v6.11rc2:
$ sudo taskset -c 7 ./perf stat -e cycles sleep 5
Performance counter stats for 'sleep 5':
<not counted> armv8_cortex_a55/cycles/
(0.00%)
1763635 armv8_cortex_a78/cycles/
5.002565848 seconds time elapsed
0.000000000 seconds user
0.002339000 seconds sys
$ sudo taskset -c 7 ./perf stat -e cycles sleep 5
Performance counter stats for 'sleep 5':
<not counted> armv8_cortex_a55/cycles/
(0.00%)
1346978 armv8_cortex_a78/cycles/
5.000846912 seconds time elapsed
0.000000000 seconds user
0.003019000 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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