tools/power turbostat: bugfix: GFXMHz column not changing
turbostat displays a GFXMHz column, which comes from reading /sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz But GFXMHz was not changing, even when a manual cat /sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz showed a new value. It turns out that a rewind() on the open file is not sufficient, fflush() (or a close/open) is needed to read fresh values. Reported-by: NYaroslav Isakov <yaroslav.isakov@gmail.com> Signed-off-by: NLen Brown <len.brown@intel.com>
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