I sent an old/broken patch (4/4). This one is better: cpufreq-aperf: mperf might tick faster than expected, esp on Intel fixes lines like that: CPU Average freq(KHz) Time in C0 Time in Cx C0 percentage 000 2601300 05 sec 004 ms 8155059272 sec 192 ms 100 Signed-off-by: Thomas Renninger <trenn@xxxxxxx> CC: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx> CC: cpufreq@xxxxxxxxxxxxxxx --- utils/cpufreq-aperf.c | 5 ++- 6 files changed, 293 insertions(+), 211 deletions(-) --- a/utils/cpufreq-aperf.c +++ b/utils/cpufreq-aperf.c @@ -153,7 +153,10 @@ static int get_C_state_time(struct timeval time_diff, uint64_t mperf_diff, expected_ticks = max_freq * overall_msecs; *percent = (mperf_diff * 100) / expected_ticks; - cx_time = (expected_ticks - mperf_diff) / max_freq; + if (mperf_diff > expected_ticks) + cx_time = 0; + else + cx_time = (expected_ticks - mperf_diff) / max_freq; c0_time = mperf_diff / max_freq; CX_time->tv_sec = cx_time / 1000; -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
