From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
To: Giovanni Gherdovich <ggherdovich@suse.cz>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Borislav Petkov <bp@suse.de>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/3] x86, sched: Bail out of frequency invariance if turbo frequency is unknown
Date: Mon, 1 Jun 2020 16:34:18 -0700 [thread overview]
Message-ID: <20200601233418.GA15416@ranerica-svr.sc.intel.com> (raw)
In-Reply-To: <20200531182453.15254-3-ggherdovich@suse.cz>
On Sun, May 31, 2020 at 08:24:52PM +0200, Giovanni Gherdovich wrote:
> There may be CPUs that support turbo boost but don't declare any turbo
> ratio, i.e. their MSR_TURBO_RATIO_LIMIT is all zeroes. In that condition
> scale-invariant calculations can't be performed.
>
> Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
> Suggested-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
FWIW,
Tested-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
next prev parent reply other threads:[~2020-06-01 23:34 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-31 18:24 [PATCH v2 0/3] More frequency invariance fixes for x86 Giovanni Gherdovich
2020-05-31 18:24 ` [PATCH v2 1/3] x86, sched: check for counters overflow in frequency invariant accounting Giovanni Gherdovich
2020-06-03 14:22 ` Rafael J. Wysocki
2020-06-16 12:21 ` [tip: sched/core] " tip-bot2 for Giovanni Gherdovich
2020-10-22 8:46 ` [PATCH v2 1/3] " Peter Zijlstra
2020-10-22 12:21 ` Giovanni Gherdovich
2020-10-22 12:30 ` Peter Zijlstra
2020-05-31 18:24 ` [PATCH v2 2/3] x86, sched: Bail out of frequency invariance if turbo frequency is unknown Giovanni Gherdovich
2020-06-01 23:34 ` Ricardo Neri [this message]
2020-07-06 20:19 ` Ira Weiny
2020-06-03 14:23 ` Rafael J. Wysocki
2020-06-16 12:21 ` [tip: sched/core] " tip-bot2 for Giovanni Gherdovich
2020-05-31 18:24 ` [PATCH v2 3/3] x86, sched: Bail out of frequency invariance if turbo_freq/base_freq gives 0 Giovanni Gherdovich
2020-06-03 14:51 ` Rafael J. Wysocki
2020-06-16 12:21 ` [tip: sched/core] " tip-bot2 for Giovanni Gherdovich
2020-06-03 12:31 ` [PATCH v2 0/3] More frequency invariance fixes for x86 Peter Zijlstra
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