Messages in this thread | | | From | Viresh Kumar <> | Subject | [RFC V2 0/2] cpufreq: cppc: Add support for frequency invariance | Date | Tue, 15 Dec 2020 16:46:34 +0530 |
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Hello,
CPPC cpufreq driver is used for ARM servers and this patch series tries to provide frequency invariance support for them.
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.
Ionela/Peter Puhov, it would be nice if you guys can give this a shot.
This is based of pm/linux-next and patches [1] and [2] which I sent recently to cleanup arm64 topology stuff.
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
[1] https://lore.kernel.org/lkml/7a171f710cdc0f808a2bfbd7db839c0d265527e7.1607579234.git.viresh.kumar@linaro.org/ [2] https://lore.kernel.org/lkml/5ffc7b9ed03c6301ac2f710f609282959491b526.1608010334.git.viresh.kumar@linaro.org/
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 | 8 +- arch/arm64/kernel/topology.c | 89 +++++++++---------- drivers/base/arch_topology.c | 56 +++++++++++- drivers/cpufreq/cppc_cpufreq.c | 140 +++++++++++++++++++++++++++++- include/linux/arch_topology.h | 14 ++- kernel/sched/core.c | 1 + 6 files changed, 244 insertions(+), 64 deletions(-)
-- 2.25.0.rc1.19.g042ed3e048af
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