linux-kernel - Re: [RFC 3/4] ARM: topology: Update cpu

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: <CAKfTPtDkRZJmfwmOeR6TPc5etbWRRneWAmN13X2_ace4wFwf7A@mail.gmail.com>
Date:	Wed, 13 Jun 2012 16:54:20 +0200
From:	Vincent Guittot <vincent.guittot@...aro.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linaro-dev@...ts.linaro.org, devicetree-discuss@...ts.ozlabs.org,
	linux@....linux.org.uk, grant.likely@...retlab.ca,
	rob.herring@...xeda.com
Subject: Re: [RFC 3/4] ARM: topology: Update cpu_power according to DT information

On 13 June 2012 15:07, Peter Zijlstra <peterz@...radead.org> wrote:
> On Tue, 2012-06-12 at 14:02 +0200, Vincent Guittot wrote:
>> +struct cpu_capacity cpu_capacity[NR_CPUS];
>
> I know ARM isn't likely to suffer from the 4k cpu issue, but is there a
> reason to use a NR_CPUS array over a per-cpu variable?

At this stage, we don't know which logical CPU will match which hwid.
During the boot of each CPU, we parse the table to found an efficiency
value for the booting CPU. The whole table is used by one CPU at a
time.
--
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/