linux-toradex.git/arch/mips/kernel/smp.c, branch v2.6.16

[MIPS] SMP: Fix initialization order bug.

2006-02-27T17:30:36+00:00

    
A recent change requires cpu_possible_map to be initialized before
smp_sched_init() but most MIPS platforms were initializing their
processors in the prom_prepare_cpus callback of smp_prepare_cpus.  The
simple fix of calling prom_prepare_cpus from one of the earlier SMP
initialization hooks doesn't work well either since IPIs may require
init_IRQ() to have completed, so bit the bullet and split
prom_prepare_cpus into two initialization functions, plat_smp_setup
which is called early from setup_arch and plat_prepare_cpus called where
prom_prepare_cpus used to be called.
    
Signed-off-by: Ralf Baechle

[MIPS] Add topology_init.

2006-02-21T16:58:23+00:00

    
A recent patch introduced cpu topology in sysfs.  When you run a kernel
with SMP and sysfs enabled, you now get an Oops on boot. The following
patch fixes that by adding topology_init to arch/mips/kernel/smp.c. The
code is copied from arch/s390/kernel/smp.c.
    
Signed-off-by: Rojhalat Ibrahim 
Signed-off-by: Ralf Baechle

[PATCH] sched: disable preempt in idle tasks

2005-11-09T15:56:33+00:00

Run idle threads with preempt disabled.

Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()).
How did it ever work before?

Might fix the CPU hotplugging hang which Nigel Cunningham noted.

We think the bug hits if the idle thread is preempted after checking
need_resched() and before going to sleep, then the CPU offlined.

After calling stop_machine_run, the CPU eventually returns from preemption and
into the idle thread and goes to sleep.  The CPU will continue executing
previous idle and have no chance to call play_dead.

By disabling preemption until we are ready to explicitly schedule, this bug is
fixed and the idle threads generally become more robust.

From: alexs 

  PPC build fix

From: Yoichi Yuasa 

  MIPS build fix

Signed-off-by: Nick Piggin 
Signed-off-by: Yoichi Yuasa 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Delete old junk.

2005-10-29T18:32:04+00:00

Signed-off-by: Ralf Baechle

Make sure that the processor is actually online or die spectacularly.

2005-10-29T18:31:55+00:00

Signed-off-by: Ralf Baechle

Fix BogoMIPS display on UP and some minor cosmetical things.

2005-10-29T18:31:05+00:00

Signed-off-by: Ralf Baechle

Merge do_boot_cpu() into the new style __cpu_up().

2005-10-29T18:30:43+00:00

Signed-off-by: Ralf Baechle

Document why calling smp_call_function will deadlock when called with

2005-10-29T18:30:30+00:00

interrupts disabled.

Signed-off-by: Ralf Baechle

Linux-2.6.12-rc2

2005-04-16T22:20:36+00:00

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!