mbox series

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

Message ID 20231127160838.1403404-1-beata.michalska@arm.com (mailing list archive)
Headers show
Series Add support for AArch64 AMUv1-based arch_freq_get_on_cpu | expand

Message

Beata Michalska Nov. 27, 2023, 4:08 p.m. UTC 
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(-)