linux-kernel - Re: [PATCH V2 1/8] perf/x86/intel/P4: Fix smp_num

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Message-ID: <Yvtst7ga6TaMsHeb@worktop.programming.kicks-ass.net>
Date:   Tue, 16 Aug 2022 12:08:55 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Zhang Rui <rui.zhang@...el.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        linux-hwmon@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com,
        corbet@....net, fenghua.yu@...el.com, jdelvare@...e.com,
        linux@...ck-us.net, len.brown@...el.com
Subject: Re: [PATCH V2 1/8] perf/x86/intel/P4: Fix smp_num_siblings usage

On Tue, Aug 16, 2022 at 05:47:14PM +0800, Zhang Rui wrote:
> On Tue, 2022-08-16 at 10:27 +0200, Peter Zijlstra wrote:
> > On Tue, Aug 16, 2022 at 01:16:26PM +0800, Zhang Rui wrote:
> > > smp_num_siblings can be larger than 2.
> > > 
> > > Any value larger than 1 suggests HT is supported.
> > 
> > Subject and Changelog are still utterly insane.
> 
> what about this one, do I need to resend the full series?
> 
> thanks,
> rui
> 
> From 2e368e6afa83cb73e44ac8c3cf8339207097d9e1 Mon Sep 17 00:00:00 2001
> From: Zhang Rui <rui.zhang@...el.com>
> Date: Tue, 28 Jun 2022 11:02:12 +0800
> Subject: [PATCH V3 1/8] perf/x86/intel/P4: unify logic for detecting HT
> 
> Any value larger than 1 suggests HT is supported.
> 
> Although smp_num_siblings cannot be larger than 2 on P4 platform, it is
> better to keep this logic consistent across the kernel.
> 
> Reviewed-by: Len Brown <len.brown@...el.com>
> Signed-off-by: Zhang Rui <rui.zhang@...el.com>

Yes that works for me; thanks!