Hello Thomas and others,
I have tried to build patch-2.6.19-rt1 patched 2.6.19 kernel
for MX1 (PiMX1). There seems to be some problems.
One is corrected by attached patch, there is another one
I have not solved yet
make ARCH=arm CROSS_COMPILE=arm-linux- -C /usr/src/linux-2.6.19-rt O=/usr/src/l
inux-2.6.19-rt/_build/arm
CHK include/linux/version.h
...
LD init/built-in.o
LD .tmp_vmlinux1
arch/arm/kernel/built-in.o(.text+0x40c0): In function `do_settimeofday':
/usr/src/linux-2.6.19-rt/include/linux/hrtimer.h:264: undefined reference to
`warp_check_clock_was_changed'
kernel/built-in.o(.text+0xa6bc): In function `do_sys_settimeofday':
/usr/src/linux-2.6.19-rt/kernel/time.c:138: undefined reference to
`warp_check_clock_was_changed'
kernel/built-in.o(.text+0xa700): In function `do_sys_settimeofday':
/usr/src/linux-2.6.19-rt/include/linux/hrtimer.h:264: undefined reference to
`warp_check_clock_was_changed'
kernel/built-in.o(.text+0x1dfec): In function `hrtimer_notify_resume':
/usr/src/linux-2.6.19-rt/include/linux/hrtimer.h:264: undefined reference to
`warp_check_clock_was_changed'
kernel/built-in.o(.text+0x1f62c): In function `second_overflow':
/usr/src/linux-2.6.19-rt/include/linux/hrtimer.h:264: undefined reference to
`warp_check_clock_was_changed'
kernel/built-in.o(.text+0x1f674):/usr/src/linux-2.6.19-rt/include/linux/hrtimer.h:264:
more undefined references to `warp_check_clock_was_changed' follow
kernel/built-in.o(.text+0x2745c): In function `setup_preempt_thresh':
/usr/src/linux-2.6.19-rt/kernel/latency_trace.c:1647: undefined reference to
`usecs_to_cycles'
Have you idea where is a problem or should I dig deeper.
There is required next simple change for ARM architectures < 6
-----------------------------------------------------------------------------------
include/asm-arm/atomic.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux-2.6.19-rt/include/asm-arm/atomic.h
===================================================================
--- linux-2.6.19-rt.orig/include/asm-arm/atomic.h
+++ linux-2.6.19-rt/include/asm-arm/atomic.h
@@ -188,10 +188,10 @@ static inline unsigned long __cmpxchg(vo
volatile unsigned long *p = ptr;
if (size == 4) {
- local_irq_save(flags);
+ raw_local_irq_save(flags);
if ((prev = *p) == old)
*p = new;
- local_irq_restore(flags);
+ raw_local_irq_restore(flags);
return(prev);
} else
return wrong_size_cmpxchg(ptr);
-----------------------------------------------------------------------------------
Best wishes
Pavel Pisa
e-mail: [EMAIL PROTECTED]
www: http://cmp.felk.cvut.cz/~pisa
work: http://www.pikron.com
PS: Please CC to me, I am not on the list
PS2: Thomas, have you already found time to look at my e-mails/questions/patches
about SC520 and i.MX HRT and Profibus.
( The initial version of Tran's Profibus work can be loaded
at http://sourceforge.net/projects/pbmaster )
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