Hi, A bit of fun is working is slowly working its way to the tree. After a couple teaks and a little c-state patch from Kevin Hilman it looks like powertop will be able to live on ARM/OMAP3. Our first pass of internal code has come together enough to have cpuidle + cpufreq running ++. Hopefully, after some time and more work that reference can be leveraged to see the same on kernel.org. Lots of work to do on that path... If the png picture makes it, it can be seen given the load which was running, all C-States have been touched and most P-States! The P-State picture only has ARM displayed, might be nice to see if Intel is open to listing speed for the other asymmetric processors and the IO domain. Given the background load residency isn't so great, but OFF mode is being touched. In the current definition: C0 - wfi C1 - wfi + dtick C2 - mpu-retention, core-active C3 - mpu-off, core-active C4 - mpu-ret, core-ret C5 - mpu-off, core-ret C6 - mpu-off, core-off (0-volts) Thanks to Adam Belay for cpuidle work! Regards, Richard W. root@xxxxxxxxxxxxx:/tst# ./powertop-static -d -t 60 PowerTOP 1.9 (C) 2007 Intel Corporation Collecting data for 60 seconds Cn Avg residency C0 (cpu running) ( 7.9%) C1 934.7ms (89.0%) C2 44.4ms ( 2.7%) C3 0.0ms ( 0.0%) C4 5.5ms ( 0.3%) C5 3.5ms ( 0.2%) C6 0.4ms ( 0.0%) P-states (frequencies) 550 Mhz 8.0% 500 Mhz 0.0% 250 Mhz 0.0% 125 Mhz 92.0% Wakeups-from-idle per second : 2.9 interval: 60.0s Top causes for wakeups: 56.8% ( 12.4) <interrupt> : 32KHz timer 11.4% ( 2.5) <interrupt> : prcm 10.4% ( 2.3) <interrupt> : eth0 7.3% ( 1.6) bash : queue_delayed_work_on (delayed_work_timer_fn ) 4.6% ( 1.0) <kernel core> : __netdev_watchdog_up (dev_watchdog) 2.3% ( 0.5) <kernel core> : queue_delayed_work_on (delayed_work_timer_fn ) 1.5% ( 0.3) <kernel core> : irlmp_start_discovery_timer (irlmp_discovery _timer_expired) 1.5% ( 0.3) mvltd : schedule_timeout (process_timeout) 1.1% ( 0.2) <kernel core> : neigh_table_init_no_netlink (neigh_periodic_ timer) 0.9% ( 0.2) <kernel core> : page_writeback_init (wb_timer_fn) 0.9% ( 0.2) init : schedule_timeout (process_timeout) 0.2% ( 0.1) <kernel core> : sk_reset_timer (tcp_delack_timer) 0.2% ( 0.1) in.telnetd : sk_reset_timer (tcp_write_timerS 0.2% ( 0.1) <kernel core> : neigh_update (neigh_timer_handler) 0.2% ( 0.0) <interrupt> : serial 0.2% ( 0.0) <kernel core> : cache_register (delayed_work_timer_fn) 0.1% ( 0.0) <kernel core> : ip_rt_init (rt_check_expire) 0.1% ( 0.0) powertop-static : schedule_timeout (process_timeout)
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