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The LBR capabilities of Architecture LBR are retrieved from the CPUID enumeration once at boot time. The capabilities have to be saved for future usage. Several new fields are added into structure x86_pmu to indicate the capabilities. The fields will be used in the following patches. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/1593780569-62993-9-git-send-email-kan.liang@linux.intel.com |
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