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Groups > linux.kernel > #1575522

Re: memfill

From David Howells <dhowells@redhat.com>
Newsgroups linux.kernel
Subject Re: memfill
Date 2017-02-07 10:50 +0100
Message-ID <t8azo-16x-17@gated-at.bofh.it> (permalink)
References <t7SMb-6cu-31@gated-at.bofh.it> <t7wLE-AL-9@gated-at.bofh.it> <t7SMb-6cu-31@gated-at.bofh.it>
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Matthew Wilcox <willy@infradead.org> wrote:

> [adding linux-arch to see if anyone there wants to do an optimised
> version of memfill for their CPU]

For mn10300, this is superfluous since the memset() implementation will do
optimised filling of up to 8 x 4 bytes per loop if the alignments suit.

This is also superfluous for frv as that will do up to 8 x 8 bytes per loop.

So on both those arches, memfill() should probably just wrap memset().

David

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Thread

[PATCH v4] zram: extend zero pages to same element pages Minchan Kim <minchan@kernel.org> - 2017-02-05 16:20 +0100
  memfill Matthew Wilcox <willy@infradead.org> - 2017-02-06 15:50 +0100
    Re: memfill zhouxianrong <zhouxianrong@huawei.com> - 2017-02-07 03:50 +0100
    Re: memfill Minchan Kim <minchan@kernel.org> - 2017-02-07 06:10 +0100
    Re: memfill David Howells <dhowells@redhat.com> - 2017-02-07 10:50 +0100
      Re: memfill Matthew Wilcox <willy@infradead.org> - 2017-02-07 18:30 +0100
        Re: memfill David Howells <dhowells@redhat.com> - 2017-02-07 18:40 +0100
          Re: memfill Matthew Wilcox <willy@infradead.org> - 2017-02-07 20:10 +0100
    Re: memfill James Bottomley <James.Bottomley@HansenPartnership.com> - 2017-02-07 20:10 +0100
      Re: memfill James Bottomley <James.Bottomley@HansenPartnership.com> - 2017-02-08 22:10 +0100
        Re: memfill Matthew Wilcox <willy@infradead.org> - 2017-02-08 23:00 +0100
      Re: memfill Matthew Wilcox <willy@infradead.org> - 2017-02-08 23:10 +0100
  Re: [PATCH v4] zram: extend zero pages to same element pages Minchan Kim <minchan@kernel.org> - 2017-02-07 08:00 +0100

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