Re: [PATCH 0/4] WorkStruct: Shrink work_struct by two thirds

From: Trond Myklebust
Date: Mon Nov 20 2006 - 11:32:55 EST


On Mon, 2006-11-20 at 14:27 +0000, David Howells wrote:
>
> The workqueue struct is huge, and this limits it's usefulness. On a 64-bit
> architecture it's nearly 100 bytes in size, of which the timer_list is half.
> These patches shrink work_struct by 8 of the 12 words it ordinarily consumes.
> This is done by:
>
> (1) Splitting the timer out so that delayable work items are defined by a
> separate structure which incorporates a basic work_struct and a timer.

Why not simply add a timer argument to 'queue_delayed_work()' and
'cancel_delayed_work()'? That may allow you to reuse an existing timer
struct if you already have it embedded somewhere else.

Cheers
Trond

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