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freebsd-nq/sys/alpha/include/globals.h

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Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
/*-
* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_GLOBALS_H_
#define _MACHINE_GLOBALS_H_
#ifdef _KERNEL
Move bogus proc reference stuff into <machine/globals.h>. There is no more include file including <sys/proc.h>, but there still is this wonky and (causes warnings on i386) reference in globals.h. CURTHD is now defined in <machine/globals.h> as well. The correct thing to do is provide a platform function for this.
2000-10-23 18:36:03 +00:00
#include <machine/globaldata.h>
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
register struct globaldata *globalp __asm__("$8");
#if 1
#define GLOBALP globalp
#else
#define GLOBALP ((struct globaldata *) alpha_pal_rdval())
#endif
#define PCPU_GET(name) (GLOBALP->gd_##name)
Implement accessors for per-cpu variables which don't depend on the symbols in globals.s. PCPU_GET(name) returns the value of the per-cpu variable PCPU_PTR(name) returns a pointer to the per-cpu variable PCPU_SET(name, val) sets the value of the per-cpu variable In general these are not yet used, compatibility macros remain. Unifdef SMP struct globaldata, this makes variables such as cpuid available for UP as well. Rebuilding modules is probably a good idea, but I believe old modules will still work, as most of the old infrastructure remains.
2001-01-06 19:55:42 +00:00
#define PCPU_PTR(name) (&GLOBALP->gd_##name)
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
#define PCPU_SET(name,value) (GLOBALP->gd_##name = (value))
#define CURPROC PCPU_GET(curproc)
Move bogus proc reference stuff into <machine/globals.h>. There is no more include file including <sys/proc.h>, but there still is this wonky and (causes warnings on i386) reference in globals.h. CURTHD is now defined in <machine/globals.h> as well. The correct thing to do is provide a platform function for this.
2000-10-23 18:36:03 +00:00
#define CURTHD PCPU_GET(curproc) /* temporary */
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
#define curproc PCPU_GET(curproc)
#endif /* _KERNEL */
#endif /* !_MACHINE_GLOBALS_H_ */
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