+ Niklas On Wed, Jun 12, 2019 at 03:20:51PM +0100, Biju Das wrote: > This series aims to enhance thermal support by adding cpu-map, > capacity-dmips-mhz,thermal zone to support IPA and also adding > dynamic power coefficients. > > For CPU capacity-dmips-mhz calculation > ------------------------------------- > dhrystone cross complied using the command [1]. > [1] $CC -O3 -DTIME -fno-inline -fno-builtin-printf -Wno-implicit -march=armv8-a dhry_1.c dhry_2.c -o exe-dry > > dhrystone is executed(with a loop value of 80000000) and took the average value for 5 iterations > of CA57 and CA53. > > IPA testing > ---------- > > 1)Enable THERMAL_WRITABLE_TRIPS and THERMAL_STATISTICS in kernel > > 2) Check the current temperature(36.5 C) and check the cooling stats on device0 and device 1 > > Execute the below applications on an ssh session > > 3) while true; do touch pic-`date +%s`.jpg;done & will give almost 0.5 C jump on each instance > > 4) Executing dhrystone will give 3-4 C jump(runs through the benchmark: 800000000) > > 5) Now the current temperature is around 46.0 C and there is no change in cooling stats on device0 and device 1 > > 6) Now change the passive trip temperature to 42 C, At this time CPUFreq started kicking in trying to limit the temperature, which you can see through the cooling stats on device0 and device1. You can see the system trying to maintain the temperature around 42 C. > > 7) Without changing the load, Now change the passive trip temperature to 100 C, the temperature rises back to 46 C again. ... Thanks, This looks fine to me but I will wait to see if there are other reviews before applying. Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
