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Hi Hiroshi, Here goes the extra info that you asked for: $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 300759 $ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 300759 $ echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor powersave $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 23042 $ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 23042 One other strange thing that I've noticed is that I'll never get the same frequency when switching to powersave govenor. It allways gets increased a little bit. For example: $ echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 24453 $ echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 27779 $ echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 29947 $ echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 32400 Thanks for checking this. Jose Goncalves Hiroshi Miura wrote: > Hi, > > I will check code in several days, but I cannot re-produce a problem in a moment > because I am away from home for business trip. > > In my understand, the driver recognize the CPU properly. > > At Fri, 26 Aug 2005 19:01:37 +0100, > Jose Miguel Goncalves wrote: > >>Hi all, >> >>I'm trying to use cpufreq on my Geode GX1 board with linux-2.6.12.5, but, >>while everything seems OK, i.e., I can change from performance to powersave >>governor and back and /proc/cpuinfo reports me frequency changes, I can >>get no effective frequency/CPU power change because I check it with >>the Whetstone benchmark and it allways give me the same value (~100 MWIPS). >>Any ideas from were could be the problem? > > > Can you try to check also follows? > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq > /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq > > With this driver, it will significantly slow down by setting powersave mode. > It seems some bus in the driver. > > Thank you for report. > > Hiroshi > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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