Re: [PATCH 2 of 4] Introduce i386 fibril scheduling

[Matt Mackall]

On Sat, Feb 03, 2007 at 09:23:08AM +0100, Ingo Molnar wrote:
> The normal and most optimal workflow should be a user-space ring-buffer 
> of these constant-size struct async_syscall entries:
> 
>   struct async_syscall ringbuffer[1024];
> 
>   LIST_HEAD(submitted);
>   LIST_HEAD(pending);
>   LIST_HEAD(completed);

It's wrong to call this a ring buffer as things won't be completed in
any particular order. So you'll need a fourth list head for which
buffer elements are free. At which point, you might as well leave it
entirely up to the application to manage the allocation of
async_syscall structs. It may know it only needs two, or ten thousand,
or five per client...

-- 
Mathematics is the supreme nostalgia of our time.
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