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Next April 28: boot failure on PowerPC with SLQB

Message ID 20090430064127.GF23746@wotan.suse.de (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Nick Piggin April 30, 2009, 6:41 a.m. UTC
On Thu, Apr 30, 2009 at 11:06:36AM +0530, Sachin Sant wrote:
> Nick Piggin wrote:
> >Well kmalloc is failing. It should not be though, even if the
> >current node is offline, it should be able to fall back to other
> >nodes. Stephen's trace indicates the same thing.
> >
> >Could you try the following patch please, and capture the output
> >it generates?
> With this patch i don't get any extra information other that what is 
> already reported.
> Have attached the boot log captured using loglevel=8 mminit_loglevel=4 
> options.

Hmm, forget that. Actually my last patch had a silly mistake because I
forgot MAX_ORDER shift is applied to PAGE_SIZE, rather than 1. So
kmalloc(PAGE_SIZE) was failing as too large.

This patch should do the trick I hope.

Thanks,
Nick
---
 include/linux/slqb_def.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Sachin P. Sant April 30, 2009, 9:47 a.m. UTC | #1
Nick Piggin wrote:
> Hmm, forget that. Actually my last patch had a silly mistake because I
> forgot MAX_ORDER shift is applied to PAGE_SIZE, rather than 1. So
> kmalloc(PAGE_SIZE) was failing as too large.
>
> This patch should do the trick I hope.
>   
Yes this patch fixed the issue for me. Thanks Nick.

Regards
-Sachin
> Thanks,
> Nick
> ---
>  include/linux/slqb_def.h |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> Index: linux-2.6/include/linux/slqb_def.h
> ===================================================================
> --- linux-2.6.orig/include/linux/slqb_def.h
> +++ linux-2.6/include/linux/slqb_def.h
> @@ -172,7 +172,8 @@ struct kmem_cache {
>  #endif
>
>  #define KMALLOC_SHIFT_LOW ilog2(KMALLOC_MIN_SIZE)
> -#define KMALLOC_SHIFT_SLQB_HIGH (PAGE_SHIFT + 9)
> +#define KMALLOC_SHIFT_SLQB_HIGH (PAGE_SHIFT + 			\
> +				 ((9 <= (MAX_ORDER - 1)) ? 9 : (MAX_ORDER - 1)))
>
>  extern struct kmem_cache kmalloc_caches[KMALLOC_SHIFT_SLQB_HIGH + 1];
>  extern struct kmem_cache kmalloc_caches_dma[KMALLOC_SHIFT_SLQB_HIGH + 1];
> --
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>
diff mbox

Patch

Index: linux-2.6/include/linux/slqb_def.h
===================================================================
--- linux-2.6.orig/include/linux/slqb_def.h
+++ linux-2.6/include/linux/slqb_def.h
@@ -172,7 +172,8 @@  struct kmem_cache {
 #endif
 
 #define KMALLOC_SHIFT_LOW ilog2(KMALLOC_MIN_SIZE)
-#define KMALLOC_SHIFT_SLQB_HIGH (PAGE_SHIFT + 9)
+#define KMALLOC_SHIFT_SLQB_HIGH (PAGE_SHIFT + 			\
+				 ((9 <= (MAX_ORDER - 1)) ? 9 : (MAX_ORDER - 1)))
 
 extern struct kmem_cache kmalloc_caches[KMALLOC_SHIFT_SLQB_HIGH + 1];
 extern struct kmem_cache kmalloc_caches_dma[KMALLOC_SHIFT_SLQB_HIGH + 1];