[PATCH RT 0/3] [ANNOUNCE] 3.4.3-rt12-rc1 stable review

[PATCH RT 0/3] [ANNOUNCE] 3.4.3-rt12-rc1 stable review

[Steven Rostedt]

Dear RT Folks,

This is the RT stable review cycle of patch 3.4.3-rt12-rc1.

Please scream at me if I messed something up. Please test the patches too.

The -rc release will be uploaded to kernel.org and will be deleted when
the final release is out. This is just a review release (or release candidate).

The pre-releases will not be pushed to the git repository, only the
final release is.

If all goes well, this patch will be converted to the next main release
on 6/24/2012.

Enjoy,

-- Steve


To build 3.4.3-rt12-rc1 directly, the following patches should be applied:

  http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.4.tar.xz

  http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.4.3.xz

  http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/patch-3.4.3-rt12-rc1.patch.xz

You can also build from 3.4.3-rt11 by applying the incremental patch:

http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/incr/patch-3.4.3-rt11-rt12-rc1.patch.xz


Changes from 3.4.3-rt11:

---


Steven Rostedt (2):
      spinlock/rt: Include bug.h in spinlock_rt.h to satisfy BUG() usage
      Linux 3.4.3-rt12-rc1

Thomas Gleixner (1):
      Oops during Init IRQ

----
 arch/powerpc/platforms/8xx/m8xx_setup.c |    1 +
 arch/powerpc/sysdev/cpm1.c              |    1 +
 include/linux/spinlock_rt.h             |    2 ++
 localversion-rt                         |    2 +-
 4 files changed, 5 insertions(+), 1 deletion(-)

[PATCH RT 1/3] spinlock/rt: Include bug.h in spinlock_rt.h to satisfy BUG() usage

[Steven Rostedt]

[-- Attachment #1: 0001-spinlock-rt-Include-bug.h-in-spinlock_rt.h-to-satisf.patch --]
[-- Type: text/plain, Size: 760 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

Some archs (powerpc) failed to compile because of the reference to
BUG() in spinlock_rt.h. Although bug.h is included in many headers,
if spinlock.h is included in a C file before that, it will fail to
compile.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 include/linux/spinlock_rt.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/spinlock_rt.h b/include/linux/spinlock_rt.h
index 3b555b4..0618387 100644
--- a/include/linux/spinlock_rt.h
+++ b/include/linux/spinlock_rt.h
@@ -5,6 +5,8 @@
 #error Do not include directly. Use spinlock.h
 #endif
 
+#include <linux/bug.h>
+
 extern void
 __rt_spin_lock_init(spinlock_t *lock, char *name, struct lock_class_key *key);
 
-- 
1.7.10

[PATCH RT 2/3] Oops during Init IRQ

[Steven Rostedt]

[-- Attachment #1: 0002-Oops-during-Init-IRQ.patch --]
[-- Type: text/plain, Size: 1497 bytes --]

From: Thomas Gleixner <tglx@linutronix.de>

On Mon, 18 Jun 2012, leroy christophe wrote:

> Hello,
>
> I'm trying to use the rt10 patch on a 3.4.2 kernel on a powerpc (MPC8xx)
> system, and I'm having the following Oops during Irq initialisation. This
> happens with CONFIG_PREEMPT_RT_FULL.
> It doesn't happen with CONFIG_PREEMPT__LL
>
> May someone help ?

Does the following uncompiled and untested patch fix it for you ?

Thanks,

	tglx

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: leroy christophe <christophe.leroy@c-s.fr>
---
 arch/powerpc/platforms/8xx/m8xx_setup.c |    1 +
 arch/powerpc/sysdev/cpm1.c              |    1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/8xx/m8xx_setup.c b/arch/powerpc/platforms/8xx/m8xx_setup.c
index 1e12108..806cbbd 100644
--- a/arch/powerpc/platforms/8xx/m8xx_setup.c
+++ b/arch/powerpc/platforms/8xx/m8xx_setup.c
@@ -43,6 +43,7 @@ static irqreturn_t timebase_interrupt(int irq, void *dev)
 
 static struct irqaction tbint_irqaction = {
 	.handler = timebase_interrupt,
+	.flags = IRQF_NO_THREAD,
 	.name = "tbint",
 };
 
diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c
index d4fa03f..5e6ff38 100644
--- a/arch/powerpc/sysdev/cpm1.c
+++ b/arch/powerpc/sysdev/cpm1.c
@@ -120,6 +120,7 @@ static irqreturn_t cpm_error_interrupt(int irq, void *dev)
 
 static struct irqaction cpm_error_irqaction = {
 	.handler = cpm_error_interrupt,
+	.flags = IRQF_NO_THREAD,
 	.name = "error",
 };
 
-- 
1.7.10

[PATCH RT 3/3] Linux 3.4.3-rt12-rc1

[Steven Rostedt]

[-- Attachment #1: 0003-Linux-3.4.3-rt12-rc1.patch --]
[-- Type: text/plain, Size: 285 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

---
 localversion-rt |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/localversion-rt b/localversion-rt
index 05c35cb..818ad14 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt11
+-rt12-rc1
-- 
1.7.10

Re: [PATCH RT 2/3] Oops during Init IRQ

[Thomas Gleixner]

On Fri, 22 Jun 2012, Steven Rostedt wrote:

You asked for a changelog. Here you go:

Subject: powerpc: Mark low level irq handlers NO_THREAD

These low level handlers cannot be threaded. Mark them NO_THREAD

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Re: [PATCH RT 2/3] Oops during Init IRQ

[Steven Rostedt]

On Sat, 2012-06-23 at 12:59 +0200, Thomas Gleixner wrote:
> On Fri, 22 Jun 2012, Steven Rostedt wrote:
> 
> You asked for a changelog. Here you go:
> 
> Subject: powerpc: Mark low level irq handlers NO_THREAD
> 
> These low level handlers cannot be threaded. Mark them NO_THREAD
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Thanks! I'll add this when I commit it into the git tree.

-- Steve