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From: Baoquan He <bhe@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, x86@kernel.org, rientjes@google.com,
rppt@linux.ibm.com, thomas.lendacky@amd.com,
brijesh.singh@amd.com, kexec@lists.infradead.org, bhe@redhat.com
Subject: [PATCH 1/2] docs: kernel-parameters: Update to reflect the current default size of atomic pool
Date: Thu, 24 Jun 2021 13:20:09 +0800 [thread overview]
Message-ID: <20210624052010.5676-2-bhe@redhat.com> (raw)
In-Reply-To: <20210624052010.5676-1-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 cb89dbdedc46..2c5017db2621 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -623,7 +623,9 @@
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:[~2021-06-24 5:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 5:20 [PATCH RFC 0/2] dma-pool: allow user to disable atomic pool Baoquan He
2021-06-24 5:20 ` Baoquan He [this message]
2021-06-24 5:20 ` [PATCH 2/2] " Baoquan He
2021-06-24 7:40 ` [PATCH RFC 0/2] " Christoph Hellwig
2021-06-24 9:29 ` Baoquan He
2021-06-24 10:47 ` Robin Murphy
2021-06-24 12:10 ` Christoph Hellwig
2021-08-05 6:54 ` Baoquan He
2021-08-10 20:52 ` Tom Lendacky
2021-08-11 2:23 ` Baoquan He
2021-08-11 13:46 ` Tom Lendacky
2021-08-11 5:52 ` Christoph Hellwig
2021-12-17 9:08 [PATCH 0/2] Clean up document and small improvement of " Baoquan He
2021-12-17 9:08 ` [PATCH 1/2] docs: kernel-parameters: Update to reflect the current default size " Baoquan He
2021-12-21 8:50 ` Christoph Hellwig
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