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authorLen Brown <len.brown@intel.com>2021-01-30 23:43:10 -0500
committerLen Brown <len.brown@intel.com>2021-05-04 18:23:14 -0400
commit2af4f9b8596afbbd7667a18fa71d117bac227dea (patch)
tree58f114fb5263ed38fd797f9c2e6791a2fa770cc6 /COPYING
parent9f4ad9e425a1d3b6a34617b8ea226d56a119a717 (diff)
downloadlinux-2af4f9b8596afbbd7667a18fa71d117bac227dea.tar.gz
tools/power turbostat: add built-in-counter for IPC -- Instructions per Cycle
Use linux-perf to access the hardware instructions-retired counter. This is necessary because the counter is not enabled by default, and also the counter is prone to roll-over -- both of which perf manages. It is not necessary to use perf for the cycle counter, because turbostat already needs to collect delta-aperf to calcuate frequency. Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'COPYING')
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