[PATCH 1/3] Adds a read-only "procs" file similar to "tasks" that shows only unique tgids

Li Zefan lizf at cn.fujitsu.com
Tue Jul 14 18:31:56 PDT 2009

Dave Hansen wrote:
> On Tue, 2009-07-14 at 14:26 -0700, Benjamin Blum wrote:
>> This method looks to be a compromise between Andrew's proposed
>> generalized solution ( http://lkml.org/lkml/2009/7/2/518 ) and the
>> current quick-fix. The problem with it is that it'll require a layer
>> between whoever's using the array and managing the list structs (for
>> the case where we need to chain multiple blocks together), and if
>> we're going to put forth enough effort for that, we may as well go
>> ahead and write up a generalized kernel-wide library to fix this size
>> problem globally.
> This "Andrew" guy seems to know what he's talking about. :)
> We've also got a set of pgarrs (struct page arrays) in the
> checkpoint/restart code that would make use of something generic like
> this.  

The dynamic-page-array thing sounds a right way to go. It's open-coded
in some other places, ring_buffer.c is one among.

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