03 Jun, 2007

1 commit

• f72267c30   [ARM] Solve buggy smp_processor_id() usage ... Browse Code »

  BUG: using smp_processor_id() in preemptible [00000001] code: opcontrol/427

  Resolve this bug by ensuring that we're not using smp_processor_id() in
  a preemptable context (by disabling preemption.)

  Signed-off-by: Russell King

  Russell King

  2007-06-03 04:31:49 +0800  

30 May, 2007

1 commit

• 28c670cb9   [ARM] oprofile: avoid lockdep warnings on mpcore oprofile init ... Browse Code »

  Fix lockdep warnings, caused by 'set_affinity' being called without
  the correct locks taken and local interrupts disabled:

  =================================
  [ INFO: inconsistent lock state ]
  2.6.22-rc2 #1
  ---------------------------------
  inconsistent {in-hardirq-W} -> {hardirq-on-W} usage.
  swapper/1 [HC0[0]:SC0[0]:HE1:SE1] takes:
  (irq_controller_lock){++..}, at: [] gic_set_cpu+0x60/0xa0
  {in-hardirq-W} state was registered at:
  [] lock_acquire+0x58/0x6c
  [] _spin_lock+0x40/0x50
  [] gic_mask_irq+0x2c/0x6c
  [] handle_level_irq+0x11c/0x14c
  [] asm_do_IRQ+0x60/0x84
  [] __irq_svc+0x4c/0xc0
  [] __alloc_bootmem_nopanic+0x74/0x88
  [] __alloc_bootmem+0x18/0x3c
  [] alloc_large_system_hash+0x16c/0x200
  [] inode_init_early+0x5c/0xa4
  [] vfs_caches_init_early+0x24/0xa0
  [] start_kernel+0x220/0x2fc
  [] 0x8078
  irq event stamp: 88438
  hardirqs last enabled at (88438): [] preempt_return+0x20/0x2c
  hardirqs last disabled at (88436): [] __do_softirq+0xb0/0x138
  softirqs last enabled at (88437): [] __do_softirq+0x104/0x138
  softirqs last disabled at (88428): [] irq_exit+0x68/0x7c

  other info that might help us debug this:
  no locks held by swapper/1.

  stack backtrace:
  [] (dump_stack+0x0/0x14) from [] (print_usage_bug+0x138/0x168)
  [] (print_usage_bug+0x0/0x168) from [] (mark_lock+0x484/0x6a0)
  [] (mark_lock+0x0/0x6a0) from [] (__lock_acquire+0x3c0/0x10c8)
  [] (__lock_acquire+0x0/0x10c8) from [] (lock_acquire+0x58/0x6c)
  [] (lock_acquire+0x0/0x6c) from [] (_spin_lock+0x40/0x50)
  [] (_spin_lock+0x0/0x50) from [] (gic_set_cpu+0x60/0xa0)
  [] (gic_set_cpu+0x0/0xa0) from [] (em_route_irq+0x38/0x40)
  [] (em_route_irq+0x0/0x40) from [] (em_setup+0x18/0xa4)
  [] (em_setup+0x0/0xa4) from [] (oprofile_arch_init+0x24/0xe8)
  [] (oprofile_arch_init+0x0/0xe8) from [] (oprofile_init+0x1c/0x64)
  [] (oprofile_init+0x0/0x64) from [] (kernel_init+0x154/0x368)
  [] (kernel_init+0x0/0x368) from [] (do_exit+0x0/0x904)
  oprofile: using arm/mpcore

  Signed-off-by: Russell King

  Russell King

  2007-05-30 20:15:15 +0800  

07 Feb, 2007

1 commit

• 10c03f696   [ARM] oprofile: add ARM11 SMP support ... Browse Code »

  Add the glue for ARM11 SMP oprofile support, which also supports the
  performance monitor in the coherency unit.

  Signed-off-by: Russell King

  Russell King

  2007-02-07 00:46:45 +0800