linux-kernel - Re: [PATCH] Priority heap infrastructure enhancements

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <485CC1AF.5060901@linux.vnet.ibm.com>
Date:	Sat, 21 Jun 2008 14:24:07 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Paul Menage <menage@...gle.com>
CC:	akpm@...ux-foundation.org, containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Priority heap infrastructure enhancements

Paul Menage wrote:
> On Sat, Jun 21, 2008 at 1:05 AM, Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
>> I would like to be able to drop the smallest value. Since we cannot drop the
>> smallest value, dropping a leaf (heap->size) should be sufficiently good enough.
>> I want a max heap and losing the root of the heap does not work for me.
>>
> 
> What are you actually trying to do? Can you get round this by just
> inverting your "gt" operator? i.e. provide one that actually
> implements "less-than"?

Paul,

That would convert the entire heap to a min-heap. With my soft limit patches,
that I am working on for the memory controller; I want the controller that has
exceeded it's soft limit by the maximum amount to be picked off the heap, so
that we can reclaim from it on memory contention.

Ideally, I would also like to be able to find an existing node in the heap, but
that is hard. I can work around that problem for now.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/