linux-kernel - Re: [PATCH] replace ida in workqueue with page-sized buffer

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Date:	Sat, 8 Jan 2011 12:57:21 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Hillf Danton <dhillf@...il.com>, Tejun Heo <tj@...nel.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] replace ida in workqueue with page-sized buffer


* Hillf Danton <dhillf@...il.com> wrote:

> On Sat, Dec 18, 2010 at 9:10 PM, Hillf Danton <dhillf@...il.com> wrote:
> > The id of worker of global work queue is monitored with kernel library, ida.
> >
> > The ida in global work queue is redefined to be page-sized buffer,
> > which is allocated when initializing workqueue.
> >
> > The new id allocator could monitor ids in the rage from 0 to INT_MAX.
> > The buffer is used to store freed ids, and if the peak number of ids,
> > in workqueue as whole, is not out of the capacity of the allocated
> > buffer, there is no more allocation of buffer after initializing.
> >
> > The advantage looks that the new allocator runs faster.
> >
> > Signed-off-by: Hillf Danton <dhillf@...il.com>
> 
> Hey Ingo
> 
> Please take a glance at the patch for replacing ida in workqueue at
> 
>        https://lkml.org/lkml/2010/12/18/35
> 

Tejun is driving workqueues these days. (I've Cc:-ed him.)

Thanks,

	Ingo
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