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| author | Giovanni Gherdovich <[email protected]> | 2020-04-16 05:47:43 +0000 |
|---|---|---|
| committer | Peter Zijlstra <[email protected]> | 2020-04-22 21:10:13 +0000 |
| commit | 23ccee22e834eca236b9a20989caf6905bd6954a (patch) | |
| tree | eef4b477b47cbcf926942e4eb7cf74799177edea /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | x86, sched: Bail out of frequency invariance if base frequency is unknown (diff) | |
| download | kernel-23ccee22e834eca236b9a20989caf6905bd6954a.tar.gz kernel-23ccee22e834eca236b9a20989caf6905bd6954a.zip | |
x86, sched: Account for CPUs with less than 4 cores in freq. invariance
If a CPU has less than 4 physical cores, MSR_TURBO_RATIO_LIMIT will
rightfully report that the 4C turbo ratio is zero. In such cases, use the
1C turbo ratio instead for frequency invariance calculations.
Fixes: 1567c3e3467c ("x86, sched: Add support for frequency invariance")
Reported-by: Like Xu <[email protected]>
Reported-by: Neil Rickert <[email protected]>
Signed-off-by: Giovanni Gherdovich <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Tested-by: Dave Kleikamp <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions