Public bug reported:
Newer kernels are more paranoid about security so the perf stats are
zero unless one runs with the CAP_SYS_ADMIN capability (or tweak
/proc/sys/kernel/perf_event_paranoid to below 2 for it to work as a
normal user).
Ensure perf stats are only shown if we can actually read them.
** Affects: power-calibrate (Ubuntu)
Importance: Low
Assignee: Colin Ian King (colin-king)
Status: In Progress
** Changed in: power-calibrate (Ubuntu)
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: power-calibrate (Ubuntu)
Importance: Undecided => Low
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https://bugs.launchpad.net/bugs/1627516
Title:
detect when perf counters can't be used
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