Merging commit 5c816728651ae425954542fed64d21 into mtk-v5.15-dev, and
the results remain the same:
```
root@genio-1200-evk:~# sudo taskset -c 7 perf stat -e
armv8_cortex_a55/cpu_cycles/ -e armv8_cortex_a78/cpu_cycles/ -e cycles sleep 1
Performance counter stats for 'sleep 1':
<not counted> armv8_cortex_a55/cpu_cycles/
(0.00%)
770458 armv8_cortex_a78/cpu_cycles/
<not counted> cycles
(0.00%)
1.001531615 seconds time elapsed
0.001367000 seconds user
0.000000000 seconds sys
```
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https://bugs.launchpad.net/bugs/2060063
Title:
PMU counters for Cortex-A78 not working correctly
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