2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1991 Regents of the University of California.
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8 * modification, are permitted provided that the following conditions
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16 * may be used to endorse or promote products derived from this software
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31 * from: @(#)proc.h 7.1 (Berkeley) 5/15/91
35 #ifndef _MACHINE_PROC_H_
36 #define _MACHINE_PROC_H_
38 #include <machine/segments.h>
45 struct segment_descriptor ldt_sd;
49 * Machine-dependent part of the proc structure for i386.
51 * t - Descriptor tables lock
54 int md_spinlock_count; /* (k) */
55 register_t md_saved_flags; /* (k) */
56 register_t md_spurflt_addr; /* (k) Spurious page fault address. */
60 struct proc_ldt *md_ldt; /* (t) per-process ldt */
63 #define KINFO_PROC_SIZE 768
74 /* Get the current kernel thread stack usage. */
75 #define GET_STACK_USAGE(total, used) do { \
76 struct thread *td = curthread; \
77 (total) = td->td_kstack_pages * PAGE_SIZE; \
78 (used) = (char *)td->td_kstack + \
79 td->td_kstack_pages * PAGE_SIZE - \
83 void set_user_ldt(struct mdproc *);
84 struct proc_ldt *user_ldt_alloc(struct mdproc *, int);
85 void user_ldt_free(struct thread *);
86 void user_ldt_deref(struct proc_ldt *pldt);
88 extern struct mtx dt_lock;
91 #endif /* !_MACHINE_PROC_H_ */