From: Viresh Kumar <viresh.kumar@linaro.org> To: Ionela Voinescu <ionela.voinescu@arm.com>, Rafael Wysocki <rjw@rjwysocki.net>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org> Cc: Viresh Kumar <viresh.kumar@linaro.org>, Vincent Guittot <vincent.guittot@linaro.org>, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Sudeep Holla <sudeep.holla@arm.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org> Subject: [PATCH V3 0/2] cpufreq: cppc: Add support for frequency invariance Date: Thu, 28 Jan 2021 16:18:54 +0530 [thread overview] Message-ID: <cover.1611829953.git.viresh.kumar@linaro.org> (raw) Hello, CPPC cpufreq driver is used for ARM servers and this patch series tries to provide counter-based frequency invariance support for them in the absence for architecture specific counters (like AMUs). This is tested with some hacks, as I didn't have access to the right hardware, on the ARM64 hikey board to check the overall functionality and that works fine. Vincent/Ionela, it would be nice if you guys can give this a shot on some real hardware where counters work. This is based of pm/linux-next (need some stuff from the arm64 tree). These patches should get merged via the arm64 tree only for the same reason. Changes since V2: - Not sending as an RFC anymore. - Several renames, reordering of code in 1/2 based on Ionela's comments. - Several rebase changes for 2/2. - The freq_scale calculations are optimized a bit. - Better overall commenting and commit logs. Changes since V1: - The interface for setting the callbacks is improved, so different parts looking to provide their callbacks don't need to think about each other. - Moved to per-cpu storage for storing the callback related data, AMU counters have higher priority with this. -- viresh Viresh Kumar (2): topology: Allow multiple entities to provide sched_freq_tick() callback cpufreq: cppc: Add support for frequency invariance arch/arm64/include/asm/topology.h | 10 +- arch/arm64/kernel/topology.c | 89 +++++++-------- drivers/base/arch_topology.c | 56 +++++++++- drivers/cpufreq/cppc_cpufreq.c | 179 ++++++++++++++++++++++++++++-- include/linux/arch_topology.h | 15 ++- kernel/sched/core.c | 1 + 6 files changed, 274 insertions(+), 76 deletions(-) -- 2.25.0.rc1.19.g042ed3e048af
WARNING: multiple messages have this Message-ID (diff)
From: Viresh Kumar <viresh.kumar@linaro.org> To: Ionela Voinescu <ionela.voinescu@arm.com>, Rafael Wysocki <rjw@rjwysocki.net>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org> Cc: Vincent Guittot <vincent.guittot@linaro.org>, linux-pm@vger.kernel.org, Viresh Kumar <viresh.kumar@linaro.org>, linux-kernel@vger.kernel.org, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Sudeep Holla <sudeep.holla@arm.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH V3 0/2] cpufreq: cppc: Add support for frequency invariance Date: Thu, 28 Jan 2021 16:18:54 +0530 [thread overview] Message-ID: <cover.1611829953.git.viresh.kumar@linaro.org> (raw) Hello, CPPC cpufreq driver is used for ARM servers and this patch series tries to provide counter-based frequency invariance support for them in the absence for architecture specific counters (like AMUs). This is tested with some hacks, as I didn't have access to the right hardware, on the ARM64 hikey board to check the overall functionality and that works fine. Vincent/Ionela, it would be nice if you guys can give this a shot on some real hardware where counters work. This is based of pm/linux-next (need some stuff from the arm64 tree). These patches should get merged via the arm64 tree only for the same reason. Changes since V2: - Not sending as an RFC anymore. - Several renames, reordering of code in 1/2 based on Ionela's comments. - Several rebase changes for 2/2. - The freq_scale calculations are optimized a bit. - Better overall commenting and commit logs. Changes since V1: - The interface for setting the callbacks is improved, so different parts looking to provide their callbacks don't need to think about each other. - Moved to per-cpu storage for storing the callback related data, AMU counters have higher priority with this. -- viresh Viresh Kumar (2): topology: Allow multiple entities to provide sched_freq_tick() callback cpufreq: cppc: Add support for frequency invariance arch/arm64/include/asm/topology.h | 10 +- arch/arm64/kernel/topology.c | 89 +++++++-------- drivers/base/arch_topology.c | 56 +++++++++- drivers/cpufreq/cppc_cpufreq.c | 179 ++++++++++++++++++++++++++++-- include/linux/arch_topology.h | 15 ++- kernel/sched/core.c | 1 + 6 files changed, 274 insertions(+), 76 deletions(-) -- 2.25.0.rc1.19.g042ed3e048af _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-01-28 10:49 UTC|newest] Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-28 10:48 Viresh Kumar [this message] 2021-01-28 10:48 ` [PATCH V3 0/2] cpufreq: cppc: Add support for frequency invariance Viresh Kumar 2021-01-28 10:48 ` [PATCH V3 1/2] topology: Allow multiple entities to provide sched_freq_tick() callback Viresh Kumar 2021-01-28 10:48 ` Viresh Kumar 2021-02-03 11:45 ` Ionela Voinescu 2021-02-03 11:45 ` Ionela Voinescu 2021-02-05 9:14 ` Viresh Kumar 2021-02-05 9:14 ` Viresh Kumar 2021-02-17 0:24 ` Ionela Voinescu 2021-02-17 0:24 ` Ionela Voinescu 2021-02-17 4:25 ` Viresh Kumar 2021-02-17 4:25 ` Viresh Kumar 2021-02-17 11:30 ` Ionela Voinescu 2021-02-17 11:30 ` Ionela Voinescu 2021-02-17 11:40 ` Viresh Kumar 2021-02-17 11:40 ` Viresh Kumar 2021-02-17 11:57 ` Ionela Voinescu 2021-02-17 11:57 ` Ionela Voinescu 2021-02-18 7:23 ` Viresh Kumar 2021-02-18 7:23 ` Viresh Kumar 2021-02-18 9:33 ` Viresh Kumar 2021-02-18 9:33 ` Viresh Kumar 2021-02-18 16:36 ` Ionela Voinescu 2021-02-18 16:36 ` Ionela Voinescu 2021-02-19 4:58 ` Viresh Kumar 2021-02-19 4:58 ` Viresh Kumar 2021-02-19 9:44 ` Ionela Voinescu 2021-02-19 9:44 ` Ionela Voinescu 2021-02-19 9:48 ` Viresh Kumar 2021-02-19 9:48 ` Viresh Kumar 2021-01-28 10:48 ` [PATCH V3 2/2] cpufreq: cppc: Add support for frequency invariance Viresh Kumar 2021-01-28 10:48 ` Viresh Kumar 2021-02-18 16:35 ` Ionela Voinescu 2021-02-18 16:35 ` Ionela Voinescu 2021-02-22 11:00 ` Ionela Voinescu 2021-02-22 11:00 ` Ionela Voinescu 2021-02-22 11:04 ` Viresh Kumar 2021-02-22 11:04 ` Viresh Kumar
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