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smpboot_64.c

smpboot_64.c 2.2 KB
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  1. /*
    2. 

  2.  *	x86 SMP booting functions
    3. 

  3.  *
    4. 

  4.  *	(c) 1995 Alan Cox, Building #3 <alan@redhat.com>
    5. 

  5.  *	(c) 1998, 1999, 2000 Ingo Molnar <mingo@redhat.com>
    6. 

  6.  *	Copyright 2001 Andi Kleen, SuSE Labs.
    7. 

  7.  *
    8. 

  8.  *	Much of the core SMP work is based on previous work by Thomas Radke, to
    9. 

  9.  *	whom a great many thanks are extended.
    10. 

  10.  *
    11. 

  11.  *	Thanks to Intel for making available several different Pentium,
    12. 

  12.  *	Pentium Pro and Pentium-II/Xeon MP machines.
    13. 

  13.  *	Original development of Linux SMP code supported by Caldera.
    14. 

  14.  *
    15. 

  15.  *	This code is released under the GNU General Public License version 2
    16. 

  16.  *
    17. 

  17.  *	Fixes
    18. 

  18.  *		Felix Koop	:	NR_CPUS used properly
    19. 

  19.  *		Jose Renau	:	Handle single CPU case.
    20. 

  20.  *		Alan Cox	:	By repeated request 8) - Total BogoMIP report.
    21. 

  21.  *		Greg Wright	:	Fix for kernel stacks panic.
    22. 

  22.  *		Erich Boleyn	:	MP v1.4 and additional changes.
    23. 

  23.  *	Matthias Sattler	:	Changes for 2.1 kernel map.
    24. 

  24.  *	Michel Lespinasse	:	Changes for 2.1 kernel map.
    25. 

  25.  *	Michael Chastain	:	Change trampoline.S to gnu as.
    26. 

  26.  *		Alan Cox	:	Dumb bug: 'B' step PPro's are fine
    27. 

  27.  *		Ingo Molnar	:	Added APIC timers, based on code
    28. 

  28.  *					from Jose Renau
    29. 

  29.  *		Ingo Molnar	:	various cleanups and rewrites
    30. 

  30.  *		Tigran Aivazian	:	fixed "0.00 in /proc/uptime on SMP" bug.
    31. 

  31.  *	Maciej W. Rozycki	:	Bits for genuine 82489DX APICs
    32. 

  32.  *	Andi Kleen		:	Changed for SMP boot into long mode.
    33. 

  33.  *		Rusty Russell	:	Hacked into shape for new "hotplug" boot process.
    34. 

  34.  *      Andi Kleen              :       Converted to new state machine.
    35. 

  35.  *					Various cleanups.
    36. 

  36.  *					Probably mostly hotplug CPU ready now.
    37. 

  37.  *	Ashok Raj			: CPU hotplug support
    38. 

  38.  */
    39. 

  39. 

  40. 

  41. #include <linux/init.h>
    42. 

  42. 

  43. #include <linux/mm.h>
    44. 

  44. #include <linux/kernel_stat.h>
    45. 

  45. #include <linux/bootmem.h>
    46. 

  46. #include <linux/thread_info.h>
    47. 

  47. #include <linux/module.h>
    48. 

  48. #include <linux/delay.h>
    49. 

  49. #include <linux/mc146818rtc.h>
    50. 

  50. #include <linux/smp.h>
    51. 

  51. #include <linux/kdebug.h>
    52. 

  52. 

  53. #include <asm/acpi.h>
    54. 

  54. #include <asm/mtrr.h>
    55. 

  55. #include <asm/pgalloc.h>
    56. 

  56. #include <asm/desc.h>
    57. 

  57. #include <asm/tlbflush.h>
    58. 

  58. #include <asm/proto.h>
    59. 

  59. #include <asm/nmi.h>
    60. 

  60. #include <asm/irq.h>
    61. 

  61. #include <asm/hw_irq.h>
    62. 

  62. #include <asm/numa.h>
    63. 

  63. 

  64. #include <mach_wakecpu.h>
    65. 

  65. #include <mach_apic.h>
    66. 

  66. #include <smpboot_hooks.h>
    67. 

  67. #include <mach_apic.h>
    68. 

  68. 

  69. /* Set when the idlers are all forked */
    70. 

  70. int smp_threads_ready;
    71. 

  71. 

  72. cycles_t cacheflush_time;
    73. 

  73. unsigned long cache_decay_ticks;
    74.