kernel.h

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*-
    2  * SPDX-License-Identifier: BSD-4-Clause
    3  *
    4  * Copyright (c) 1995 Terrence R. Lambert
    5  * All rights reserved.
    6  *
    7  * Copyright (c) 1990, 1993
    8  *      The Regents of the University of California.  All rights reserved.
    9  * (c) UNIX System Laboratories, Inc.
   10  * All or some portions of this file are derived from material licensed
   11  * to the University of California by American Telephone and Telegraph
   12  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   13  * the permission of UNIX System Laboratories, Inc.
   14  *
   15  * Redistribution and use in source and binary forms, with or without
   16  * modification, are permitted provided that the following conditions
   17  * are met:
   18  * 1. Redistributions of source code must retain the above copyright
   19  *    notice, this list of conditions and the following disclaimer.
   20  * 2. Redistributions in binary form must reproduce the above copyright
   21  *    notice, this list of conditions and the following disclaimer in the
   22  *    documentation and/or other materials provided with the distribution.
   23  * 3. All advertising materials mentioning features or use of this software
   24  *    must display the following acknowledgement:
   25  *      This product includes software developed by the University of
   26  *      California, Berkeley and its contributors.
   27  * 4. Neither the name of the University nor the names of its contributors
   28  *    may be used to endorse or promote products derived from this software
   29  *    without specific prior written permission.
   30  *
   31  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   32  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   33  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   34  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   35  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   39  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   40  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   41  * SUCH DAMAGE.
   42  *
   43  *      @(#)kernel.h    8.3 (Berkeley) 1/21/94
   44  * $FreeBSD$
   45  */
   46 
   47 #ifndef _SYS_KERNEL_H_
   48 #define _SYS_KERNEL_H_
   49 
   50 #include <sys/linker_set.h>
   51 
   52 #ifdef _KERNEL
   53 
   54 /* for intrhook below */
   55 #include <sys/queue.h>
   56 
   57 /* for timestamping SYSINITs; other files may assume this is included here */
   58 #include <sys/tslog.h>
   59 
   60 /* Global variables for the kernel. */
   61 
   62 /* 1.1 */
   63 extern char kernelname[MAXPATHLEN];
   64 
   65 extern int tick;                        /* usec per tick (1000000 / hz) */
   66 extern int hz;                          /* system clock's frequency */
   67 extern int psratio;                     /* ratio: prof / stat */
   68 extern int stathz;                      /* statistics clock's frequency */
   69 extern int profhz;                      /* profiling clock's frequency */
   70 extern int profprocs;                   /* number of process's profiling */
   71 extern volatile int ticks;
   72 
   73 #endif /* _KERNEL */
   74 
   75 /*
   76  * Enumerated types for known system startup interfaces.
   77  *
   78  * Startup occurs in ascending numeric order; the list entries are
   79  * sorted prior to attempting startup to guarantee order.  Items
   80  * of the same level are arbitrated for order based on the 'order'
   81  * element.
   82  *
   83  * These numbers are arbitrary and are chosen ONLY for ordering; the
   84  * enumeration values are explicit rather than implicit to provide
   85  * for binary compatibility with inserted elements.
   86  *
   87  * The SI_SUB_LAST value must have the highest lexical value.
   88  */
   89 enum sysinit_sub_id {
   90         SI_SUB_DUMMY            = 0x0000000,    /* not executed; for linker*/
   91         SI_SUB_DONE             = 0x0000001,    /* processed*/
   92         SI_SUB_TUNABLES         = 0x0700000,    /* establish tunable values */
   93         SI_SUB_COPYRIGHT        = 0x0800001,    /* first use of console*/
   94         SI_SUB_VM               = 0x1000000,    /* virtual memory system init */
   95         SI_SUB_COUNTER          = 0x1100000,    /* counter(9) is initialized */
   96         SI_SUB_KMEM             = 0x1800000,    /* kernel memory*/
   97         SI_SUB_HYPERVISOR       = 0x1A40000,    /*
   98                                                  * Hypervisor detection and
   99                                                  * virtualization support 
  100                                                  * setup.
  101                                                  */
  102         SI_SUB_WITNESS          = 0x1A80000,    /* witness initialization */
  103         SI_SUB_MTX_POOL_DYNAMIC = 0x1AC0000,    /* dynamic mutex pool */
  104         SI_SUB_LOCK             = 0x1B00000,    /* various locks */
  105         SI_SUB_EVENTHANDLER     = 0x1C00000,    /* eventhandler init */
  106         SI_SUB_VNET_PRELINK     = 0x1E00000,    /* vnet init before modules */
  107         SI_SUB_KLD              = 0x2000000,    /* KLD and module setup */
  108         SI_SUB_KHELP            = 0x2080000,    /* khelp modules */
  109         SI_SUB_CPU              = 0x2100000,    /* CPU resource(s)*/
  110         SI_SUB_RACCT            = 0x2110000,    /* resource accounting */
  111         SI_SUB_KDTRACE          = 0x2140000,    /* Kernel dtrace hooks */
  112         SI_SUB_RANDOM           = 0x2160000,    /* random number generator */
  113         SI_SUB_MAC              = 0x2180000,    /* TrustedBSD MAC subsystem */
  114         SI_SUB_MAC_POLICY       = 0x21C0000,    /* TrustedBSD MAC policies */
  115         SI_SUB_MAC_LATE         = 0x21D0000,    /* TrustedBSD MAC subsystem */
  116         SI_SUB_VNET             = 0x21E0000,    /* vnet 0 */
  117         SI_SUB_INTRINSIC        = 0x2200000,    /* proc 0*/
  118         SI_SUB_VM_CONF          = 0x2300000,    /* config VM, set limits*/
  119         SI_SUB_DDB_SERVICES     = 0x2380000,    /* capture, scripting, etc. */
  120         SI_SUB_RUN_QUEUE        = 0x2400000,    /* set up run queue*/
  121         SI_SUB_KTRACE           = 0x2480000,    /* ktrace */
  122         SI_SUB_OPENSOLARIS      = 0x2490000,    /* OpenSolaris compatibility */
  123         SI_SUB_AUDIT            = 0x24C0000,    /* audit */
  124         SI_SUB_CREATE_INIT      = 0x2500000,    /* create init process*/
  125         SI_SUB_SCHED_IDLE       = 0x2600000,    /* required idle procs */
  126         SI_SUB_MBUF             = 0x2700000,    /* mbuf subsystem */
  127         SI_SUB_INTR             = 0x2800000,    /* interrupt threads */
  128         SI_SUB_TASKQ            = 0x2880000,    /* task queues */
  129         SI_SUB_EPOCH            = 0x2888000,    /* epoch subsystem */
  130 #ifdef EARLY_AP_STARTUP
  131         SI_SUB_SMP              = 0x2900000,    /* start the APs*/
  132 #endif
  133         SI_SUB_SOFTINTR         = 0x2A00000,    /* start soft interrupt thread */
  134         SI_SUB_DEVFS            = 0x2F00000,    /* devfs ready for devices */
  135         SI_SUB_INIT_IF          = 0x3000000,    /* prep for net interfaces */
  136         SI_SUB_NETGRAPH         = 0x3010000,    /* Let Netgraph initialize */
  137         SI_SUB_DTRACE           = 0x3020000,    /* DTrace subsystem */
  138         SI_SUB_DTRACE_PROVIDER  = 0x3048000,    /* DTrace providers */
  139         SI_SUB_DTRACE_ANON      = 0x308C000,    /* DTrace anon enabling */
  140         SI_SUB_DRIVERS          = 0x3100000,    /* Let Drivers initialize */
  141         SI_SUB_CONFIGURE        = 0x3800000,    /* Configure devices */
  142         SI_SUB_VFS              = 0x4000000,    /* virtual filesystem*/
  143         SI_SUB_CLOCKS           = 0x4800000,    /* real time and stat clocks*/
  144         SI_SUB_SYSV_SHM         = 0x6400000,    /* System V shared memory*/
  145         SI_SUB_SYSV_SEM         = 0x6800000,    /* System V semaphores*/
  146         SI_SUB_SYSV_MSG         = 0x6C00000,    /* System V message queues*/
  147         SI_SUB_P1003_1B         = 0x6E00000,    /* P1003.1B realtime */
  148         SI_SUB_PSEUDO           = 0x7000000,    /* pseudo devices*/
  149         SI_SUB_EXEC             = 0x7400000,    /* execve() handlers */
  150         SI_SUB_PROTO_BEGIN      = 0x8000000,    /* VNET initialization */
  151         SI_SUB_PROTO_PFIL       = 0x8100000,    /* Initialize pfil before FWs */
  152         SI_SUB_PROTO_IF         = 0x8400000,    /* interfaces*/
  153         SI_SUB_PROTO_DOMAININIT = 0x8600000,    /* domain registration system */
  154         SI_SUB_PROTO_MC         = 0x8700000,    /* Multicast */
  155         SI_SUB_PROTO_DOMAIN     = 0x8800000,    /* domains (address families?)*/
  156         SI_SUB_PROTO_FIREWALL   = 0x8806000,    /* Firewalls */
  157         SI_SUB_PROTO_IFATTACHDOMAIN = 0x8808000,/* domain dependent data init */
  158         SI_SUB_PROTO_END        = 0x8ffffff,    /* VNET helper functions */
  159         SI_SUB_KPROF            = 0x9000000,    /* kernel profiling*/
  160         SI_SUB_KICK_SCHEDULER   = 0xa000000,    /* start the timeout events*/
  161         SI_SUB_INT_CONFIG_HOOKS = 0xa800000,    /* Interrupts enabled config */
  162         SI_SUB_ROOT_CONF        = 0xb000000,    /* Find root devices */
  163         SI_SUB_INTRINSIC_POST   = 0xd000000,    /* proc 0 cleanup*/
  164         SI_SUB_SYSCALLS         = 0xd800000,    /* register system calls */
  165         SI_SUB_VNET_DONE        = 0xdc00000,    /* vnet registration complete */
  166         SI_SUB_KTHREAD_INIT     = 0xe000000,    /* init process*/
  167         SI_SUB_KTHREAD_PAGE     = 0xe400000,    /* pageout daemon*/
  168         SI_SUB_KTHREAD_VM       = 0xe800000,    /* vm daemon*/
  169         SI_SUB_KTHREAD_BUF      = 0xea00000,    /* buffer daemon*/
  170         SI_SUB_KTHREAD_UPDATE   = 0xec00000,    /* update daemon*/
  171         SI_SUB_KTHREAD_IDLE     = 0xee00000,    /* idle procs*/
  172 #ifndef EARLY_AP_STARTUP
  173         SI_SUB_SMP              = 0xf000000,    /* start the APs*/
  174 #endif  
  175         SI_SUB_RACCTD           = 0xf100000,    /* start racctd*/
  176         SI_SUB_LAST             = 0xfffffff     /* final initialization */
  177 };
  178 
  179 /*
  180  * Some enumerated orders; "ANY" sorts last.
  181  */
  182 enum sysinit_elem_order {
  183         SI_ORDER_FIRST          = 0x0000000,    /* first*/
  184         SI_ORDER_SECOND         = 0x0000001,    /* second*/
  185         SI_ORDER_THIRD          = 0x0000002,    /* third*/
  186         SI_ORDER_FOURTH         = 0x0000003,    /* fourth*/
  187         SI_ORDER_FIFTH          = 0x0000004,    /* fifth*/
  188         SI_ORDER_SIXTH          = 0x0000005,    /* sixth*/
  189         SI_ORDER_SEVENTH        = 0x0000006,    /* seventh*/
  190         SI_ORDER_EIGHTH         = 0x0000007,    /* eighth*/
  191         SI_ORDER_MIDDLE         = 0x1000000,    /* somewhere in the middle */
  192         SI_ORDER_ANY            = 0xfffffff     /* last*/
  193 };
  194 
  195 /*
  196  * A system initialization call instance
  197  *
  198  * At the moment there is one instance of sysinit.  We probably do not
  199  * want two which is why this code is if'd out, but we definitely want
  200  * to discern SYSINIT's which take non-constant data pointers and
  201  * SYSINIT's which take constant data pointers,
  202  *
  203  * The C_* macros take functions expecting const void * arguments
  204  * while the non-C_* macros take functions expecting just void * arguments.
  205  *
  206  * With -Wcast-qual on, the compiler issues warnings:
  207  *      - if we pass non-const data or functions taking non-const data
  208  *        to a C_* macro.
  209  *
  210  *      - if we pass const data to the normal macros
  211  *
  212  * However, no warning is issued if we pass a function taking const data
  213  * through a normal non-const macro.  This is ok because the function is
  214  * saying it won't modify the data so we don't care whether the data is
  215  * modifiable or not.
  216  */
  217 
  218 typedef void (*sysinit_nfunc_t)(void *);
  219 typedef void (*sysinit_cfunc_t)(const void *);
  220 
  221 struct sysinit {
  222         enum sysinit_sub_id     subsystem;      /* subsystem identifier*/
  223         enum sysinit_elem_order order;          /* init order within subsystem*/
  224         sysinit_cfunc_t func;                   /* function             */
  225         const void      *udata;                 /* multiplexer/argument */
  226 };
  227 
  228 /*
  229  * Default: no special processing
  230  *
  231  * The C_ version of SYSINIT is for data pointers to const
  232  * data ( and functions taking data pointers to const data ).
  233  * At the moment it is no different from SYSINIT and thus
  234  * still results in warnings.
  235  *
  236  * The casts are necessary to have the compiler produce the
  237  * correct warnings when -Wcast-qual is used.
  238  *
  239  */
  240 #ifdef TSLOG
  241 struct sysinit_tslog {
  242         sysinit_cfunc_t func;
  243         const void * data;
  244         const char * name;
  245 };
  246 static inline void
  247 sysinit_tslog_shim(const void * data)
  248 {
  249         const struct sysinit_tslog * x = data;
  250 
  251         TSRAW(curthread, TS_ENTER, "SYSINIT", x->name);
  252         (x->func)(x->data);
  253         TSRAW(curthread, TS_EXIT, "SYSINIT", x->name);
  254 }
  255 #define C_SYSINIT(uniquifier, subsystem, order, func, ident)    \
  256         static struct sysinit_tslog uniquifier ## _sys_init_tslog = {   \
  257                 func,                                           \
  258                 (ident),                                        \
  259                 #uniquifier                                     \
  260         };                                                      \
  261         static struct sysinit uniquifier ## _sys_init = {       \
  262                 subsystem,                                      \
  263                 order,                                          \
  264                 sysinit_tslog_shim,                             \
  265                 &uniquifier ## _sys_init_tslog                  \
  266         };                                                      \
  267         DATA_WSET(sysinit_set,uniquifier ## _sys_init)
  268 #else
  269 #define C_SYSINIT(uniquifier, subsystem, order, func, ident)    \
  270         static struct sysinit uniquifier ## _sys_init = {       \
  271                 subsystem,                                      \
  272                 order,                                          \
  273                 func,                                           \
  274                 (ident)                                         \
  275         };                                                      \
  276         DATA_WSET(sysinit_set,uniquifier ## _sys_init)
  277 #endif
  278 
  279 #define SYSINIT(uniquifier, subsystem, order, func, ident)      \
  280         C_SYSINIT(uniquifier, subsystem, order,                 \
  281         (sysinit_cfunc_t)(sysinit_nfunc_t)func, (void *)(ident))
  282 
  283 /*
  284  * Called on module unload: no special processing
  285  */
  286 #define C_SYSUNINIT(uniquifier, subsystem, order, func, ident)  \
  287         static struct sysinit uniquifier ## _sys_uninit = {     \
  288                 subsystem,                                      \
  289                 order,                                          \
  290                 func,                                           \
  291                 (ident)                                         \
  292         };                                                      \
  293         DATA_WSET(sysuninit_set,uniquifier ## _sys_uninit)
  294 
  295 #define SYSUNINIT(uniquifier, subsystem, order, func, ident)    \
  296         C_SYSUNINIT(uniquifier, subsystem, order,               \
  297         (sysinit_cfunc_t)(sysinit_nfunc_t)func, (void *)(ident))
  298 
  299 void    sysinit_add(struct sysinit **set, struct sysinit **set_end);
  300 
  301 #ifdef _KERNEL
  302 
  303 /*
  304  * Infrastructure for tunable 'constants'.  Value may be specified at compile
  305  * time or kernel load time.  Rules relating tunables together can be placed
  306  * in a SYSINIT function at SI_SUB_TUNABLES with SI_ORDER_ANY.
  307  *
  308  * WARNING: developers should never use the reserved suffixes specified in
  309  * loader.conf(5) for any tunables or conflicts will result.
  310  */
  311 
  312 /*
  313  * int
  314  * please avoid using for new tunables!
  315  */
  316 extern void tunable_int_init(void *);
  317 struct tunable_int {
  318         const char *path;
  319         int *var;
  320 };
  321 #define TUNABLE_INT(path, var)                                  \
  322         static struct tunable_int __CONCAT(__tunable_int_, __LINE__) = { \
  323                 (path),                                         \
  324                 (var),                                          \
  325         };                                                      \
  326         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  327             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_int_init, \
  328             &__CONCAT(__tunable_int_, __LINE__))
  329 
  330 #define TUNABLE_INT_FETCH(path, var)    getenv_int((path), (var))
  331 
  332 /*
  333  * long
  334  */
  335 extern void tunable_long_init(void *);
  336 struct tunable_long {
  337         const char *path;
  338         long *var;
  339 };
  340 #define TUNABLE_LONG(path, var)                                 \
  341         static struct tunable_long __CONCAT(__tunable_long_, __LINE__) = { \
  342                 (path),                                         \
  343                 (var),                                          \
  344         };                                                      \
  345         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  346             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_long_init,\
  347             &__CONCAT(__tunable_long_, __LINE__))
  348 
  349 #define TUNABLE_LONG_FETCH(path, var)   getenv_long((path), (var))
  350 
  351 /*
  352  * unsigned long
  353  */
  354 extern void tunable_ulong_init(void *);
  355 struct tunable_ulong {
  356         const char *path;
  357         unsigned long *var;
  358 };
  359 #define TUNABLE_ULONG(path, var)                                \
  360         static struct tunable_ulong __CONCAT(__tunable_ulong_, __LINE__) = { \
  361                 (path),                                         \
  362                 (var),                                          \
  363         };                                                      \
  364         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  365             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_ulong_init, \
  366             &__CONCAT(__tunable_ulong_, __LINE__))
  367 
  368 #define TUNABLE_ULONG_FETCH(path, var)  getenv_ulong((path), (var))
  369 
  370 /*
  371  * int64_t
  372  */
  373 extern void tunable_int64_init(void *);
  374 struct tunable_int64 {
  375         const char *path;
  376         int64_t *var;
  377 };
  378 #define TUNABLE_INT64(path, var)                                \
  379         static struct tunable_int64 __CONCAT(__tunable_int64_, __LINE__) = { \
  380                 (path),                                         \
  381                 (var),                                          \
  382         };                                                      \
  383         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  384             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_int64_init, \
  385             &__CONCAT(__tunable_int64_, __LINE__))
  386 
  387 #define TUNABLE_INT64_FETCH(path, var)  getenv_int64((path), (var))
  388 
  389 /*
  390  * uint64_t
  391  */
  392 extern void tunable_uint64_init(void *);
  393 struct tunable_uint64 {
  394         const char *path;
  395         uint64_t *var;
  396 };
  397 #define TUNABLE_UINT64(path, var)                               \
  398         static struct tunable_uint64 __CONCAT(__tunable_uint64_, __LINE__) = { \
  399                 (path),                                         \
  400                 (var),                                          \
  401         };                                                      \
  402         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  403             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_uint64_init, \
  404             &__CONCAT(__tunable_uint64_, __LINE__))
  405 
  406 #define TUNABLE_UINT64_FETCH(path, var) getenv_uint64((path), (var))
  407 
  408 /*
  409  * quad
  410  */
  411 extern void tunable_quad_init(void *);
  412 struct tunable_quad {
  413         const char *path;
  414         quad_t *var;
  415 };
  416 #define TUNABLE_QUAD(path, var)                                 \
  417         static struct tunable_quad __CONCAT(__tunable_quad_, __LINE__) = { \
  418                 (path),                                         \
  419                 (var),                                          \
  420         };                                                      \
  421         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  422             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_quad_init, \
  423             &__CONCAT(__tunable_quad_, __LINE__))
  424 
  425 #define TUNABLE_QUAD_FETCH(path, var)   getenv_quad((path), (var))
  426 
  427 /*
  428  * bool
  429  */
  430 extern void tunable_bool_init(void *);
  431 struct tunable_bool {
  432         const char *path;
  433         bool *var;
  434 };
  435 #define TUNABLE_BOOL(path, var) \
  436         static struct tunable_bool __CONCAT(__tunable_bool_, __LINE__) = { \
  437                 (path),                                         \
  438                 (var),                                          \
  439         };                                                      \
  440         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  441             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_bool_init, \
  442             &__CONCAT(__tunable_bool_, __LINE__))
  443 
  444 #define TUNABLE_BOOL_FETCH(path, var)   getenv_bool((path), (var))
  445 
  446 extern void tunable_str_init(void *);
  447 struct tunable_str {
  448         const char *path;
  449         char *var;
  450         int size;
  451 };
  452 #define TUNABLE_STR(path, var, size)                            \
  453         static struct tunable_str __CONCAT(__tunable_str_, __LINE__) = { \
  454                 (path),                                         \
  455                 (var),                                          \
  456                 (size),                                         \
  457         };                                                      \
  458         SYSINIT(__CONCAT(__Tunable_init_, __LINE__),            \
  459             SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_str_init, \
  460             &__CONCAT(__tunable_str_, __LINE__))
  461 
  462 #define TUNABLE_STR_FETCH(path, var, size)                      \
  463         getenv_string((path), (var), (size))
  464 
  465 #endif /* _KERNEL */
  466 
  467 typedef void (*ich_func_t)(void *_arg);
  468 
  469 struct intr_config_hook {
  470         STAILQ_ENTRY(intr_config_hook) ich_links;
  471         uintptr_t       ich_state;
  472 #define ICHS_QUEUED     0x1
  473 #define ICHS_RUNNING    0x2
  474 #define ICHS_DONE       0x3
  475         ich_func_t      ich_func;
  476         void            *ich_arg;
  477 };
  478 
  479 int     config_intrhook_establish(struct intr_config_hook *hook);
  480 void    config_intrhook_disestablish(struct intr_config_hook *hook);
  481 int     config_intrhook_drain(struct intr_config_hook *hook);
  482 void    config_intrhook_oneshot(ich_func_t _func, void *_arg);
  483 
  484 #endif /* !_SYS_KERNEL_H_*/
Cache object: 432d5b8908cb7ea7ead312a687d517a4
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/sys/kernel.h

FreeBSD/Linux Kernel Cross Reference
sys/sys/kernel.h
