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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Linux PM <linux-pm@vger.kernel.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Doug Smythies <dsmythies@telus.net>
Subject: [PATCH 0/2] cpufreq: intel_pstate: Eliminate the PID controller
Date: Tue, 25 Jul 2017 00:10:04 +0200	[thread overview]
Message-ID: <6183701.sLtcQDF8CA@aspire.rjw.lan> (raw)

Hi,

According to testing so far, the P-state selection based on the PID controller
in intel_pstate can be replaced with the P-state selection based on CPU load
with no considerable regressions *and* the PID-based P-state selection is
generally flaky and hard to manage, make intel_pstate use the P-state selection
based on CPU load for all categories of systems and eliminate the PID controller
along with all things related to it from the driver.

[1/2] is the actual elimination.
[2/2] is a simplification possible after [1/2].

Thanks,
Rafael

             reply	other threads:[~2017-07-24 22:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-24 22:10 Rafael J. Wysocki [this message]
2017-07-24 22:10 ` [PATCH 1/2] cpufreq: intel_pstate: Do not use PID-based P-state selection Rafael J. Wysocki
2017-07-24 22:12 ` [PATCH 2/2] cpufreq: intel_pstate: Drop ->update_util from pstate_funcs Rafael J. Wysocki

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