From: Peter Zijlstra <peterz@infradead.org>
To: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Arjan van de Ven <arjan@linux.intel.com>,
x86@kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] smpboot: reuse timer calibration
Date: Tue, 29 Oct 2019 15:35:47 +0100 [thread overview]
Message-ID: <20191029143547.GO4114@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <ebb16cf3-128d-2515-a98a-a58db0c1f963@molgen.mpg.de>
On Tue, Oct 29, 2019 at 03:19:57PM +0100, Paul Menzel wrote:
> From: Arjan van de Ven <arjan@linux.intel.com>
> Date: Wed, 11 Feb 2015 17:28:14 -0600
>
> NO point recalibrating for known-constant tsc ...
> saves 200ms+ of boot time.
>
> Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
> ---
>
> Arjan, can your Signed-off-by line be added? On what device, did you test
> this?
This patch makes no sense what so ever given the current function, also
it hard codes 0 as being the BSP.
All of this for platforms (!constant_tsc) that barely exist anymore.
next prev parent reply other threads:[~2019-10-29 14:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-29 14:19 Paul Menzel
2019-10-29 14:35 ` Peter Zijlstra [this message]
2019-11-05 10:05 ` Thomas Gleixner
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