On 6 February 2012 09:03, Greg KH <greg@xxxxxxxxx> wrote: > On Mon, Feb 06, 2012 at 05:56:58PM +0100, Pavel Machek wrote: >> Hi! >> >> > Add a sysfs node code to report effective cooling of all cooling devices >> > attached to each trip points of a thermal zone. The cooling data reported >> > will be absolute if the higher temperature trip points are arranged first >> > otherwise the cooling stats is the cumulative effect of the earlier >> > invoked cooling handlers. >> > >> > The basic assumption is that cooling devices will bring down the temperature >> > in a symmetric manner and those statistics can be stored back and used for >> > further tuning of the system. >> >> /sys fs should be one-value-per-file, talk to gregkh. > > That's correct. > > Why not use debugfs for this instead? > > thanks, > > greg k-h Thanks Greg/Pavel for looking into the patch. Basically I checked the places where single sysfs entry is showing more then 1 output. And 1) /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state 2) /sys/devices/system/cpu/cpu0/cpufreq/stats/trans_table are the places where the output is more than 1 value. Anyway I can enclose this sysfs inside CONFIG_THERMAL_COOLING_STATS macro. Thanks, Amit Daniel _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/linux-pm
