Trang chủ Khám phá Trợ giúp
Đăng ký Đăng nhập
phyus
/
linux-vybrid_public
8
0
Fork 0
Các tập tin Các vấn đề 0 Yêu cầu kéo về 0 Wiki
Tree: d93fc863d2
Branches Tags
linux-vybrid_pu...
/
Documentation
/
ABI
/
testing
/
sysfs-devices-system-cpu

sysfs-devices-system-cpu 2.1 KB
Lịch sử Raw

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758 
  1. What:		/sys/devices/system/cpu/
    2. 

  2. Date:		pre-git history
    3. 

  3. Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>
    4. 

  4. Description:
    5. 

  5. 		A collection of both global and individual CPU attributes
    6. 

  6. 

  7. 		Individual CPU attributes are contained in subdirectories
    8. 

  8. 		named by the kernel's logical CPU number, e.g.:
    9. 

  9. 

  10. 		/sys/devices/system/cpu/cpu#/
    11. 

  11. 

  12. 

  13. What:		/sys/devices/system/cpu/kernel_max
    14. 

  14. 		/sys/devices/system/cpu/offline
    15. 

  15. 		/sys/devices/system/cpu/online
    16. 

  16. 		/sys/devices/system/cpu/possible
    17. 

  17. 		/sys/devices/system/cpu/present
    18. 

  18. Date:		December 2008
    19. 

  19. Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>
    20. 

  20. Description:	CPU topology files that describe kernel limits related to
    21. 

  21. 		hotplug. Briefly:
    22. 

  22. 

  23. 		kernel_max: the maximum cpu index allowed by the kernel
    24. 

  24. 		configuration.
    25. 

  25. 

  26. 		offline: cpus that are not online because they have been
    27. 

  27. 		HOTPLUGGED off or exceed the limit of cpus allowed by the
    28. 

  28. 		kernel configuration (kernel_max above).
    29. 

  29. 

  30. 		online: cpus that are online and being scheduled.
    31. 

  31. 

  32. 		possible: cpus that have been allocated resources and can be
    33. 

  33. 		brought online if they are present.
    34. 

  34. 

  35. 		present: cpus that have been identified as being present in
    36. 

  36. 		the system.
    37. 

  37. 

  38. 		See Documentation/cputopology.txt for more information.
    39. 

  39. 

  40. 

  41. What:      /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X
    42. 

  42. Date:      August 2008
    43. 

  43. KernelVersion:	2.6.27
    44. 

  44. Contact:	mark.langsdorf@amd.com
    45. 

  45. Description:	These files exist in every cpu's cache index directories.
    46. 

  46. 		There are currently 2 cache_disable_# files in each
    47. 

  47. 		directory.  Reading from these files on a supported
    48. 

  48. 		processor will return that cache disable index value
    49. 

  49. 		for that processor and node.  Writing to one of these
    50. 

  50. 		files will cause the specificed cache index to be disabled.
    51. 

  51. 

  52. 		Currently, only AMD Family 10h Processors support cache index
    53. 

  53. 		disable, and only for their L3 caches.  See the BIOS and
    54. 

  54. 		Kernel Developer's Guide at
    55. 

  55. 		http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf
    56. 

  56. 		for formatting information and other details on the
    57. 

  57. 		cache index disable.
    58. 

  58. Users:    joachim.deguara@amd.com
    59.