[patch 4/4] Remove unnecessary cpu maps (available, present_at_boot)

Anton Blanchard anton at samba.org
Sun Aug 1 13:49:20 EST 2004

Hi Nathan,

> With cpu_present_map, we don't need these any longer.

Thanks for all those patches. I tested them on current BK together with
Srivatsa's cpu up race and managed to get an oops:

cpu 1 (hwid 1) Ready to die...
cpu 3 (hwid 3) Ready to die...
cpu 0x5: Vector: 300 (Data Access) at [c000000002d2f4b0]
    pc: c00000000004b794: .find_busiest_group+0x290/0x450
    lr: c00000000004b6c0: .find_busiest_group+0x1bc/0x450
    sp: c000000002d2f730
   msr: 8000000000001032
   dar: 18
 dsisr: 40000000
  current = 0xc000000002909320
  paca    = 0xc00000000054ed00
    pid   = 2928, comm = kstopmachine
enter ? for help

Which is probably due to the SMT scheduler, at least it disappeared
after I disabled the SMT scheduler config option. So it should go away
once we get your hotplug fixes for sched domains merged.

These 4 look good to merge once we work out the query cpu state rtas
call issue.


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