/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1982, 1988, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)systm.h 8.7 (Berkeley) 3/29/95
* $FreeBSD$
*/
#ifndef _SYS_SYSTM_H_
#define _SYS_SYSTM_H_
#include <sys/cdefs.h>
#include <machine/atomic.h>
#include <machine/cpufunc.h>
#include <sys/callout.h>
#include <sys/queue.h>
#include <sys/stdint.h> /* for people using printf mainly */
#ifdef __rtems__
#include <string.h>
#include <rtems/score/threaddispatch.h>
#endif /* __rtems__ */
__NULLABILITY_PRAGMA_PUSH
#ifndef __rtems__
extern int cold; /* nonzero if we are doing a cold boot */
extern int suspend_blocked; /* block suspend due to pending shutdown */
extern int rebooting; /* kern_reboot() has been called. */
#else /* __rtems__ */
/* In RTEMS there is no cold boot and reboot */
#define cold 0
#define rebooting 0
#endif /* __rtems__ */
#ifndef __rtems__
extern const char *panicstr; /* panic message */
#else /* __rtems__ */
#define panicstr NULL
#endif /* __rtems__ */
extern char version[]; /* system version */
extern char compiler_version[]; /* compiler version */
extern char copyright[]; /* system copyright */
extern int kstack_pages; /* number of kernel stack pages */
extern u_long pagesizes[]; /* supported page sizes */
extern long physmem; /* physical memory */
extern long realmem; /* 'real' memory */
extern char *rootdevnames[2]; /* names of possible root devices */
extern int boothowto; /* reboot flags, from console subsystem */
#ifndef __rtems__
extern int bootverbose; /* nonzero to print verbose messages */
#else /* __rtems__ */
#ifdef BOOTVERBOSE
extern int bootverbose; /* nonzero to print verbose messages */
#else
#define bootverbose 0 /* Remove all verbose code for the standard RTEMS build */
#endif /* BOOTVERBOSE */
#endif /* __rtems__ */
extern int maxusers; /* system tune hint */
extern int ngroups_max; /* max # of supplemental groups */
#ifndef __rtems__
extern int vm_guest; /* Running as virtual machine guest? */
#else /* __rtems__ */
#define vm_guest VM_GUEST_NO
#endif /* __rtems__ */
/*
* Detected virtual machine guest types. The intention is to expand
* and/or add to the VM_GUEST_VM type if specific VM functionality is
* ever implemented (e.g. vendor-specific paravirtualization features).
* Keep in sync with vm_guest_sysctl_names[].
*/
enum VM_GUEST { VM_GUEST_NO = 0, VM_GUEST_VM, VM_GUEST_XEN, VM_GUEST_HV,
VM_GUEST_VMWARE, VM_GUEST_KVM, VM_GUEST_BHYVE, VM_LAST };
/*
* These functions need to be declared before the KASSERT macro is invoked in
* !KASSERT_PANIC_OPTIONAL builds, so their declarations are sort of out of
* place compared to other function definitions in this header. On the other
* hand, this header is a bit disorganized anyway.
*/
void panic(const char *, ...) __dead2 __printflike(1, 2);
void vpanic(const char *, __va_list) __dead2 __printflike(1, 0);
#if defined(WITNESS) || defined(INVARIANT_SUPPORT)
#ifdef KASSERT_PANIC_OPTIONAL
void kassert_panic(const char *fmt, ...) __printflike(1, 2);
#else
#define kassert_panic panic
#endif
#endif
#ifdef INVARIANTS /* The option is always available */
#define KASSERT(exp,msg) do { \
if (__predict_false(!(exp))) \
kassert_panic msg; \
} while (0)
#define VNASSERT(exp, vp, msg) do { \
if (__predict_false(!(exp))) { \
vn_printf(vp, "VNASSERT failed\n"); \
kassert_panic msg; \
} \
} while (0)
#else
#define KASSERT(exp,msg) do { \
} while (0)
#define VNASSERT(exp, vp, msg) do { \
} while (0)
#endif
#ifndef CTASSERT /* Allow lint to override */
#define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
#endif
#if defined(_KERNEL)
#include <sys/param.h> /* MAXCPU */
#include <sys/pcpu.h> /* curthread */
#include <sys/kpilite.h>
#endif
/*
* Assert that a pointer can be loaded from memory atomically.
*
* This assertion enforces stronger alignment than necessary. For example,
* on some architectures, atomicity for unaligned loads will depend on
* whether or not the load spans multiple cache lines.
*/
#define ASSERT_ATOMIC_LOAD_PTR(var, msg) \
KASSERT(sizeof(var) == sizeof(void *) && \
((uintptr_t)&(var) & (sizeof(void *) - 1)) == 0, msg)
/*
* Assert that a thread is in critical(9) section.
*/
#define CRITICAL_ASSERT(td) \
KASSERT((td)->td_critnest >= 1, ("Not in critical section"));
/*
* If we have already panic'd and this is the thread that called
* panic(), then don't block on any mutexes but silently succeed.
* Otherwise, the kernel will deadlock since the scheduler isn't
* going to run the thread that holds any lock we need.
*/
#ifndef __rtems__
#define SCHEDULER_STOPPED_TD(td) ({ \
MPASS((td) == curthread); \
__predict_false((td)->td_stopsched); \
})
#else /* __rtems__ */
#define SCHEDULER_STOPPED_TD(td) 0
#endif /* __rtems__ */
#define SCHEDULER_STOPPED() SCHEDULER_STOPPED_TD(curthread)
/*
* Align variables.
*/
#define __read_mostly __section(".data.read_mostly")
#define __read_frequently __section(".data.read_frequently")
#define __exclusive_cache_line __aligned(CACHE_LINE_SIZE) \
__section(".data.exclusive_cache_line")
/*
* XXX the hints declarations are even more misplaced than most declarations
* in this file, since they are needed in one file (per arch) and only used
* in two files.
* XXX most of these variables should be const.
*/
extern int osreldate;
extern bool dynamic_kenv;
extern struct mtx kenv_lock;
extern char *kern_envp;
extern char *md_envp;
extern char static_env[];
extern char static_hints[]; /* by config for now */
extern char **kenvp;
extern const void *zero_region; /* address space maps to a zeroed page */
extern int unmapped_buf_allowed;
#ifdef __LP64__
#define IOSIZE_MAX iosize_max()
#define DEVFS_IOSIZE_MAX devfs_iosize_max()
#else
#define IOSIZE_MAX SSIZE_MAX
#define DEVFS_IOSIZE_MAX SSIZE_MAX
#endif
/*
* General function declarations.
*/
struct inpcb;
struct lock_object;
struct malloc_type;
struct mtx;
struct proc;
struct socket;
struct thread;
struct tty;
struct ucred;
struct uio;
struct _jmp_buf;
struct trapframe;
struct eventtimer;
#ifndef __rtems__
int setjmp(struct _jmp_buf *) __returns_twice;
void longjmp(struct _jmp_buf *, int) __dead2;
#endif /* __rtems__ */
int dumpstatus(vm_offset_t addr, off_t count);
int nullop(void);
int eopnotsupp(void);
int ureadc(int, struct uio *);
void hashdestroy(void *, struct malloc_type *, u_long);
void *hashinit(int count, struct malloc_type *type, u_long *hashmask);
void *hashinit_flags(int count, struct malloc_type *type,
u_long *hashmask, int flags);
#define HASH_NOWAIT 0x00000001
#define HASH_WAITOK 0x00000002
void *phashinit(int count, struct malloc_type *type, u_long *nentries);
void *phashinit_flags(int count, struct malloc_type *type, u_long *nentries,
int flags);
void g_waitidle(void);
void cpu_boot(int);
void cpu_flush_dcache(void *, size_t);
void cpu_rootconf(void);
void critical_enter_KBI(void);
void critical_exit_KBI(void);
void critical_exit_preempt(void);
void init_param1(void);
void init_param2(long physpages);
void init_static_kenv(char *, size_t);
void tablefull(const char *);
#if defined(KLD_MODULE) || defined(KTR_CRITICAL) || !defined(_KERNEL) || defined(GENOFFSET)
#define critical_enter() critical_enter_KBI()
#define critical_exit() critical_exit_KBI()
#else
static __inline void
critical_enter(void)
{
#ifndef __rtems__
struct thread_lite *td;
td = (struct thread_lite *)curthread;
td->td_critnest++;
__compiler_membar();
#else /* __rtems__ */
_Thread_Dispatch_disable();
#endif /* __rtems__ */
}
static __inline void
critical_exit(void)
{
#ifndef __rtems__
struct thread_lite *td;
td = (struct thread_lite *)curthread;
KASSERT(td->td_critnest != 0,
("critical_exit: td_critnest == 0"));
__compiler_membar();
td->td_critnest--;
__compiler_membar();
if (__predict_false(td->td_owepreempt))
critical_exit_preempt();
#else /* __rtems__ */
_Thread_Dispatch_enable(_Per_CPU_Get());
#endif /* __rtems__ */
}
#endif
#ifdef EARLY_PRINTF
typedef void early_putc_t(int ch);
extern early_putc_t *early_putc;
#endif
int kvprintf(char const *, void (*)(int, void*), void *, int,
__va_list) __printflike(1, 0);
void log(int, const char *, ...) __printflike(2, 3);
void log_console(struct uio *);
void vlog(int, const char *, __va_list) __printflike(2, 0);
int asprintf(char **ret, struct malloc_type *mtp, const char *format,
...) __printflike(3, 4);
int printf(const char *, ...) __printflike(1, 2);
int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
int sprintf(char *buf, const char *, ...) __printflike(2, 3);
int uprintf(const char *, ...) __printflike(1, 2);
int vprintf(const char *, __va_list) __printflike(1, 0);
int vasprintf(char **ret, struct malloc_type *mtp, const char *format,
__va_list ap) __printflike(3, 0);
int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0);
int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0);
int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0);
int sscanf(const char *, char const * _Nonnull, ...) __scanflike(2, 3);
int vsscanf(const char * _Nonnull, char const * _Nonnull, __va_list) __scanflike(2, 0);
long strtol(const char *, char **, int);
u_long strtoul(const char *, char **, int);
#ifndef __rtems__
quad_t strtoq(const char *, char **, int);
u_quad_t strtouq(const char *, char **, int);
#else /* __rtems__ */
long long strtoll(const char *, char **, int);
unsigned long long strtoull(const char *, char **, int);
static inline quad_t
strtoq(const char *nptr, char **endptr, int base)
{
return (strtoll(nptr, endptr, base));
}
static inline u_quad_t
strtouq(const char *nptr, char **endptr, int base)
{
return (strtoull(nptr, endptr, base));
}
#endif /* __rtems__ */
void tprintf(struct proc *p, int pri, const char *, ...) __printflike(3, 4);
void vtprintf(struct proc *, int, const char *, __va_list) __printflike(3, 0);
void hexdump(const void *ptr, int length, const char *hdr, int flags);
#define HD_COLUMN_MASK 0xff
#define HD_DELIM_MASK 0xff00
#define HD_OMIT_COUNT (1 << 16)
#define HD_OMIT_HEX (1 << 17)
#define HD_OMIT_CHARS (1 << 18)
#define ovbcopy(f, t, l) bcopy((f), (t), (l))
void bcopy(const void * _Nonnull from, void * _Nonnull to, size_t len);
#define bcopy(from, to, len) __builtin_memmove((to), (from), (len))
void bzero(void * _Nonnull buf, size_t len);
#define bzero(buf, len) __builtin_memset((buf), 0, (len))
void explicit_bzero(void * _Nonnull, size_t);
int bcmp(const void *b1, const void *b2, size_t len);
#define bcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len))
void *memset(void * _Nonnull buf, int c, size_t len);
#define memset(buf, c, len) __builtin_memset((buf), (c), (len))
void *memcpy(void * _Nonnull to, const void * _Nonnull from, size_t len);
#define memcpy(to, from, len) __builtin_memcpy((to), (from), (len))
void *memmove(void * _Nonnull dest, const void * _Nonnull src, size_t n);
#define memmove(dest, src, n) __builtin_memmove((dest), (src), (n))
int memcmp(const void *b1, const void *b2, size_t len);
#define memcmp(b1, b2, len) __builtin_memcmp((b1), (b2), (len))
void *memset_early(void * _Nonnull buf, int c, size_t len);
#define bzero_early(buf, len) memset_early((buf), 0, (len))
void *memcpy_early(void * _Nonnull to, const void * _Nonnull from, size_t len);
void *memmove_early(void * _Nonnull dest, const void * _Nonnull src, size_t n);
#define bcopy_early(from, to, len) memmove_early((to), (from), (len))
#ifndef __rtems__
int copystr(const void * _Nonnull __restrict kfaddr,
void * _Nonnull __restrict kdaddr, size_t len,
size_t * __restrict lencopied);
int copyinstr(const void * __restrict udaddr,
void * _Nonnull __restrict kaddr, size_t len,
size_t * __restrict lencopied);
int copyin(const void * __restrict udaddr,
void * _Nonnull __restrict kaddr, size_t len);
int copyin_nofault(const void * __restrict udaddr,
void * _Nonnull __restrict kaddr, size_t len);
int copyout(const void * _Nonnull __restrict kaddr,
void * __restrict udaddr, size_t len);
int copyout_nofault(const void * _Nonnull __restrict kaddr,
void * __restrict udaddr, size_t len);
#else /* __rtems__ */
static inline int
copyinstr(const void * __restrict udaddr, void * __restrict kaddr,
size_t len, size_t * __restrict lencopied)
{
if (lencopied != NULL) {
*lencopied = len;
}
memcpy(kaddr, udaddr, len);
return (0);
}
static inline int
copyin(const void * __restrict udaddr, void * __restrict kaddr,
size_t len)
{
memcpy(kaddr, udaddr, len);
return (0);
}
static inline int
copyin_nofault(const void * __restrict udaddr, void * __restrict kaddr,
size_t len)
{
return copyin(udaddr, kaddr, len);
}
static inline int
copyout(const void * __restrict kaddr, void * __restrict udaddr,
size_t len)
{
memcpy(udaddr, kaddr, len);
return (0);
}
static inline int
copyout_nofault(const void * __restrict kaddr, void * __restrict udaddr,
size_t len)
{
return copyout(kaddr, udaddr, len);
}
#endif /* __rtems__ */
#ifndef __rtems__
int fubyte(volatile const void *base);
#else /* __rtems__ */
static inline int
fubyte(const void *base)
{
const unsigned char *byte_base = (const unsigned char *)base;
return byte_base[0];
}
#endif /* __rtems__ */
long fuword(volatile const void *base);
int fuword16(volatile const void *base);
int32_t fuword32(volatile const void *base);
int64_t fuword64(volatile const void *base);
int fueword(volatile const void *base, long *val);
int fueword32(volatile const void *base, int32_t *val);
int fueword64(volatile const void *base, int64_t *val);
int subyte(volatile void *base, int byte);
int suword(volatile void *base, long word);
int suword16(volatile void *base, int word);
int suword32(volatile void *base, int32_t word);
int suword64(volatile void *base, int64_t word);
uint32_t casuword32(volatile uint32_t *base, uint32_t oldval, uint32_t newval);
u_long casuword(volatile u_long *p, u_long oldval, u_long newval);
int casueword32(volatile uint32_t *base, uint32_t oldval, uint32_t *oldvalp,
uint32_t newval);
int casueword(volatile u_long *p, u_long oldval, u_long *oldvalp,
u_long newval);
void realitexpire(void *);
int sysbeep(int hertz, int period);
void hardclock(int cnt, int usermode);
void hardclock_sync(int cpu);
#ifndef __rtems__
void softclock(void *);
void statclock(int cnt, int usermode);
void profclock(int cnt, int usermode, uintfptr_t pc);
#endif /* __rtems__ */
int hardclockintr(void);
void startprofclock(struct proc *);
void stopprofclock(struct proc *);
void cpu_startprofclock(void);
void cpu_stopprofclock(void);
void suspendclock(void);
void resumeclock(void);
sbintime_t cpu_idleclock(void);
void cpu_activeclock(void);
void cpu_new_callout(int cpu, sbintime_t bt, sbintime_t bt_opt);
void cpu_et_frequency(struct eventtimer *et, uint64_t newfreq);
extern int cpu_disable_c2_sleep;
extern int cpu_disable_c3_sleep;
char *kern_getenv(const char *name);
void freeenv(char *env);
int getenv_int(const char *name, int *data);
int getenv_uint(const char *name, unsigned int *data);
int getenv_long(const char *name, long *data);
int getenv_ulong(const char *name, unsigned long *data);
int getenv_string(const char *name, char *data, int size);
int getenv_int64(const char *name, int64_t *data);
int getenv_uint64(const char *name, uint64_t *data);
int getenv_quad(const char *name, quad_t *data);
int kern_setenv(const char *name, const char *value);
int kern_unsetenv(const char *name);
int testenv(const char *name);
int getenv_array(const char *name, void *data, int size, int *psize,
int type_size, bool allow_signed);
#define GETENV_UNSIGNED false /* negative numbers not allowed */
#define GETENV_SIGNED true /* negative numbers allowed */
typedef uint64_t (cpu_tick_f)(void);
void set_cputicker(cpu_tick_f *func, uint64_t freq, unsigned var);
extern cpu_tick_f *cpu_ticks;
uint64_t cpu_tickrate(void);
uint64_t cputick2usec(uint64_t tick);
#ifdef APM_FIXUP_CALLTODO
struct timeval;
void adjust_timeout_calltodo(struct timeval *time_change);
#endif /* APM_FIXUP_CALLTODO */
#include <sys/libkern.h>
/* Initialize the world */
void consinit(void);
void cpu_initclocks(void);
void cpu_initclocks_bsp(void);
void cpu_initclocks_ap(void);
void usrinfoinit(void);
/* Finalize the world */
void kern_reboot(int) __dead2;
void shutdown_nice(int);
/* Timeouts */
typedef void timeout_t(void *); /* timeout function type */
#define CALLOUT_HANDLE_INITIALIZER(handle) \
{ NULL }
void callout_handle_init(struct callout_handle *);
struct callout_handle timeout(timeout_t *, void *, int);
void untimeout(timeout_t *, void *, struct callout_handle);
/* Stubs for obsolete functions that used to be for interrupt management */
#ifdef __rtems__
typedef int intrmask_t;
#endif /* __rtems__ */
static __inline intrmask_t splbio(void) { return 0; }
static __inline intrmask_t splcam(void) { return 0; }
static __inline intrmask_t splclock(void) { return 0; }
static __inline intrmask_t splhigh(void) { return 0; }
static __inline intrmask_t splimp(void) { return 0; }
static __inline intrmask_t splnet(void) { return 0; }
static __inline intrmask_t spltty(void) { return 0; }
static __inline void splx(intrmask_t ipl __unused) { return; }
/*
* Common `proc' functions are declared here so that proc.h can be included
* less often.
*/
int _sleep(void * _Nonnull chan, struct lock_object *lock, int pri,
const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags);
#define msleep(chan, mtx, pri, wmesg, timo) \
_sleep((chan), &(mtx)->lock_object, (pri), (wmesg), \
tick_sbt * (timo), 0, C_HARDCLOCK)
#define msleep_sbt(chan, mtx, pri, wmesg, bt, pr, flags) \
_sleep((chan), &(mtx)->lock_object, (pri), (wmesg), (bt), (pr), \
(flags))
#ifndef __rtems__
int msleep_spin_sbt(void * _Nonnull chan, struct mtx *mtx,
const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags);
#else /* __rtems__ */
#define msleep_spin_sbt(chan, mtx, wmesg, sbt, pr, flags) \
msleep_sbt(chan, mtx, 0, wmesg, sbt, pr, flags)
#endif /* __rtems__ */
#define msleep_spin(chan, mtx, wmesg, timo) \
msleep_spin_sbt((chan), (mtx), (wmesg), tick_sbt * (timo), \
0, C_HARDCLOCK)
int pause_sbt(const char *wmesg, sbintime_t sbt, sbintime_t pr,
int flags);
#ifdef __rtems__
#include <unistd.h>
#endif /* __rtems__ */
#define pause(wmesg, timo) \
pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK)
#define pause_sig(wmesg, timo) \
pause_sbt((wmesg), tick_sbt * (timo), 0, C_HARDCLOCK | C_CATCH)
#define tsleep(chan, pri, wmesg, timo) \
_sleep((chan), NULL, (pri), (wmesg), tick_sbt * (timo), \
0, C_HARDCLOCK)
#define tsleep_sbt(chan, pri, wmesg, bt, pr, flags) \
_sleep((chan), NULL, (pri), (wmesg), (bt), (pr), (flags))
void wakeup(void * chan);
void wakeup_one(void * chan);
/*
* Common `struct cdev *' stuff are declared here to avoid #include poisoning
*/
struct cdev;
dev_t dev2udev(struct cdev *x);
const char *devtoname(struct cdev *cdev);
#ifdef __LP64__
size_t devfs_iosize_max(void);
size_t iosize_max(void);
#endif
int poll_no_poll(int events);
/* XXX: Should be void nanodelay(u_int nsec); */
void DELAY(int usec);
/* Root mount holdback API */
struct root_hold_token;
struct root_hold_token *root_mount_hold(const char *identifier);
void root_mount_rel(struct root_hold_token *h);
int root_mounted(void);
/*
* Unit number allocation API. (kern/subr_unit.c)
*/
struct unrhdr;
struct unrhdr *new_unrhdr(int low, int high, struct mtx *mutex);
void init_unrhdr(struct unrhdr *uh, int low, int high, struct mtx *mutex);
void delete_unrhdr(struct unrhdr *uh);
void clear_unrhdr(struct unrhdr *uh);
void clean_unrhdr(struct unrhdr *uh);
void clean_unrhdrl(struct unrhdr *uh);
int alloc_unr(struct unrhdr *uh);
int alloc_unr_specific(struct unrhdr *uh, u_int item);
int alloc_unrl(struct unrhdr *uh);
void free_unr(struct unrhdr *uh, u_int item);
#ifndef __LP64__
#define UNR64_LOCKED
#endif
struct unrhdr64 {
uint64_t counter;
};
static __inline void
new_unrhdr64(struct unrhdr64 *unr64, uint64_t low)
{
unr64->counter = low;
}
#ifdef UNR64_LOCKED
uint64_t alloc_unr64(struct unrhdr64 *);
#else
static __inline uint64_t
alloc_unr64(struct unrhdr64 *unr64)
{
return (atomic_fetchadd_64(&unr64->counter, 1));
}
#endif
void intr_prof_stack_use(struct thread *td, struct trapframe *frame);
void counted_warning(unsigned *counter, const char *msg);
/*
* APIs to manage deprecation and obsolescence.
*/
struct device;
void _gone_in(int major, const char *msg);
void _gone_in_dev(struct device *dev, int major, const char *msg);
#ifdef NO_OBSOLETE_CODE
#define __gone_ok(m, msg) \
_Static_assert(m < P_OSREL_MAJOR(__FreeBSD_version)), \
"Obsolete code" msg);
#else
#define __gone_ok(m, msg)
#endif
#define gone_in(major, msg) __gone_ok(major, msg) _gone_in(major, msg)
#define gone_in_dev(dev, major, msg) __gone_ok(major, msg) _gone_in_dev(dev, major, msg)
#define gone_by_fcp101_dev(dev) \
gone_in_dev((dev), 13, \
"see https://github.com/freebsd/fcp/blob/master/fcp-0101.md")
__NULLABILITY_PRAGMA_POP
#endif /* !_SYS_SYSTM_H_ */
