• Justin Ernst's avatar
    tools/power/turbostat: Fix uncore frequency file string · 60add818
    Justin Ernst authored
    Running turbostat on a 16 socket HPE Scale-up Compute 3200 (SapphireRapids) fails with:
    turbostat: /sys/devices/system/cpu/intel_uncore_frequency/package_010_die_00/current_freq_khz: open failed: No such file or directory
    
    We observe the sysfs uncore frequency directories named:
    ...
    package_09_die_00/
    package_10_die_00/
    package_11_die_00/
    ...
    package_15_die_00/
    
    The culprit is an incorrect sprintf format string "package_0%d_die_0%d" used
    with each instance of reading uncore frequency files. uncore-frequency-common.c
    creates the sysfs directory with the format "package_%02d_die_%02d". Once the
    package value reaches double digits, the formats diverge.
    
    Change each instance of "package_0%d_die_0%d" to "package_%02d_die_%02d".
    
    [lenb: deleted the probe part of this patch, as it was already fixed]
    Signed-off-by: default avatarJustin Ernst <justin.ernst@hpe.com>
    Reviewed-by: default avatarThomas Renninger <trenn@suse.de>
    Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    60add818
turbostat.c 207 KB