Re: 2.6.12-mm1 compile failure on PPC64

[Ingo Molnar <mingo@elte.hu>]

* Martin J. Bligh <mbligh@mbligh.org> wrote:

> kernel/built-in.o(.init.text+0x440): In function `.sched_cacheflush':
> : undefined reference to `.cacheflush'
> make: *** [.tmp_vmlinux1] Error 1
> 06/20/05-01:28:25 Build the kernel. Failed rc = 2
> 06/20/05-01:28:25 build: kernel build Failed rc = 1
> 06/20/05-01:28:25 command complete: (2) rc=126
> Failed and terminated the run
>  Fatal error, aborting autorun
> 
> Works with some configs, but not this one:
> 
> http://ftp.kernel.org/pub/linux/kernel/people/mbligh/config/abat/p570
> 
> I'm guessing :
> 
> scheduler-cache-hot-autodetect.patch

the patch below (from akpm) should fix this:

From: Andrew Morton <akpm@osdl.org>

Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 kernel/sched.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN kernel/sched.c~scheduler-cache-hot-autodetect-cacheflush-fix kernel/sched.c
--- 25/kernel/sched.c~scheduler-cache-hot-autodetect-cacheflush-fix	2005-06-18 08:38:26.000000000 -0600
+++ 25-akpm/kernel/sched.c	2005-06-18 08:38:43.000000000 -0600
@@ -5288,7 +5288,7 @@ __init static void sched_cacheflush(void
 	asm ("wbinvd");
 #elif defined(CONFIG_IA64)
 	ia64_sal_cache_flush(1); // what argument does d/cache flush?
-#elif defined(CONFIG_PPC64) || defined(CONFIG_PPC)
+#elif (defined(CONFIG_PPC64) || defined(CONFIG_PPC)) && defined(CONFIG_XMON)
 	cacheflush();
 #else
 # warning implement sched_cacheflush()! Calibration results may be unreliable.
_