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New scheduler and interruptible blocking.

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A new scheduler replaces the old one.
  - There are no sched_xxx_notify() calls that ask scheduler to change task state.
  - Tasks now have priorities and different timeslices.
  - One second interval is distributed among processes.
  - There are just runnable and expired queues.
  - SCHED_GRANULARITY determines a maximum running boundary for tasks.
  - Scheduler can now detect a safe point and suspend a task.

Interruptible blocking is implemented.
  - Mutexes, waitqueues and ipc are modified to have an interruptible nature.
  - Sleep information is stored on the ktcb. (which waitqueue? etc.)
This commit is contained in:
Bahadir Balban
2008-10-01 12:43:44 +03:00
parent c54d505709
commit f6d0a79298
21 changed files with 681 additions and 429 deletions
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11
src/arch/arm/exception.c
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@@ -212,18 +212,27 @@ error:
;
}
void prefetch_abort_handler(u32 faulted_pc, u32 fsr, u32 far)
void prefetch_abort_handler(u32 faulted_pc, u32 fsr, u32 far, u32 lr)
{
set_abort_type(fsr, ARM_PABT);
if (check_aborts(faulted_pc, fsr, far) < 0) {
printascii("This abort can't be handled by any pager.\n");
goto error;
}
if (KERN_ADDR(lr))
goto error;
fault_ipc_to_pager(faulted_pc, fsr, far);
return;
error:
disable_irqs();
dprintk("Unhandled prefetch abort @ address: ", faulted_pc);
dprintk("FAR:", far);
dprintk("FSR:", fsr);
dprintk("LR:", lr);
printascii("Kernel panic.\n");
printascii("Halting system...\n");
while (1)
;
}