[U-Boot] [PATCH v2 5/8] README: add info about skip memset at malloc init
Simon Glass
sjg at chromium.org
Wed Feb 18 05:32:14 CET 2015
Hi Przemyslaw,
On 16 February 2015 at 08:13, Przemyslaw Marczak <p.marczak at samsung.com> wrote:
> Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
> ---
> README | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/README b/README
> index fefa71c..8673640 100644
> --- a/README
> +++ b/README
> @@ -3989,6 +3989,13 @@ Configuration Settings:
> - CONFIG_SYS_MALLOC_LEN:
> Size of DRAM reserved for malloc() use.
>
> +- CONFIG_SYS_MALLOC_INIT_SKIP_ZEROING:
> + Do not set to zero the reserved DRAM area when init malloc.
> + For very big CONFIG_SYS_MALLOC_LEN(more than one MB), this will
> + reduce the boot time.
> + Before enabling this, please check if malloc calls, maybe
> + should be replaced by calloc - if expects zeroed memory.
> +
I think if you put this in Kconfig you can put this help there.
> - CONFIG_SYS_MALLOC_F_LEN
> Size of the malloc() pool for use before relocation. If
> this is defined, then a very simple malloc() implementation
(this one is in Kconfig now too)
Regards,
Simon
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