Re: [PATCH 0/7] kfifo: new API v0.6
From: Stefani Seibold
Date: Sun Oct 25 2009 - 04:12:41 EST
Am Sonntag, den 25.10.2009, 02:48 +0100 schrieb Andi Kleen:
> On Sat, Oct 24, 2009 at 03:33:14PM +0200, Stefani Seibold wrote:
> > This is a new generic kernel FIFO implementation.
> > The current kernel fifo API is not very widely used, because it has to many
> > constrains. Only 17 files in the current 2.6.31-rc5 used it. FIFO's are
> > like list's a very basic thing and a kfifo API which handles the most use
> > case would save a lot of development time and memory resources.
> > I think this are the reasons why kfifo is not in use:
> > - The API is to simple, important functions are missing
> > - A fifo can be only allocated dynamically
> > - There is a need of a spinlock despite you need it or not
> > - There is no support for data records inside a fifo
> I have some plans to use this kfifo code in upcoming code (mostly
> as a very simple lower overhead NMI safe per CPU fifo). I would appreciate
> if it could be merged ASAP
> I didn't review this iteration, but earlier ones.
There was no modification in the code since the last version. I added
only the function kfifo_avail_rec which has no site effect to the rest
of the code.
> Acked-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
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