Overhaul the per-CPU support a bit:

- The MI portions of struct globaldata have been consolidated into a MI
  struct pcpu.  The MD per-CPU data are specified via a macro defined in
  machine/pcpu.h.  A macro was chosen over a struct mdpcpu so that the
  interface would be cleaner (PCPU_GET(my_md_field) vs.
  PCPU_GET(md.md_my_md_field)).
- All references to globaldata are changed to pcpu instead.  In a UP kernel,
  this data was stored as global variables which is where the original name
  came from.  In an SMP world this data is per-CPU and ideally private to each
  CPU outside of the context of debuggers.  This also included combining
  machine/globaldata.h and machine/globals.h into machine/pcpu.h.
- The pointer to the thread using the FPU on i386 was renamed from
  npxthread to fpcurthread to be identical with other architectures.
- Make the show pcpu ddb command MI with a MD callout to display MD
  fields.
- The globaldata_register() function was renamed to pcpu_init() and now
  init's MI fields of a struct pcpu in addition to registering it with
  the internal array and list.
- A pcpu_destroy() function was added to remove a struct pcpu from the
  internal array and list.

Tested on:	alpha, i386
Reviewed by:	peter, jake

1 files changed, 0 insertions, 79 deletions

diff --git a/sys/i386/include/globaldata.h b/sys/i386/include/globaldata.h
deleted file mode 100644
index 46c26c444fbf..000000000000
--- a/sys/i386/include/globaldata.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*-
- * Copyright (c) Peter Wemm <peter@netplex.com.au>
- * 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_GLOBALDATA_H_
-#define _MACHINE_GLOBALDATA_H_
-
-#ifdef _KERNEL
-
-#include <machine/segments.h>
-#include <machine/tss.h>
-
-/* XXX */
-#ifdef KTR_PERCPU
-#include <sys/ktr.h>
-#endif
-
-/*
- * This structure maps out the global data that needs to be kept on a
- * per-cpu basis.  genassym uses this to generate offsets for the assembler
- * code, which also provides external symbols so that C can get at them as
- * though they were really globals.
- *
- * The SMP parts are setup in pmap.c and locore.s for the BSP, and
- * mp_machdep.c sets up the data for the AP's to "see" when they awake.
- * The reason for doing it via a struct is so that an array of pointers
- * to each CPU's data can be set up for things like "check curproc on all
- * other processors"
- */
-struct globaldata {
-	struct	globaldata *gd_prvspace;	/* Self-reference */
-	struct	thread *gd_curthread;
-	struct	thread *gd_npxthread;
-	struct	pcb *gd_curpcb;
-	struct	thread *gd_idlethread;
-	struct	timeval gd_switchtime;
-	struct	i386tss gd_common_tss;
-	int	gd_switchticks;
-	struct	segment_descriptor gd_common_tssd;
-	struct	segment_descriptor *gd_tss_gdt;
-	int	gd_currentldt;
-	u_int	gd_cpuid;
-	u_int	gd_other_cpus;
-	SLIST_ENTRY(globaldata) gd_allcpu;
-	struct	lock_list_entry *gd_spinlocks;
-#ifdef KTR_PERCPU
-	int	gd_ktr_idx;			/* Index into trace table */
-	char	*gd_ktr_buf;
-	char	gd_ktr_buf_data[KTR_SIZE];
-#endif
-};
-
-#endif	/* _KERNEL */
-
-#endif	/* ! _MACHINE_GLOBALDATA_H_ */