From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Stephane Eranian <eranian@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Lin Ming <ming.m.lin@intel.com>,
Ingo Molnar <mingo@elte.hu>, Andi Kleen <andi@firstfloor.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/7] perf: Check if HT is supported and enabled
Date: Tue, 04 Jan 2011 14:58:21 +0100 [thread overview]
Message-ID: <1294149501.2016.141.camel@laptop> (raw)
In-Reply-To: <AANLkTima_wh1Nd2E-zQAcymmux1O0e1GzVEdnhLEMOo5@mail.gmail.com>
On Tue, 2011-01-04 at 14:52 +0100, Stephane Eranian wrote:
>
> Couldn't you simply over-provision, and then when the CPU is online, use my
> ht_enabled statement to figure out whether or not you need to handle the sharing
> issue?
That's pretty much what Lin's latest does:
X86_FEATURE_HT && smp_num_siblings > 1
shows the CPU is capable of HT and will allocate the needed resources.
next prev parent reply other threads:[~2011-01-04 13:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-27 15:36 [PATCH 4/7] perf: Check if HT is supported and enabled Lin Ming
[not found] ` <AANLkTimp9VgD4qhOVmq-k1Ckzti9eeV8pf6Jvt5YB6nx@mail.gmail.com>
2010-12-28 8:51 ` Lin Ming
2011-01-03 10:58 ` Peter Zijlstra
2011-01-03 15:21 ` Andi Kleen
2011-01-03 19:53 ` H. Peter Anvin
2011-01-04 11:10 ` Peter Zijlstra
2011-01-04 13:38 ` Stephane Eranian
2011-01-04 13:44 ` Peter Zijlstra
2011-01-04 13:52 ` Stephane Eranian
2011-01-04 13:58 ` Peter Zijlstra [this message]
2011-01-04 15:35 ` Stephane Eranian
2011-01-04 19:00 ` H. Peter Anvin
2011-01-05 5:45 ` Lin Ming
2011-01-05 10:08 ` Peter Zijlstra
2011-01-04 18:55 ` Valdis.Kletnieks
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