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Re: [PATCH v4 0/8] Multibyte memset variations

From Matthew Wilcox <willy@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH v4 0/8] Multibyte memset variations
Date 2017-07-25 15:10 +0200
Message-ID <u77L4-3dw-11@gated-at.bofh.it> (permalink)
References <u5oGl-2GI-3@gated-at.bofh.it> <u70zT-78Y-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, Jul 25, 2017 at 03:27:38PM +1000, Michael Ellerman wrote:
> Matthew Wilcox <willy@infradead.org> writes:
> 
> > From: Matthew Wilcox <mawilcox@microsoft.com>
> >
> > A relatively common idiom we're missing is a function to fill an area
> > of memory with a pattern which is larger than a single byte.  I first
> > noticed this with a zram patch which wanted to fill a page with an
> > 'unsigned long' value.  There turn out to be quite a few places in
> > the kernel which can benefit from using an optimised function rather
> > than a loop; sometimes text size, sometimes speed, and sometimes both.
> > The optimised PowerPC version (not included here) improves performance
> > by about 30% on POWER8 on just the raw memset_l().
> 
> Is the plan that Andrew will merge this series, or are you planning to
> put them in a tree of yours?

I'm hoping Andrew will take it, but I can put it in my own tree if he
doesn't want to take it.

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[PATCH v4 0/8] Multibyte memset variations Matthew Wilcox <willy@infradead.org> - 2017-07-20 20:50 +0200
  [PATCH v4 6/8] zram: Convert to using memset_l Matthew Wilcox <willy@infradead.org> - 2017-07-20 20:50 +0200
  Re: [PATCH v4 0/8] Multibyte memset variations Michael Ellerman <mpe@ellerman.id.au> - 2017-07-25 07:30 +0200
    Re: [PATCH v4 0/8] Multibyte memset variations Matthew Wilcox <willy@infradead.org> - 2017-07-25 15:10 +0200

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