Re: [PATCH 1/4] [mm] buddy page allocator: add tunable big order allocation
- Date: Tue, 13 May 2008 11:09:02 +0900
- From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
- Subject: Re: [PATCH 1/4] [mm] buddy page allocator: add tunable big order allocation
On Mon, 12 May 2008 18:32:02 +0800
Bryan Wu <cooloney@xxxxxxxxxx> wrote:
> From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
>
> Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
> Signed-off-by: Bryan Wu <cooloney@xxxxxxxxxx>
Does this really solve your problem ? possible hang-up is better than
page allocation failure ?
> ---
> init/Kconfig | 9 +++++++++
> mm/page_alloc.c | 2 +-
> 2 files changed, 10 insertions(+), 1 deletions(-)
>
> diff --git a/init/Kconfig b/init/Kconfig
> index 6135d07..b6ff75b 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -742,6 +742,15 @@ config SLUB_DEBUG
> SLUB sysfs support. /sys/slab will not exist and there will be
> no support for cache validation etc.
>
> +config BIG_ORDER_ALLOC_NOFAIL_MAGIC
> + int "Big Order Allocation No FAIL Magic"
> + depends on EMBEDDED
> + range 3 10
> + default 3
> + help
> + Let big-order allocations loop until memory gets free. Specified Value
> + expresses the order.
> +
I think it's better to add a text to explain why this is for EMBEDED.
Thanks,
-Kame
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