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tools/power turbostat: modprobe msr, if needed
Some distros (Ubuntu) ship the msr driver as a module. If turbosat is run as root on those systems, and discovers that there is no /dev/cpu/cpu0/msr, it will now "modprobe msr" for the user. If not root, the modprobe attempt will fail, and turbostat will exit as before: turbostat: no /dev/cpu/0/msr, Try "# modprobe msr" : No such file or directory Signed-off-by: Len Brown <len.brown@intel.com>
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1 changed files with 3 additions and 2 deletions
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@ -1528,7 +1528,8 @@ void check_dev_msr()
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struct stat sb;
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if (stat("/dev/cpu/0/msr", &sb))
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err(-5, "no /dev/cpu/0/msr, Try \"# modprobe msr\" ");
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if (system("/sbin/modprobe msr > /dev/null 2>&1"))
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err(-5, "no /dev/cpu/0/msr, Try \"# modprobe msr\" ");
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}
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void check_permissions()
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@ -2713,7 +2714,7 @@ int get_and_dump_counters(void)
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}
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void print_version() {
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fprintf(stderr, "turbostat version 4.2 23 Mar, 2015"
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fprintf(stderr, "turbostat version 4.3 24 Mar, 2015"
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" - Len Brown <lenb@kernel.org>\n");
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}
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