I have an aside question, do you have any idea? Thanks a lot!
For DDR PMU, I want to add bandwidth usage metric, but it depends on DDR
controller clock frequency.
For example, we have i.MX8MM LPDDR4 board which DDR controller clock is 800MHZ,
and i.MX8MM DDR4 board which DDR controller is 600MHZ, but the SoC is the same.
So they can share all JSON metrics with identifier "i.mx8mm", except bandwidth metric.
what is the bandwidth metric? how is it supposed to be calculated?
If I add separate JOSN metrics files for identifier "i.mx8mm-lpddr4" and
identifier "i.mx8mm-ddr4", then it's going to be very redundant, since
most metrics are same just the identifier is different.
Do you know how perf tool handle such case?
jirka is supporting user-defined metric here:
https://lore.kernel.org/lkml/[email protected]/
So maybe you can use that somehow with separate scripts.
Thanks,
John
