From: Baoquan He <bhe@redhat.com>
To: 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, John.p.donnelly@oracle.com,
kexec@lists.infradead.org, Baoquan He <bhe@redhat.com>
Subject: [PATCH RESEND v2 1/5] docs: kernel-parameters: Update to reflect the current default size of atomic pool
Date: Tue, 7 Dec 2021 11:07:46 +0800 [thread overview]
Message-ID: <20211207030750.30824-2-bhe@redhat.com> (raw)
In-Reply-To: <20211207030750.30824-1-bhe@redhat.com>
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>
---
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:
--
2.17.2
next prev parent reply other threads:[~2021-12-07 3:08 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 ` Baoquan He [this message]
2021-12-07 3:53 ` [PATCH RESEND v2 1/5] docs: kernel-parameters: Update to reflect the current default size of atomic pool John Donnelly
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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