From: John Donnelly <John.p.donnelly@oracle.com>
To: Baoquan He <bhe@redhat.com>, linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, akpm@linux-foundation.org, hch@lst.de,
robin.murphy@arm.com, cl@linux.com, penberg@kernel.org,
rientjes@google.com, iamjoonsoo.kim@lge.com, vbabka@suse.cz,
m.szyprowski@samsung.com, kexec@lists.infradead.org
Subject: Re: [PATCH RESEND v2 1/5] docs: kernel-parameters: Update to reflect the current default size of atomic pool
Date: Mon, 6 Dec 2021 21:53:03 -0600 [thread overview]
Message-ID: <31e002fd-e796-06a0-4a21-1dc02411d8b7@oracle.com> (raw)
In-Reply-To: <20211207030750.30824-2-bhe@redhat.com>
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:
>
next prev parent reply other threads:[~2021-12-07 3:53 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 3:07 [PATCH RESEND v2 0/5] Avoid requesting page from DMA zone when no managed pages Baoquan He
2021-12-07 3:07 ` [PATCH RESEND v2 1/5] docs: kernel-parameters: Update to reflect the current default size of atomic pool Baoquan He
2021-12-07 3:53 ` John Donnelly [this message]
2021-12-07 3:07 ` [PATCH RESEND v2 2/5] dma-pool: allow user to disable " Baoquan He
2021-12-07 3:53 ` John Donnelly
2021-12-13 7:44 ` Christoph Hellwig
2021-12-13 8:16 ` Baoquan He
2021-12-07 3:07 ` [PATCH RESEND v2 3/5] mm_zone: add function to check if managed dma zone exists Baoquan He
2021-12-07 3:53 ` John Donnelly
2021-12-07 11:23 ` David Hildenbrand
2021-12-09 13:02 ` Baoquan He
2021-12-09 13:10 ` David Hildenbrand
2021-12-09 13:23 ` Baoquan He
2021-12-07 3:07 ` [PATCH RESEND v2 4/5] dma/pool: create dma atomic pool only if dma zone has managed pages Baoquan He
2021-12-07 3:54 ` John Donnelly
2021-12-07 3:07 ` [PATCH RESEND v2 5/5] mm/slub: do not create dma-kmalloc if no managed pages in DMA zone Baoquan He
2021-12-07 3:54 ` John Donnelly
2021-12-07 3:16 ` [PATCH RESEND v2 0/5] Avoid requesting page from DMA zone when no managed pages Baoquan He
2021-12-07 4:03 ` John Donnelly
2021-12-08 4:33 ` Andrew Morton
2021-12-08 4:56 ` John Donnelly
2021-12-13 3:54 ` Baoquan He
[not found] ` <YbdJ00wRFvi0aqze@zn.tnic>
2021-12-13 14:03 ` Baoquan He
2021-12-07 8:05 ` Christoph Lameter
2021-12-09 8:05 ` Baoquan He
2021-12-09 12:59 ` Christoph Lameter
2021-12-13 7:39 ` Baoquan He
2021-12-13 7:49 ` Christoph Hellwig
2021-12-13 7:47 ` Christoph Hellwig
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