h>
  18 # include <linux/errno.h>
  19 # include <linux/unistd.h>
  20 # include <asm/system.h>
  21 # include <linux/kmod.h>
  22 # include <linux/notifier.h>
  23 # include <linux/fs.h>
  24 # include <asm/segment.h>
  25 # include <linux/miscdevice.h>
  26 # include <linux/vmalloc.h>
  27 # include <linux/time.h>
  28 # include <linux/slab.h>
  29 # include <linux/interrupt.h>
  30 # include <linux/highmem.h>
  31 # include <linux/module.h>
  32 # include <linux/version.h>
  33 # include <portals/p30.h>
  34 # include <linux/smp_lock.h>
  35 # include <asm/atomic.h>
  36 # include <asm/uaccess.h>
  37 # include <linux/rwsem.h>
  38 # include <linux/proc_fs.h>
  39 # include <linux/file.h>
  40 # include <linux/smp.h>
  41 # include <linux/ctype.h>
  42 # ifdef HAVE_MM_INLINE
  43 #  include <linux/mm_inline.h>
  44 # endif
  45 # if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
  46 #  include <linux/kallsyms.h>
  47 # endif
  48
  49 #include <libcfs/linux/portals_compat25.h>
  50
  51 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
  52 #define schedule_work schedule_task
  53 #define prepare_work(wq,cb,cbdata)                                            \
  54 do {                                                                          \
  55         INIT_TQUEUE((wq), 0, 0);                                              \
  56         PREPARE_TQUEUE((wq), (cb), (cbdata));                                 \
  57 } while (0)
  58
  59 #define PageUptodate Page_Uptodate
  60 #define our_recalc_sigpending(current) recalc_sigpending(current)
  61 #define num_online_cpus() smp_num_cpus
  62 static inline void our_cond_resched(void)
  63 {
  64         if (current->need_resched)
  65                schedule ();
  66 }
  67 #define work_struct_t       struct tq_struct
  68
  69 #else
  70
  71 #define prepare_work(wq,cb,cbdata)                                            \
  72 do {                                                                          \
  73         INIT_WORK((wq), (void *)(cb), (void *)(cbdata));                      \
  74 } while (0)
  75 #define wait_on_page wait_on_page_locked
  76 #define our_recalc_sigpending(current) recalc_sigpending()
  77 #define strtok(a,b) strpbrk(a, b)
  78 static inline void our_cond_resched(void)
  79 {
  80         cond_resched();
  81 }
  82 #define work_struct_t      struct work_struct
  83
  84 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
  85
  86 #ifdef CONFIG_SMP
  87 #define LASSERT_SPIN_LOCKED(lock) LASSERT(spin_is_locked(lock))
  88 #else
  89 #define LASSERT_SPIN_LOCKED(lock) do {} while(0)
  90 #endif
  91
  92 #ifdef __arch_um__
  93 #define LBUG_WITH_LOC(file, func, line)                                 \
  94 do {                                                                    \
  95         CEMERG("LBUG - trying to dump log to /tmp/lustre-log\n");       \
  96         portals_debug_dumplog();                                        \
  97         portals_run_lbug_upcall(file, func, line);                      \
  98         panic("LBUG");                                                  \
  99 } while (0)
 100 #else
 101 #define LBUG_WITH_LOC(file, func, line)                                 \
 102 do {                                                                    \
 103         CEMERG("LBUG\n");                                               \
 104         portals_debug_dumpstack(NULL);                                  \
 105         portals_debug_dumplog();                                        \
 106         portals_run_lbug_upcall(file, func, line);                      \
 107         set_task_state(current, TASK_UNINTERRUPTIBLE);                  \
 108         schedule();                                                     \
 109 } while (0)
 110 #endif /* __arch_um__ */
 111
 112 /* ------------------------------------------------------------------- */
 113
 114 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 115
 116 #define PORTAL_SYMBOL_REGISTER(x) inter_module_register(#x, THIS_MODULE, &x)
 117 #define PORTAL_SYMBOL_UNREGISTER(x) inter_module_unregister(#x)
 118
 119 #define PORTAL_SYMBOL_GET(x) ((typeof(&x))inter_module_get(#x))
 120 #define PORTAL_SYMBOL_PUT(x) inter_module_put(#x)
 121
 122 #define PORTAL_MODULE_USE       MOD_INC_USE_COUNT
 123 #define PORTAL_MODULE_UNUSE     MOD_DEC_USE_COUNT
 124 #else
 125
 126 #define PORTAL_SYMBOL_REGISTER(x)
 127 #define PORTAL_SYMBOL_UNREGISTER(x)
 128
 129 #define PORTAL_SYMBOL_GET(x) symbol_get(x)
 130 #define PORTAL_SYMBOL_PUT(x) symbol_put(x)
 131
 132 #define PORTAL_MODULE_USE       try_module_get(THIS_MODULE)
 133 #define PORTAL_MODULE_UNUSE     module_put(THIS_MODULE)
 134
 135 #endif
 136
 137 /******************************************************************************/
 138
 139 #if (__GNUC__)
 140 /* Use the special GNU C __attribute__ hack to have the compiler check the
 141  * printf style argument string against the actual argument count and
 142  * types.
 143  */
 144 #ifdef printf
 145 # warning printf has been defined as a macro...
 146 # undef printf
 147 #endif
 148
 149 #endif /* __GNUC__ */
 150
 151 # define fprintf(a, format, b...) CDEBUG(D_OTHER, format , ## b)
 152 # define printf(format, b...) CDEBUG(D_OTHER, format , ## b)
 153 # define time(a) CURRENT_TIME
 154
 155 #else  /* !__KERNEL__ */
 156 # include <stdio.h>
 157 # include <stdlib.h>
 158 #ifndef __CYGWIN__
 159 # include <stdint.h>
 160 #else
 161 # include <cygwin-ioctl.h>
 162 #endif
 163 # include <unistd.h>
 164 # include <time.h>
 165 # include <limits.h>
 166
 167 #endif /* End of !__KERNEL__ */
 168
 169 /******************************************************************************/
 170 /* Light-weight trace
 171  * Support for temporary event tracing with minimal Heisenberg effect. */
 172 #define LWT_SUPPORT  0
 173
 174 #define LWT_MEMORY   (16<<20)
 175
 176 #if !KLWT_SUPPORT
 177 # if defined(__KERNEL__)
 178 #  if !defined(BITS_PER_LONG)
 179 #   error "BITS_PER_LONG not defined"
 180 #  endif
 181 # elif !defined(__WORDSIZE)
 182 #  error "__WORDSIZE not defined"
 183 # else
 184 #  define BITS_PER_LONG __WORDSIZE
 185 # endif
 186
 187 /* kernel hasn't defined this? */
 188 typedef struct {
 189         long long   lwte_when;
 190         char       *lwte_where;
 191         void       *lwte_task;
 192         long        lwte_p1;
 193         long        lwte_p2;
 194         long        lwte_p3;
 195         long        lwte_p4;
 196 # if BITS_PER_LONG > 32
 197         long        lwte_pad;
 198 # endif
 199 } lwt_event_t;
 200 #endif /* !KLWT_SUPPORT */
 201
 202 #if LWT_SUPPORT
 203 # ifdef __KERNEL__
 204 #  if !KLWT_SUPPORT
 205
 206 typedef struct _lwt_page {
 207         struct list_head     lwtp_list;
 208         struct page         *lwtp_page;
 209         lwt_event_t         *lwtp_events;
 210 } lwt_page_t;
 211
 212 typedef struct {
 213         int                lwtc_current_index;
 214         lwt_page_t        *lwtc_current_page;
 215 } lwt_cpu_t;
 216
 217 extern int       lwt_enabled;
 218 extern lwt_cpu_t lwt_cpus[];
 219
 220 /* Note that we _don't_ define LWT_EVENT at all if LWT_SUPPORT isn't set.
 221  * This stuff is meant for finding specific problems; it never stays in
 222  * production code... */
 223
 224 #define LWTSTR(n)       #n
 225 #define LWTWHERE(f,l)   f ":" LWTSTR(l)
 226 #define LWT_EVENTS_PER_PAGE (PAGE_SIZE / sizeof (lwt_event_t))
 227
 228 #define LWT_EVENT(p1, p2, p3, p4)                                       \
 229 do {                                                                    \
 230         unsigned long    flags;                                         \
 231         lwt_cpu_t       *cpu;                                           \
 232         lwt_page_t      *p;                                             \
 233         lwt_event_t     *e;                                             \
 234                                                                         \
 235         if (lwt_enabled) {                                              \
 236                 local_irq_save (flags);                                 \
 237                                                                         \
 238                 cpu = &lwt_cpus[smp_processor_id()];                    \
 239                 p = cpu->lwtc_current_page;                             \
 240                 e = &p->lwtp_events[cpu->lwtc_current_index++];         \
 241                                                                         \
 242                 if (cpu->lwtc_current_index >= LWT_EVENTS_PER_PAGE) {   \
 243                         cpu->lwtc_current_page =                        \
 244                                 list_entry (p->lwtp_list.next,          \
 245                                             lwt_page_t, lwtp_list);     \
 246                         cpu->lwtc_current_index = 0;                    \
 247                 }                                                       \
 248                                                                         \
 249                 e->lwte_when  = get_cycles();                           \
 250                 e->lwte_where = LWTWHERE(__FILE__,__LINE__);            \
 251                 e->lwte_task  = current;                                \
 252                 e->lwte_p1    = (long)(p1);                             \
 253                 e->lwte_p2    = (long)(p2);                             \
 254                 e->lwte_p3    = (long)(p3);                             \
 255                 e->lwte_p4    = (long)(p4);                             \
 256                                                                         \
 257                 local_irq_restore (flags);                              \
 258         }                                                               \
 259 } while (0)
 260
 261 #endif /* !KLWT_SUPPORT */
 262
 263 extern int  lwt_init (void);
 264 extern void lwt_fini (void);
 265 extern int  lwt_lookup_string (int *size, char *knlptr,
 266                                char *usrptr, int usrsize);
 267 extern int  lwt_control (int enable, int clear);
 268 extern int  lwt_snapshot (cycles_t *now, int *ncpu, int *total_size,
 269                           void *user_ptr, int user_size);
 270 # else  /* __KERNEL__ */
 271 #  define LWT_EVENT(p1,p2,p3,p4)     /* no userland implementation yet */
 272 # endif /* __KERNEL__ */
 273 #endif /* LWT_SUPPORT */
 274
 275 /* ------------------------------------------------------------------ */
 276
 277 #define IOCTL_PORTAL_TYPE long
 278
 279 #ifdef __CYGWIN__
 280 # ifndef BITS_PER_LONG
 281 #  if (~0UL) == 0xffffffffUL
 282 #   define BITS_PER_LONG 32
 283 #  else
 284 #   define BITS_PER_LONG 64
 285 #  endif
 286 # endif
 287 #endif
 288
 289 #if BITS_PER_LONG > 32
 290 # define LI_POISON ((int)0x5a5a5a5a5a5a5a5a)
 291 # define LL_POISON ((long)0x5a5a5a5a5a5a5a5a)
 292 # define LP_POISON ((void *)(long)0x5a5a5a5a5a5a5a5a)
 293 #else
 294 # define LI_POISON ((int)0x5a5a5a5a)
 295 # define LL_POISON ((long)0x5a5a5a5a)
 296 # define LP_POISON ((void *)(long)0x5a5a5a5a)
 297 #endif
 298
 299 #if defined(__x86_64__) && defined(__KERNEL__)
 300 /* x86_64 defines __u64 as "long" in userspace, but "long long" in the kernel */
 301 # define LPU64 "%Lu"
 302 # define LPD64 "%Ld"
 303 # define LPX64 "%#Lx"
 304 # define LPSZ  "%lu"
 305 # define LPSSZ "%ld"
 306 #elif (BITS_PER_LONG == 32 || __WORDSIZE == 32)
 307 # define LPU64 "%Lu"
 308 # define LPD64 "%Ld"
 309 # define LPX64 "%#Lx"
 310 # define LPSZ  "%u"
 311 # define LPSSZ "%d"
 312 #elif (BITS_PER_LONG == 64 || __WORDSIZE == 64)
 313 # define LPU64 "%lu"
 314 # define LPD64 "%ld"
 315 # define LPX64 "%#lx"
 316 # define LPSZ  "%lu"
 317 # define LPSSZ "%ld"
 318 #endif
 319 #ifndef LPU64
 320 # error "No word size defined"
 321 #endif
 322
 323 #endif