2 * Copyright (c) 1991 Regents of the University of California.
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6 * modification, are permitted provided that the following conditions
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14 * may be used to endorse or promote products derived from this software
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29 * from: @(#)proc.h 7.1 (Berkeley) 5/15/91
33 #ifndef _MACHINE_PROC_H_
34 #define _MACHINE_PROC_H_
36 #include <machine/segments.h>
43 struct segment_descriptor ldt_sd;
47 * Machine-dependent part of the proc structure for i386.
49 * t - Descriptor tables lock
52 int md_spinlock_count; /* (k) */
53 register_t md_saved_flags; /* (k) */
54 register_t md_spurflt_addr; /* (k) Spurious page fault address. */
58 struct proc_ldt *md_ldt; /* (t) per-process ldt */
61 #define KINFO_PROC_SIZE 768
65 /* Get the current kernel thread stack usage. */
66 #define GET_STACK_USAGE(total, used) do { \
67 struct thread *td = curthread; \
68 (total) = td->td_kstack_pages * PAGE_SIZE; \
69 (used) = (char *)td->td_kstack + \
70 td->td_kstack_pages * PAGE_SIZE - \
74 void set_user_ldt(struct mdproc *);
75 struct proc_ldt *user_ldt_alloc(struct mdproc *, int);
76 void user_ldt_free(struct thread *);
77 void user_ldt_deref(struct proc_ldt *pldt);
79 extern struct mtx dt_lock;
89 #endif /* !_MACHINE_PROC_H_ */