From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] memblock: stop using implicit alignement to SMP_CACHE_BYTES
Date: Fri, 05 Oct 2018 13:25:38 +1000 [thread overview]
Message-ID: <8891277c7de92e93d3bfc409df95810ee6f103cd.camel@kernel.crashing.org> (raw)
In-Reply-To: <1538687224-17535-1-git-send-email-rppt@linux.vnet.ibm.com>
On Fri, 2018-10-05 at 00:07 +0300, Mike Rapoport wrote:
> When a memblock allocation APIs are called with align = 0, the alignment is
> implicitly set to SMP_CACHE_BYTES.
>
> Replace all such uses of memblock APIs with the 'align' parameter explicitly
> set to SMP_CACHE_BYTES and stop implicit alignment assignment in the
> memblock internal allocation functions.
>
> For the case when memblock APIs are used via helper functions, e.g. like
> iommu_arena_new_node() in Alpha, the helper functions were detected with
> Coccinelle's help and then manually examined and updated where appropriate.
>
> The direct memblock APIs users were updated using the semantic patch below:
What is the purpose of this ? It sounds rather counter-intuitive...
Ben.
next prev parent reply other threads:[~2018-10-05 3:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-04 21:07 [PATCH] memblock: stop using implicit alignement to SMP_CACHE_BYTES Mike Rapoport
2018-10-05 3:25 ` Benjamin Herrenschmidt [this message]
2018-10-05 15:05 ` Mike Rapoport
2018-10-05 22:19 ` Andrew Morton
2018-10-11 6:08 ` Mike Rapoport
2018-10-09 23:01 ` Paul Burton
2018-10-10 7:58 ` Michal Hocko
2018-10-10 12:04 ` Michael Ellerman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8891277c7de92e93d3bfc409df95810ee6f103cd.camel@kernel.crashing.org \
--to=benh@kernel.crashing.org \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).