Re: [PATCH RESEND v2 1/5] docs: kernel-parameters: Update to reflect the current default size of atomic pool

John Donnelly
2021-12-07T03:53:41Z

On 12/6/21 9:07 PM, Baoquan He wrote:
> Since commit 1d659236fb43("dma-pool: scale the default DMA coherent pool
> size with memory capacity"), the default size of atomic pool has been
> changed to take by scaling with system memory capacity. So update the
> document in kerenl-parameter.txt accordingly.
>
> Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: John Donnelly <john.p.donnelly@oracle.com>
Tested-by: John Donnelly <john.p.donnelly@oracle.com>

> ---
> Documentation/admin-guide/kernel-parameters.txt | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 9725c546a0d4..ec4d25e854a8 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -664,7 +664,9 @@
>
> coherent_pool=nn[KMG] [ARM,KNL]
> Sets the size of memory pool for coherent, atomic dma
> - allocations, by default set to 256K.
> + allocations. Otherwise the default size will be scaled
> + with memory capacity, while clamped between 128K and
> + 1 << (PAGE_SHIFT + MAX_ORDER-1).
>
> com20020= [HW,NET] ARCnet - COM20020 chipset
> Format:
>