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[PATCH V2 2/2] powerpc:numa Do not allocate bootmem memory for non existing nodes

Started byRaghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
First post2015-09-15 04:10 +0200
Last post2015-09-22 07:30 +0200
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  [PATCH V2  2/2] powerpc:numa Do not allocate bootmem memory for non existing nodes Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> - 2015-09-15 04:10 +0200
    Re: [PATCH V2  2/2] powerpc:numa Do not allocate bootmem memory for  non existing nodes Michael Ellerman <mpe@ellerman.id.au> - 2015-09-22 07:30 +0200

#1224589 — [PATCH V2 2/2] powerpc:numa Do not allocate bootmem memory for non existing nodes

FromRaghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Date2015-09-15 04:10 +0200
Subject[PATCH V2 2/2] powerpc:numa Do not allocate bootmem memory for non existing nodes
Message-ID<q8NQZ-7HD-7@gated-at.bofh.it>
Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
---
 arch/powerpc/mm/numa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 8b9502a..8d8a541 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -80,7 +80,7 @@ static void __init setup_node_to_cpumask_map(void)
 		setup_nr_node_ids();
 
 	/* allocate the map */
-	for (node = 0; node < nr_node_ids; node++)
+	for_each_node(node)
 		alloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
 
 	/* cpumask_of_node() will now work */
-- 
1.7.11.7

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#1229908 — Re: [PATCH V2 2/2] powerpc:numa Do not allocate bootmem memory for non existing nodes

FromMichael Ellerman <mpe@ellerman.id.au>
Date2015-09-22 07:30 +0200
SubjectRe: [PATCH V2 2/2] powerpc:numa Do not allocate bootmem memory for non existing nodes
Message-ID<qbojn-4l9-7@gated-at.bofh.it>
In reply to#1224589
On Tue, 2015-09-15 at 07:38 +0530, Raghavendra K T wrote:
>
> ... nothing

Sure this patch looks obvious, but please give me a changelog that proves
you've thought about it thoroughly.

For example is it OK to use for_each_node() at this point in boot? Is there any
historical reason why we did it with a hard coded loop? If so what has changed.
What systems have you tested on? etc. etc.

cheers

> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
> ---
>  arch/powerpc/mm/numa.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
> index 8b9502a..8d8a541 100644
> --- a/arch/powerpc/mm/numa.c
> +++ b/arch/powerpc/mm/numa.c
> @@ -80,7 +80,7 @@ static void __init setup_node_to_cpumask_map(void)
>  		setup_nr_node_ids();
>  
>  	/* allocate the map */
> -	for (node = 0; node < nr_node_ids; node++)
> +	for_each_node(node)
>  		alloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
>  
>  	/* cpumask_of_node() will now work */




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