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authorWyes Karny2023-05-30 13:13:48 +0000
committerRafael J. Wysocki2023-06-16 19:30:47 +0200
commit217e67784eab30cd0704fab4109647ea68a4d850 (patch)
tree2c673698f6a75c745340cf6178c9ddbdd4909e1d /mm/damon
parentb4a11fa3331e163e177e76098fe1d8b12b87cf6b (diff)
cpufreq: amd-pstate: Write CPPC enable bit per-socket
Currently amd_pstate sets CPPC enable bit in MSR_AMD_CPPC_ENABLE only for the CPU where the module_init happened. But MSR_AMD_CPPC_ENABLE is per-socket. This causes CPPC enable bit to set for only one socket for servers with more than one physical packages. To fix this write MSR_AMD_CPPC_ENABLE per-socket. Also, handle duplicate calls for cppc_enable, because it's called from per-policy/per-core callbacks and can result in duplicate MSR writes. Before the fix: amd@amd:~$ sudo rdmsr -a 0xc00102b1 | uniq --count 192 0 192 1 After the fix: amd@amd:~$ sudo rdmsr -a 0xc00102b1 | uniq --count 384 1 Suggested-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Signed-off-by: Wyes Karny <wyes.karny@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'mm/damon')
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