diff options
| author | Huang Rui <[email protected]> | 2021-04-25 15:34:51 +0800 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2021-05-13 12:10:24 +0200 |
| commit | 3743d55b289c203d8f77b7cd47c24926b9d186ae (patch) | |
| tree | 8a9f28d591c88bc7a014d2464096409237a0867e /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 02dbb7246c5bbbbe1607ebdc546ba5c454a664b1 (diff) | |
x86, sched: Fix the AMD CPPC maximum performance value on certain AMD Ryzen generations
Some AMD Ryzen generations has different calculation method on maximum
performance. 255 is not for all ASICs, some specific generations should use 166
as the maximum performance. Otherwise, it will report incorrect frequency value
like below:
~ → lscpu | grep MHz
CPU MHz: 3400.000
CPU max MHz: 7228.3198
CPU min MHz: 2200.0000
[ mingo: Tidied up whitespace use. ]
[ Alexander Monakov <[email protected]>: fix 225 -> 255 typo. ]
Fixes: 41ea667227ba ("x86, sched: Calculate frequency invariance for AMD systems")
Fixes: 3c55e94c0ade ("cpufreq: ACPI: Extend frequency tables to cover boost frequencies")
Reported-by: Jason Bagavatsingham <[email protected]>
Fixed-by: Alexander Monakov <[email protected]>
Reviewed-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Huang Rui <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Tested-by: Jason Bagavatsingham <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=211791
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions