https://github.com/torvalds/linux
Revision 3743d55b289c203d8f77b7cd47c24926b9d186ae authored by Huang Rui on 25 April 2021, 07:34:51 UTC, committed by Ingo Molnar on 13 May 2021, 10:10:24 UTC
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 <amonakov@ispras.ru>: 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 <jason.bagavatsingham@gmail.com> Fixed-by: Alexander Monakov <amonakov@ispras.ru> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Jason Bagavatsingham <jason.bagavatsingham@gmail.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20210425073451.2557394-1-ray.huang@amd.com Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=211791 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Tip revision: 3743d55b289c203d8f77b7cd47c24926b9d186ae authored by Huang Rui on 25 April 2021, 07:34:51 UTC
x86, sched: Fix the AMD CPPC maximum performance value on certain AMD Ryzen generations
x86, sched: Fix the AMD CPPC maximum performance value on certain AMD Ryzen generations
Tip revision: 3743d55
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lib | ||
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net | ||
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.cocciconfig | -rw-r--r-- | 59 bytes |
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.gitignore | -rw-r--r-- | 1.9 KB |
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COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 98.6 KB |
Kbuild | -rw-r--r-- | 1.3 KB |
Kconfig | -rw-r--r-- | 555 bytes |
MAINTAINERS | -rw-r--r-- | 587.9 KB |
Makefile | -rw-r--r-- | 64.2 KB |
README | -rw-r--r-- | 727 bytes |
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