diff options
| author | Giovanni Gherdovich <[email protected]> | 2020-04-16 07:47:43 +0200 |
|---|---|---|
| committer | Peter Zijlstra <[email protected]> | 2020-04-22 23:10:13 +0200 |
| commit | 23ccee22e834eca236b9a20989caf6905bd6954a (patch) | |
| tree | eef4b477b47cbcf926942e4eb7cf74799177edea /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 9a6c2c3c7a73ce315c57c1b002caad6fcc858d0f (diff) | |
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/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions