linux-toradex.git/arch/powerpc/kernel, branch v3.2.2-rt10

Merge commit 'v3.2.1' into rt-3.2.1-rt10

2012-01-16T19:03:35+00:00

softirq-disable-softirq-stacks-for-rt.patch

2012-01-16T19:00:27+00:00

Signed-off-by: Thomas Gleixner

early-printk-consolidate.patch

2012-01-16T19:00:12+00:00

Signed-off-by: Thomas Gleixner

preempt-mark-legitimated-no-resched-sites.patch

2012-01-16T19:00:07+00:00

Signed-off-by: Thomas Gleixner

sched: Use schedule_preempt_disabled()

2012-01-16T19:00:05+00:00

Coccinelle based conversion.

Signed-off-by: Thomas Gleixner

powerpc: Mark IPI interrupts IRQF_NO_THREAD

2012-01-16T19:00:04+00:00

IPI handlers cannot be threaded. Remove the obsolete IRQF_DISABLED
flag (see commit e58aa3d2) while at it.

Signed-off-by: Thomas Gleixner

powerpc/time: Handle wrapping of decrementer

2012-01-12T19:29:22+00:00

commit 37fb9a0231ee43d42d069863bdfd567fca2b61af upstream.

When re-enabling interrupts we have code to handle edge sensitive
decrementers by resetting the decrementer to 1 whenever it is negative.
If interrupts were disabled long enough that the decrementer wrapped to
positive we do nothing. This means interrupts can be delayed for a long
time until it finally goes negative again.

While we hope interrupts are never be disabled long enough for the
decrementer to go positive, we have a very good test team that can
drive any kernel into the ground. The softlockup data we get back
from these fails could be seconds in the future, completely missing
the cause of the lockup.

We already keep track of the timebase of the next event so use that
to work out if we should trigger a decrementer exception.

Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc/signal32: Fix sigset_t conversion when copying to user

2011-11-17T05:41:10+00:00

On PPC64, put_sigset_t converts a sigset_t to a compat_sigset_t
before copying it to userspace. There is a typo in the case that
we have 4 words to copy, meaning that we corrupt the compat_sigset_t.

It appears that _NSIG_WORDS can't be greater than 2 at the moment
so this code is probably always optimised away anyway.

Signed-off-by: Will Deacon 
Signed-off-by: Benjamin Herrenschmidt

powerpc/book3e-64: Fix debug support for userspace

2011-11-17T05:26:07+00:00

With the introduction of CONFIG_PPC_ADV_DEBUG_REGS user space debug is
broken on Book-E 64-bit parts that support delayed debug events.  When
switch_booke_debug_regs() sets DBCR0 we'll start getting debug events as
MSR_DE is also set and we aren't able to handle debug events from kernel
space.

We can remove the hack that always enables MSR_DE and loads up DBCR0 and
just utilize switch_booke_debug_regs() to get user space debug working
again.

We still need to handle critical/debug exception stacks & proper
save/restore of state for those exception levles to support debug events
from kernel space like we have on 32-bit.

Signed-off-by: Kumar Gala 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Remove extraneous CONFIG_PPC_ADV_DEBUG_REGS define

2011-11-17T05:26:07+00:00

All of DebugException is already protected by CONFIG_PPC_ADV_DEBUG_REGS
there is no need to have another such ifdef inside the function.

Signed-off-by: Kumar Gala 
Signed-off-by: Benjamin Herrenschmidt