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The support of Intel Speed Select Technology - Turbo Frequency (SST-TF) feature enables the ability to set different “All core turbo ratio limits” to cores based on the priority. By using this feature, some cores can be configured to get higher turbo frequency by designating them as high priority at the cost of lower or no turbo frequency on the low priority cores. One new IOCTLs are added: ISST_IF_GET_TURBO_FREQ_INFO : Get information about turbo frequency buckets Once an instance is identified, read or write from correct MMIO offset for a given field as defined in the specification. For details on SST-TF operations using intel-speed-selet utility, refer to: Documentation/admin-guide/pm/intel-speed-select.rst under the kernel documentation Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Pragya Tanwar <pragya.tanwar@intel.com> Link: https://lore.kernel.org/r/20230308070642.1727167-8-srinivas.pandruvada@linux.intel.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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