Howto get cache misses count on IMX6SX?

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Howto get cache misses count on IMX6SX?

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mabar52
Contributor III
DCP2-98:/mnt/mmc# perf stat -e L1-dcache-load-misses,L1-dcache-store-misses,L1-icache-load-misses,cycles,cache-misses sleep 5

Performance counter stats for 'sleep 5':

0 L1-dcache-load-misses
0 L1-dcache-store-misses
0 L1-icache-load-misses
4145419 cycles
0 cache-misses

5.007459334 seconds time elapsed

0.008648000 seconds user
0.000000000 seconds sys

 I seem to get zeroes for all cache miss counters through perf.
What could be missing?

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