Date: Fri, 8 Feb 2008 08:36:49 +0100 From: Ed Schouten <ed@fxq.nl> To: Pietro Cerutti <gahr@gahr.ch> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: uma_zcreate and number of items to create Message-ID: <20080208073649.GB94844@hoeg.nl> In-Reply-To: <47AB6B9E.1090605@gahr.ch> References: <47AB6B9E.1090605@gahr.ch>
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* Pietro Cerutti <gahr@gahr.ch> wrote:
> Before starting to hack it, I would like to know what you think about
> it. Do you find it useful or not?
I was thinking about this as well, because my TTY hackery could also use
this to preallocate cblocks to store characters from interrupts, but
then you could also just keep a free list to store them. You need to
allocate them anyway, so the space is already wasted.
Using your own per-{device,object,etc} free list should even be faster,
because uma probably has some per-zone spinlock, while you may not need
the locking in your specific situation (i.e. another lock already
protects it).
--=20
Ed Schouten <ed@fxq.nl>
WWW: http://g-rave.nl/
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