iMX6 compilation fails with RT patch

iMX6 compilation fails with RT patch

[Arpit Goel]

Hi,

I am using 3.8.4 kernel with RT patch(patch-3.8.4-rt2.patch).
Patch was applied using "git apply" on kernel with Tag 3.8.4.

Compilation for ARM architecture fails for iMX6 using
imx_v6_v7_defconfig fails after following configuration flags are
enabled.

CONFIG_PREEMPT_RT_BASE
CONFIG_PREEMPT_RT_FULL

Compilation Error:

arch/arm/mach-imx/clk.c:3:1: error: expected '=', ',', ';', 'asm' or
'__attribute__' before '__cacheline_aligned_in_smp'

Toolchain -> Linaro ARM FSL toolchain (arm-fsl-linux-gnueabi-)

Regards
Arpit Goel

Re: iMX6 compilation fails with RT patch

[Sebastian Andrzej Siewior]

* Arpit Goel | 2013-04-03 11:36:10 [+0530]:

>Hi,
Hi,

>Compilation for ARM architecture fails for iMX6 using
>imx_v6_v7_defconfig fails after following configuration flags are
>enabled.
>
>CONFIG_PREEMPT_RT_BASE
builds

>CONFIG_PREEMPT_RT_FULL
does not

>Compilation Error:
>
>arch/arm/mach-imx/clk.c:3:1: error: expected '=', ',', ';', 'asm' or
>'__attribute__' before '__cacheline_aligned_in_smp'

I think to add

diff --git a/include/linux/spinlock_types_rt.h b/include/linux/spinlock_types_rt.h
index 1fe8fc0..9fd4319 100644
--- a/include/linux/spinlock_types_rt.h
+++ b/include/linux/spinlock_types_rt.h
@@ -5,6 +5,8 @@
 #error "Do not include directly. Include spinlock_types.h instead"
 #endif
 
+#include <linux/cache.h>
+
 /*
  * PREEMPT_RT: spinlocks - an RT mutex plus lock-break field:
  */


does it boot with this change?

>Regards
>Arpit Goel

Sebastian