2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1982, 1988, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)systm.h 8.7 (Berkeley) 3/29/95
43 #include <sys/cdefs.h>
44 #include <machine/atomic.h>
45 #include <machine/cpufunc.h>
46 #include <sys/callout.h>
47 #include <sys/queue.h>
48 #include <sys/stdint.h> /* for people using printf mainly */
50 __NULLABILITY_PRAGMA_PUSH
53 extern int cold; /* nonzero if we are doing a cold boot */
54 extern int suspend_blocked; /* block suspend due to pending shutdown */
55 extern int rebooting; /* kern_reboot() has been called. */
56 extern const char *panicstr; /* panic message */
58 #define KERNEL_PANICKED() __predict_false(panicked)
59 extern char version[]; /* system version */
60 extern char compiler_version[]; /* compiler version */
61 extern char copyright[]; /* system copyright */
62 extern int kstack_pages; /* number of kernel stack pages */
64 extern u_long pagesizes[]; /* supported page sizes */
65 extern long physmem; /* physical memory */
66 extern long realmem; /* 'real' memory */
68 extern char *rootdevnames[2]; /* names of possible root devices */
70 extern int boothowto; /* reboot flags, from console subsystem */
71 extern int bootverbose; /* nonzero to print verbose messages */
73 extern int maxusers; /* system tune hint */
74 extern int ngroups_max; /* max # of supplemental groups */
75 extern int vm_guest; /* Running as virtual machine guest? */
78 * Detected virtual machine guest types. The intention is to expand
79 * and/or add to the VM_GUEST_VM type if specific VM functionality is
80 * ever implemented (e.g. vendor-specific paravirtualization features).
81 * Keep in sync with vm_guest_sysctl_names[].
83 enum VM_GUEST { VM_GUEST_NO = 0, VM_GUEST_VM, VM_GUEST_XEN, VM_GUEST_HV,
84 VM_GUEST_VMWARE, VM_GUEST_KVM, VM_GUEST_BHYVE, VM_GUEST_VBOX,
85 VM_GUEST_PARALLELS, VM_LAST };
87 #ifdef INVARIANTS /* The option is always available */
88 #define VNASSERT(exp, vp, msg) do { \
89 if (__predict_false(!(exp))) { \
90 vn_printf(vp, "VNASSERT failed: %s not true at %s:%d (%s)\n",\
91 #exp, __FILE__, __LINE__, __func__); \
95 #define VNPASS(exp, vp) do { \
96 const char *_exp = #exp; \
97 VNASSERT(exp, vp, ("condition %s not met at %s:%d (%s)", \
98 _exp, __FILE__, __LINE__, __func__)); \
100 #define __assert_unreachable() \
101 panic("executing segment marked as unreachable at %s:%d (%s)\n", \
102 __FILE__, __LINE__, __func__)
104 #define VNASSERT(exp, vp, msg) do { \
106 #define VNPASS(exp, vp) do { \
108 #define __assert_unreachable() __unreachable()
111 #ifndef CTASSERT /* Allow lint to override */
112 #define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
117 * These functions need to be declared before the KASSERT macro is invoked in
118 * !KASSERT_PANIC_OPTIONAL builds, so their declarations are sort of out of
119 * place compared to other function definitions in this header. On the other
120 * hand, this header is a bit disorganized anyway.
122 void panic(const char *, ...) __dead2 __printflike(1, 2);
123 void vpanic(const char *, __va_list) __dead2 __printflike(1, 0);
126 #if defined(_STANDALONE)
129 * Until we have more experience with KASSERTS that are called
130 * from the boot loader, they are off. The bootloader does this
131 * a little differently than the kernel (we just call printf atm).
132 * we avoid most of the common functions in the boot loader, so
133 * declare printf() here too.
135 int printf(const char *, ...) __printflike(1, 2);
136 # define kassert_panic printf
137 #else /* !_STANDALONE */
138 # if defined(WITNESS) || defined(INVARIANT_SUPPORT)
139 # ifdef KASSERT_PANIC_OPTIONAL
140 void kassert_panic(const char *fmt, ...) __printflike(1, 2);
142 # define kassert_panic panic
143 # endif /* KASSERT_PANIC_OPTIONAL */
144 # endif /* defined(WITNESS) || defined(INVARIANT_SUPPORT) */
145 #endif /* _STANDALONE */
147 #if defined(INVARIANTS) || defined(_STANDALONE)
148 #define KASSERT(exp,msg) do { \
149 if (__predict_false(!(exp))) \
152 #else /* !INVARIANTS && !_STANDALONE */
153 #define KASSERT(exp,msg) do { \
155 #endif /* INVARIANTS || _STANDALONE */
158 * Helpful macros for quickly coming up with assertions with informative
161 #define MPASS(ex) MPASS4(ex, #ex, __FILE__, __LINE__)
162 #define MPASS2(ex, what) MPASS4(ex, what, __FILE__, __LINE__)
163 #define MPASS3(ex, file, line) MPASS4(ex, #ex, file, line)
164 #define MPASS4(ex, what, file, line) \
165 KASSERT((ex), ("Assertion %s failed at %s:%d", what, file, line))
170 #define __read_mostly __section(".data.read_mostly")
171 #define __read_frequently __section(".data.read_frequently")
172 #define __exclusive_cache_line __aligned(CACHE_LINE_SIZE) \
173 __section(".data.exclusive_cache_line")
175 #include <sys/param.h> /* MAXCPU */
176 #include <sys/pcpu.h> /* curthread */
177 #include <sys/kpilite.h>
180 * Assert that a pointer can be loaded from memory atomically.
182 * This assertion enforces stronger alignment than necessary. For example,
183 * on some architectures, atomicity for unaligned loads will depend on
184 * whether or not the load spans multiple cache lines.
186 #define ASSERT_ATOMIC_LOAD_PTR(var, msg) \
187 KASSERT(sizeof(var) == sizeof(void *) && \
188 ((uintptr_t)&(var) & (sizeof(void *) - 1)) == 0, msg)
191 * Assert that a thread is in critical(9) section.
193 #define CRITICAL_ASSERT(td) \
194 KASSERT((td)->td_critnest >= 1, ("Not in critical section"));
197 * If we have already panic'd and this is the thread that called
198 * panic(), then don't block on any mutexes but silently succeed.
199 * Otherwise, the kernel will deadlock since the scheduler isn't
200 * going to run the thread that holds any lock we need.
202 #define SCHEDULER_STOPPED_TD(td) ({ \
203 MPASS((td) == curthread); \
204 __predict_false((td)->td_stopsched); \
206 #define SCHEDULER_STOPPED() SCHEDULER_STOPPED_TD(curthread)
208 extern int osreldate;
210 extern const void *zero_region; /* address space maps to a zeroed page */
212 extern int unmapped_buf_allowed;
215 #define IOSIZE_MAX iosize_max()
216 #define DEVFS_IOSIZE_MAX devfs_iosize_max()
218 #define IOSIZE_MAX SSIZE_MAX
219 #define DEVFS_IOSIZE_MAX SSIZE_MAX
223 * General function declarations.
240 int setjmp(struct _jmp_buf *) __returns_twice;
241 void longjmp(struct _jmp_buf *, int) __dead2;
242 int dumpstatus(vm_offset_t addr, off_t count);
244 int eopnotsupp(void);
245 int ureadc(int, struct uio *);
246 void hashdestroy(void *, struct malloc_type *, u_long);
247 void *hashinit(int count, struct malloc_type *type, u_long *hashmask);
248 void *hashinit_flags(int count, struct malloc_type *type,
249 u_long *hashmask, int flags);
250 #define HASH_NOWAIT 0x00000001
251 #define HASH_WAITOK 0x00000002
253 void *phashinit(int count, struct malloc_type *type, u_long *nentries);
254 void *phashinit_flags(int count, struct malloc_type *type, u_long *nentries,
256 void g_waitidle(void);
258 void cpu_flush_dcache(void *, size_t);
259 void cpu_rootconf(void);
260 void critical_enter_KBI(void);
261 void critical_exit_KBI(void);
262 void critical_exit_preempt(void);
263 void init_param1(void);
264 void init_param2(long physpages);
265 void init_static_kenv(char *, size_t);
266 void tablefull(const char *);
269 * Allocate per-thread "current" state in the linuxkpi
271 extern int (*lkpi_alloc_current)(struct thread *, int);
272 int linux_alloc_current_noop(struct thread *, int);
274 #if defined(KLD_MODULE) || defined(KTR_CRITICAL) || !defined(_KERNEL) || defined(GENOFFSET)
275 #define critical_enter() critical_enter_KBI()
276 #define critical_exit() critical_exit_KBI()
281 struct thread_lite *td;
283 td = (struct thread_lite *)curthread;
291 struct thread_lite *td;
293 td = (struct thread_lite *)curthread;
294 KASSERT(td->td_critnest != 0,
295 ("critical_exit: td_critnest == 0"));
299 if (__predict_false(td->td_owepreempt))
300 critical_exit_preempt();
306 typedef void early_putc_t(int ch);
307 extern early_putc_t *early_putc;
309 int kvprintf(char const *, void (*)(int, void*), void *, int,
310 __va_list) __printflike(1, 0);
311 void log(int, const char *, ...) __printflike(2, 3);
312 void log_console(struct uio *);
313 void vlog(int, const char *, __va_list) __printflike(2, 0);
314 int asprintf(char **ret, struct malloc_type *mtp, const char *format,
315 ...) __printflike(3, 4);
316 int printf(const char *, ...) __printflike(1, 2);
317 int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
318 int sprintf(char *buf, const char *, ...) __printflike(2, 3);
319 int uprintf(const char *, ...) __printflike(1, 2);
320 int vprintf(const char *, __va_list) __printflike(1, 0);
321 int vasprintf(char **ret, struct malloc_type *mtp, const char *format,
322 __va_list ap) __printflike(3, 0);
323 int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0);
324 int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0);
325 int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0);
326 int sscanf(const char *, char const * _Nonnull, ...) __scanflike(2, 3);
327 int vsscanf(const char * _Nonnull, char const * _Nonnull, __va_list) __scanflike(2, 0);
328 long strtol(const char *, char **, int);
329 u_long strtoul(const char *, char **, int);
330 quad_t strtoq(const char *, char **, int);
331 u_quad_t strtouq(const char *, char **, int);
332 void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4);
333 void vtprintf(struct proc *, int, const char *, __va_list) __printflike(3, 0);
334 void hexdump(const void *ptr, int length, const char *hdr, int flags);
335 #define HD_COLUMN_MASK 0xff
336 #define HD_DELIM_MASK 0xff00
337 #define HD_OMIT_COUNT (1 << 16)
338 #define HD_OMIT_HEX (1 << 17)
339 #define HD_OMIT_CHARS (1 << 18)
341 #define ovbcopy(f, t, l) bcopy((f), (t), (l))
342 void bcopy(const void * _Nonnull from, void * _Nonnull to, size_t len);
343 void bzero(void * _Nonnull buf, size_t len);
344 void explicit_bzero(void * _Nonnull, size_t);
345 int bcmp(const void *b1, const void *b2, size_t len);
347 void *memset(void * _Nonnull buf, int c, size_t len);
348 void *memcpy(void * _Nonnull to, const void * _Nonnull from, size_t len);
349 void *memmove(void * _Nonnull dest, const void * _Nonnull src, size_t n);
350 int memcmp(const void *b1, const void *b2, size_t len);
353 void *kcsan_memset(void *, int, size_t);
354 void *kcsan_memcpy(void *, const void *, size_t);
355 void *kcsan_memmove(void *, const void *, size_t);
356 int kcsan_memcmp(const void *, const void *, size_t);
357 #define bcopy(from, to, len) kcsan_memmove((to), (from), (len))
358 #define bzero(buf, len) kcsan_memset((buf), 0, (len))
359 #define bcmp(b1, b2, len) kcsan_memcmp((b1), (b2), (len))
360 #define memset(buf, c, len) kcsan_memset((buf), (c), (len))
361 #define memcpy(to, from, len) kcsan_memcpy((to), (from), (len))
362 #define memmove(dest, src, n) kcsan_memmove((dest), (src), (n))
363 #define memcmp(b1, b2, len) kcsan_memcmp((b1), (b2), (len))
365 #define bcopy(from, to, len) __builtin_memmove((to), (from), (len))
366 #define bzero(buf, len) __builtin_memset((buf), 0, (len))
367 #define bcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len))
368 #define memset(buf, c, len) __builtin_memset((buf), (c), (len))
369 #define memcpy(to, from, len) __builtin_memcpy((to), (from), (len))
370 #define memmove(dest, src, n) __builtin_memmove((dest), (src), (n))
371 #define memcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len))
374 void *memset_early(void * _Nonnull buf, int c, size_t len);
375 #define bzero_early(buf, len) memset_early((buf), 0, (len))
376 void *memcpy_early(void * _Nonnull to, const void * _Nonnull from, size_t len);
377 void *memmove_early(void * _Nonnull dest, const void * _Nonnull src, size_t n);
378 #define bcopy_early(from, to, len) memmove_early((to), (from), (len))
380 #define copystr(src, dst, len, outlen) ({ \
381 size_t __r, __len, *__outlen; \
384 __outlen = (outlen); \
385 __r = strlcpy((dst), (src), __len); \
386 if (__outlen != NULL) \
387 *__outlen = ((__r >= __len) ? __len : __r + 1); \
388 ((__r >= __len) ? ENAMETOOLONG : 0); \
391 int copyinstr(const void * __restrict udaddr,
392 void * _Nonnull __restrict kaddr, size_t len,
393 size_t * __restrict lencopied);
394 int copyin(const void * __restrict udaddr,
395 void * _Nonnull __restrict kaddr, size_t len);
396 int copyin_nofault(const void * __restrict udaddr,
397 void * _Nonnull __restrict kaddr, size_t len);
398 int copyout(const void * _Nonnull __restrict kaddr,
399 void * __restrict udaddr, size_t len);
400 int copyout_nofault(const void * _Nonnull __restrict kaddr,
401 void * __restrict udaddr, size_t len);
404 int kcsan_copyin(const void *, void *, size_t);
405 int kcsan_copyinstr(const void *, void *, size_t, size_t *);
406 int kcsan_copyout(const void *, void *, size_t);
407 #define copyin(u, k, l) kcsan_copyin((u), (k), (l))
408 #define copyinstr(u, k, l, lc) kcsan_copyinstr((u), (k), (l), (lc))
409 #define copyout(k, u, l) kcsan_copyout((k), (u), (l))
412 int fubyte(volatile const void *base);
413 long fuword(volatile const void *base);
414 int fuword16(volatile const void *base);
415 int32_t fuword32(volatile const void *base);
416 int64_t fuword64(volatile const void *base);
417 int fueword(volatile const void *base, long *val);
418 int fueword32(volatile const void *base, int32_t *val);
419 int fueword64(volatile const void *base, int64_t *val);
420 int subyte(volatile void *base, int byte);
421 int suword(volatile void *base, long word);
422 int suword16(volatile void *base, int word);
423 int suword32(volatile void *base, int32_t word);
424 int suword64(volatile void *base, int64_t word);
425 uint32_t casuword32(volatile uint32_t *base, uint32_t oldval, uint32_t newval);
426 u_long casuword(volatile u_long *p, u_long oldval, u_long newval);
427 int casueword32(volatile uint32_t *base, uint32_t oldval, uint32_t *oldvalp,
429 int casueword(volatile u_long *p, u_long oldval, u_long *oldvalp,
432 void realitexpire(void *);
434 int sysbeep(int hertz, int period);
436 void hardclock(int cnt, int usermode);
437 void hardclock_sync(int cpu);
438 void softclock(void *);
439 void statclock(int cnt, int usermode);
440 void profclock(int cnt, int usermode, uintfptr_t pc);
442 int hardclockintr(void);
444 void startprofclock(struct proc *);
445 void stopprofclock(struct proc *);
446 void cpu_startprofclock(void);
447 void cpu_stopprofclock(void);
448 void suspendclock(void);
449 void resumeclock(void);
450 sbintime_t cpu_idleclock(void);
451 void cpu_activeclock(void);
452 void cpu_new_callout(int cpu, sbintime_t bt, sbintime_t bt_opt);
453 void cpu_et_frequency(struct eventtimer *et, uint64_t newfreq);
454 extern int cpu_disable_c2_sleep;
455 extern int cpu_disable_c3_sleep;
457 char *kern_getenv(const char *name);
458 void freeenv(char *env);
459 int getenv_int(const char *name, int *data);
460 int getenv_uint(const char *name, unsigned int *data);
461 int getenv_long(const char *name, long *data);
462 int getenv_ulong(const char *name, unsigned long *data);
463 int getenv_string(const char *name, char *data, int size);
464 int getenv_int64(const char *name, int64_t *data);
465 int getenv_uint64(const char *name, uint64_t *data);
466 int getenv_quad(const char *name, quad_t *data);
467 int getenv_bool(const char *name, bool *data);
468 bool getenv_is_true(const char *name);
469 bool getenv_is_false(const char *name);
470 int kern_setenv(const char *name, const char *value);
471 int kern_unsetenv(const char *name);
472 int testenv(const char *name);
474 int getenv_array(const char *name, void *data, int size, int *psize,
475 int type_size, bool allow_signed);
476 #define GETENV_UNSIGNED false /* negative numbers not allowed */
477 #define GETENV_SIGNED true /* negative numbers allowed */
479 typedef uint64_t (cpu_tick_f)(void);
480 void set_cputicker(cpu_tick_f *func, uint64_t freq, unsigned var);
481 extern cpu_tick_f *cpu_ticks;
482 uint64_t cpu_tickrate(void);
483 uint64_t cputick2usec(uint64_t tick);
485 #ifdef APM_FIXUP_CALLTODO
487 void adjust_timeout_calltodo(struct timeval *time_change);
488 #endif /* APM_FIXUP_CALLTODO */
490 #include <sys/libkern.h>
492 /* Initialize the world */
494 void cpu_initclocks(void);
495 void cpu_initclocks_bsp(void);
496 void cpu_initclocks_ap(void);
497 void usrinfoinit(void);
499 /* Finalize the world */
500 void kern_reboot(int) __dead2;
501 void shutdown_nice(int);
503 /* Stubs for obsolete functions that used to be for interrupt management */
504 static __inline intrmask_t splhigh(void) { return 0; }
505 static __inline intrmask_t splimp(void) { return 0; }
506 static __inline intrmask_t splnet(void) { return 0; }
507 static __inline intrmask_t spltty(void) { return 0; }
508 static __inline void splx(intrmask_t ipl __unused) { return; }
511 * Common `proc' functions are declared here so that proc.h can be included
514 int _sleep(const void * _Nonnull chan, struct lock_object *lock, int pri,
515 const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags);
516 #define msleep(chan, mtx, pri, wmesg, timo) \
517 _sleep((chan), &(mtx)->lock_object, (pri), (wmesg), \
518 tick_sbt * (timo), 0, C_HARDCLOCK)
519 #define msleep_sbt(chan, mtx, pri, wmesg, bt, pr, flags) \
520 _sleep((chan), &(mtx)->lock_object, (pri), (wmesg), (bt), (pr), \
522 int msleep_spin_sbt(const void * _Nonnull chan, struct mtx *mtx,
523 const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags);
524 #define msleep_spin(chan, mtx, wmesg, timo) \
525 msleep_spin_sbt((chan), (mtx), (wmesg), tick_sbt * (timo), \
527 int pause_sbt(const char *wmesg, sbintime_t sbt, sbintime_t pr,
529 #define pause(wmesg, timo) \
530 pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK)
531 #define pause_sig(wmesg, timo) \
532 pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK | C_CATCH)
533 #define tsleep(chan, pri, wmesg, timo) \
534 _sleep((chan), NULL, (pri), (wmesg), tick_sbt * (timo), \
536 #define tsleep_sbt(chan, pri, wmesg, bt, pr, flags) \
537 _sleep((chan), NULL, (pri), (wmesg), (bt), (pr), (flags))
538 void wakeup(const void *chan);
539 void wakeup_one(const void *chan);
540 void wakeup_any(const void *chan);
543 * Common `struct cdev *' stuff are declared here to avoid #include poisoning
547 dev_t dev2udev(struct cdev *x);
548 const char *devtoname(struct cdev *cdev);
551 size_t devfs_iosize_max(void);
552 size_t iosize_max(void);
555 int poll_no_poll(int events);
557 /* XXX: Should be void nanodelay(u_int nsec); */
558 void DELAY(int usec);
560 /* Root mount holdback API */
561 struct root_hold_token {
564 TAILQ_ENTRY(root_hold_token) list;
567 struct root_hold_token *root_mount_hold(const char *identifier);
568 void root_mount_hold_token(const char *identifier, struct root_hold_token *h);
569 void root_mount_rel(struct root_hold_token *h);
570 int root_mounted(void);
573 * Unit number allocation API. (kern/subr_unit.c)
576 struct unrhdr *new_unrhdr(int low, int high, struct mtx *mutex);
577 void init_unrhdr(struct unrhdr *uh, int low, int high, struct mtx *mutex);
578 void delete_unrhdr(struct unrhdr *uh);
579 void clear_unrhdr(struct unrhdr *uh);
580 void clean_unrhdr(struct unrhdr *uh);
581 void clean_unrhdrl(struct unrhdr *uh);
582 int alloc_unr(struct unrhdr *uh);
583 int alloc_unr_specific(struct unrhdr *uh, u_int item);
584 int alloc_unrl(struct unrhdr *uh);
585 void free_unr(struct unrhdr *uh, u_int item);
596 new_unrhdr64(struct unrhdr64 *unr64, uint64_t low)
599 unr64->counter = low;
603 uint64_t alloc_unr64(struct unrhdr64 *);
605 static __inline uint64_t
606 alloc_unr64(struct unrhdr64 *unr64)
609 return (atomic_fetchadd_64(&unr64->counter, 1));
613 void intr_prof_stack_use(struct thread *td, struct trapframe *frame);
615 void counted_warning(unsigned *counter, const char *msg);
618 * APIs to manage deprecation and obsolescence.
621 void _gone_in(int major, const char *msg);
622 void _gone_in_dev(struct device *dev, int major, const char *msg);
623 #ifdef NO_OBSOLETE_CODE
624 #define __gone_ok(m, msg) \
625 _Static_assert(m < P_OSREL_MAJOR(__FreeBSD_version)), \
626 "Obsolete code: " msg);
628 #define __gone_ok(m, msg)
630 #define gone_in(major, msg) __gone_ok(major, msg) _gone_in(major, msg)
631 #define gone_in_dev(dev, major, msg) __gone_ok(major, msg) _gone_in_dev(dev, major, msg)
634 __NULLABILITY_PRAGMA_POP
636 #endif /* !_SYS_SYSTM_H_ */