Hi all, Apologies for the long delay in posting v2. v1->v2: - v1 can be found at [1] - Changed debug prints to the format used on the DT path - s/init_cpu_capacity_cppc/topology_init_cpu_capacity_cppc Patches are based on v5.14-rc7. The patches have been build tested on x86 and more thoroughly tested on Juno R2 (arm64), which uses the new functionality, with the following results: root@buildroot:~# dmesg | grep cpu_capacity [ 2.191152] cpu_capacity: CPU0 cpu_capacity=38300 (raw). [ 2.196482] cpu_capacity: CPU1 cpu_capacity=38300 (raw). [ 2.201809] cpu_capacity: CPU2 cpu_capacity=38300 (raw). [ 2.207136] cpu_capacity: CPU3 cpu_capacity=38300 (raw). [ 2.212463] cpu_capacity: CPU4 cpu_capacity=102400 (raw). [ 2.217877] cpu_capacity: CPU5 cpu_capacity=102400 (raw). [ 2.223291] cpu_capacity: capacity_scale=102400 [ 2.227834] cpu_capacity: CPU0 cpu_capacity=383 [ 2.232376] cpu_capacity: CPU1 cpu_capacity=383 [ 2.236919] cpu_capacity: CPU2 cpu_capacity=383 [ 2.241462] cpu_capacity: CPU3 cpu_capacity=383 [ 2.246004] cpu_capacity: CPU4 cpu_capacity=1024 [ 2.250634] cpu_capacity: CPU5 cpu_capacity=1024 [ 2.255321] cpu_capacity: cpu_capacity initialization done root@buildroot:~# tail -n +1 /sys/devices/system/cpu/cpu*/cpu_capacity ==> /sys/devices/system/cpu/cpu0/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu1/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu2/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu3/cpu_capacity <== 383 ==> /sys/devices/system/cpu/cpu4/cpu_capacity <== 1024 ==> /sys/devices/system/cpu/cpu5/cpu_capacity <== 1024 [1] https://lore.kernel.org/lkml/20210514095339.12979-1-ionela.voinescu@xxxxxxx/ Thanks, Ionela. Ionela Voinescu (3): x86, ACPI: rename init_freq_invariance_cppc to arch_init_invariance_cppc arch_topology: obtain cpu capacity using information from CPPC arm64, topology: enable use of init_cpu_capacity_cppc() arch/arm64/include/asm/topology.h | 4 ++++ arch/x86/include/asm/topology.h | 2 +- drivers/acpi/cppc_acpi.c | 6 ++--- drivers/base/arch_topology.c | 37 +++++++++++++++++++++++++++++++ include/linux/arch_topology.h | 4 ++++ 5 files changed, 49 insertions(+), 4 deletions(-) -- 2.29.2.dirty
