mirror of https://gitee.com/openkylin/linux.git
ba0f26d852
This is a preparatory patch for the mba feedback loop. Add support to measure the "bandwidth in MBps" and the "delta bandwidth". Measure it by reading the MBM IA32_QM_CTR MSRs and calculating the amount of "bytes" moved. There is no user space interface for this and will only be used by the feedback loop patch. Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: ravi.v.shankar@intel.com Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com Cc: vikas.shivappa@intel.com Cc: ak@linux.intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/1524263781-14267-6-git-send-email-vikas.shivappa@linux.intel.com |
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