From: Thomas Gleixner <tglx@kernel.org>
To: Petr Mladek <pmladek@suse.com>, "Bird, Tim" <Tim.Bird@sony.com>
Cc: Michael Kelley <mhklinux@outlook.com>,
"rostedt@goodmis.org" <rostedt@goodmis.org>,
"senozhatsky@chromium.org" <senozhatsky@chromium.org>,
"francesco@valla.it" <francesco@valla.it>,
"geert@linux-m68k.org" <geert@linux-m68k.org>,
"linux-embedded@vger.kernel.org" <linux-embedded@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
John Stultz <jstultz@google.com>, Stephen Boyd <sboyd@kernel.org>,
John Ogness <john.ogness@linutronix.de>
Subject: Re: [PATCH v3] printk: fix zero-valued printk timestamps in early boot
Date: Sat, 28 Mar 2026 16:56:04 +0100 [thread overview]
Message-ID: <87mrzsaqy3.ffs@tglx> (raw)
In-Reply-To: <abPqrqgXHnDu8XWf@pathway>
On Fri, Mar 13 2026 at 11:45, Petr Mladek wrote:
> [ 9.296302] cpuidle: using governor menu
>
> Here the thermal governors are registered. I guess that they might
> reduce speed of some HW.
No. The frequency of the TSC and KVM clock are stable. For TSC that's
only true for CPUs which have X86_FEATURE_CONSTANT_TSC set, which is the
case for every x86 CPU shipped in the last 20 years.
Thanks,
tglx
next prev parent reply other threads:[~2026-03-28 15:56 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-25 5:30 [PATCH] printk: add early_counter_ns routine for printk blind spot Tim Bird
2025-11-25 7:52 ` kernel test robot
2025-11-25 13:08 ` Francesco Valla
2025-11-26 7:38 ` Geert Uytterhoeven
2025-11-27 0:16 ` Bird, Tim
2025-11-27 16:16 ` Petr Mladek
2025-11-26 12:55 ` Petr Mladek
2025-11-27 0:03 ` Bird, Tim
2025-11-26 11:13 ` Petr Mladek
2025-11-27 9:13 ` kernel test robot
2026-01-24 19:40 ` [PATCH v2] printk: fix zero-valued printk timestamps in early boot Tim Bird
2026-01-25 14:41 ` Francesco Valla
2026-01-26 16:52 ` Bird, Tim
2026-02-02 16:23 ` Petr Mladek
2026-01-26 10:12 ` Geert Uytterhoeven
2026-01-26 17:11 ` Bird, Tim
2026-01-27 8:10 ` Geert Uytterhoeven
2026-02-10 23:47 ` [PATCH v3] " Tim Bird
2026-03-04 11:23 ` Petr Mladek
2026-03-09 17:27 ` Shashank Balaji
2026-03-10 10:43 ` Petr Mladek
2026-03-10 19:17 ` Bird, Tim
2026-03-09 19:25 ` Shashank Balaji
2026-03-10 11:39 ` Petr Mladek
2026-03-10 18:54 ` Bird, Tim
2026-03-11 15:45 ` Petr Mladek
2026-03-11 15:47 ` Michael Kelley
2026-03-13 4:52 ` Bird, Tim
2026-03-13 10:45 ` Petr Mladek
2026-03-14 14:16 ` Shashank Balaji
2026-03-24 20:07 ` Bird, Tim
2026-03-14 16:15 ` Michael Kelley
2026-03-24 19:47 ` Bird, Tim
2026-03-26 9:24 ` John Ogness
2026-03-27 18:04 ` Bird, Tim
2026-03-20 18:15 ` Bird, Tim
2026-03-28 15:56 ` Thomas Gleixner [this message]
2026-03-26 13:17 ` Thomas Gleixner
2026-03-27 18:48 ` Bird, Tim
2026-03-28 21:59 ` Thomas Gleixner
2026-03-29 22:42 ` Thomas Gleixner
2026-03-30 12:05 ` Peter Zijlstra
2026-03-30 13:38 ` David Laight
2026-04-07 20:34 ` Earlier tsc init patch (was RE: [PATCH v3] printk: fix zero-valued printk timestamps in early boot) Bird, Tim
2026-03-30 20:42 ` [PATCH v3] printk: fix zero-valued printk timestamps in early boot Bird, Tim
2026-03-31 8:17 ` Geert Uytterhoeven
2026-03-31 9:10 ` Thomas Gleixner
2026-03-31 23:36 ` Thomas Gleixner
2026-04-01 0:05 ` Steven Rostedt
2026-04-01 7:36 ` Geert Uytterhoeven
2026-04-01 8:33 ` Thomas Gleixner
2026-04-01 15:12 ` Steven Rostedt
2026-04-01 19:37 ` Thomas Gleixner
2026-04-01 1:16 ` Brian Masney
2026-04-01 9:19 ` Thomas Gleixner
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