[PATCH v2 0/2] Add support for AArch64 AMUv1-based arch_freq_get_on_cpu

Beata Michalska
2023-11-27T16:08:59Z

Introducing AArch64 specific version of arch_freq_get_on_cpu, cashing on
existing implementation for FIE and AMUv1 support.
Additionally wiring it up with cpufreq_verify_current_freq to hopefully
eliminate issues when cpufreq_driver->get() returns frequency that is not
entirely aligned.

The changes have been rather lightly (due to some limitations) tested on
an FVP model.

v2:
- Splitting the patches
- Adding comment for full dyntick mode
- Plugging arch_freq_get_on_cpu into cpufreq_verify_current_freq instead
of in show_cpuinfo_cur_freq to allow the framework to stay more in sync
with potential freq changes

[1]
https://lore.kernel.org/lkml/20230606155754.245998-1-beata.michalska@arm.com/

Beata Michalska (1):
arm64: Provide an AMU-based version of arch_freq_get_on_cpu

Sumit Gupta (1):
cpufreq: Wire-up arch-flavored freq info into
cpufreq_verify_current_freq

arch/arm64/kernel/topology.c | 39 ++++++++++++++++++++++++++++++++++++
drivers/cpufreq/cpufreq.c | 3 ++-
2 files changed, 41 insertions(+), 1 deletion(-)

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2.25.1