I'm trying to read saved_tgids using adb: cat sys/kernel/debug/tracing/saved_tgids in samsung A5 with Android 8,but i get "permission denied". Instead if i try to execute the command using adb: cat sys/kernel/debug/tracing/saved_tgids in Pixel 3a XL with Android 8, it shows something. Why? The permission to access to file is the same: -r--r--r-- 1 root root 0 1970-01-01 01:00 saved_tgids
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