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| author | Srinivas Pandruvada <[email protected]> | 2015-10-15 12:34:21 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2015-10-15 22:46:33 +0200 |
| commit | 8e601a9f97a00bab031980de34f9a81891c1f82f (patch) | |
| tree | 9116b294513ac173b61dffe4c8daa05802072d68 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 25cb62b76430a91cc6195f902e61c2cb84ade622 (diff) | |
cpufreq: intel_pstate: Fix divide by zero on Knights Landing (KNL)
This is a workaround for KNL platform, where in some cases MPERF counter
will not have updated value before next read of MSR_IA32_MPERF. In this
case divide by zero will occur. This change ignores current sample for
busy calculation in this case.
Fixes: b34ef932d79a (intel_pstate: Knights Landing support)
Signed-off-by: Srinivas Pandruvada <[email protected]>
Acked-by: Kristen Carlson Accardi <[email protected]>
Cc: 4.1+ <[email protected]> # 4.1+
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions