From: Viresh Kumar <viresh.kumar@linaro.org>
To: Rafael Wysocki <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>,
linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
Juri Lelli <Juri.Lelli@arm.com>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
patrick.bellasi@arm.com, john.ettedgui@gmail.com,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Joel Fernandes <joelaf@google.com>,
Morten Rasmussen <morten.rasmussen@arm.com>
Subject: [PATCH 0/3] cpufreq: schedutil: Fix 4.12 regressions
Date: Fri, 9 Jun 2017 15:45:53 +0530 [thread overview]
Message-ID: <cover.1497002895.git.viresh.kumar@linaro.org> (raw)
Hi Rafael,
I have identified some regressions with the schedutil governor which
happen due to one of your patches that got merged in 4.12-rc1.
This series fixes all the drivers which provide a ->target_index()
callback but doesn't fix the drivers which provide ->target() callback.
Such platforms need to implement the ->resolve_freq() callback in order
to get this fixed and I only had hardware for testing intel_pstate,
which I fixed in this series.
I am wondering if there is another way to fix this issue (than what I
tried) or if we should revert the offending commit (39b64aa1c007) and
look for other solutions.
Anyway, this series has the necessary patches to fix it.
Viresh Kumar (3):
cpufreq: schedutil: Restore cached_raw_freq behavior
cpufreq: schedutil: Fix selection algorithm while reducing frequency
cpufreq: intel_pstate: Provide resolve_freq() to fix regression
drivers/cpufreq/intel_pstate.c | 14 +++++++++++++
kernel/sched/cpufreq_schedutil.c | 45 +++++++++++++++++++++++++++++++++-------
2 files changed, 52 insertions(+), 7 deletions(-)
--
2.13.0.70.g6367777092d9
next reply other threads:[~2017-06-09 10:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-09 10:15 Viresh Kumar [this message]
2017-06-09 10:15 ` [PATCH 1/3] cpufreq: schedutil: Restore cached_raw_freq behavior Viresh Kumar
2017-06-09 10:15 ` [PATCH 2/3] cpufreq: schedutil: Fix selection algorithm while reducing frequency Viresh Kumar
2017-06-10 9:11 ` Joel Fernandes
2017-06-11 6:21 ` Joel Fernandes
2017-06-12 3:44 ` Viresh Kumar
2017-06-12 12:33 ` Rafael J. Wysocki
2017-06-09 10:15 ` [PATCH 3/3] cpufreq: intel_pstate: Provide resolve_freq() to fix regression Viresh Kumar
2017-06-10 9:26 ` Joel Fernandes
2017-06-12 3:41 ` Viresh Kumar
2017-06-09 12:24 ` [PATCH 0/3] cpufreq: schedutil: Fix 4.12 regressions Rafael J. Wysocki
2017-06-09 12:32 ` Viresh Kumar
2017-06-09 13:25 ` Rafael J. Wysocki
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