On Sat, Jan 28, 2012 at 6:58 AM, Barry Song <21cnbao@xxxxxxxxx> wrote: > hi guys, > As tegra3 is using vSMP (Variable Symmetric Multiprocessing) arch, > there are 4 high-performance(G) cores and one low-power(LP) core. At > runtime, both cpu dynamic hotplug and dynamic LP/G swith are used in a > real tegra3 product as a DVFS way to save power. kernel log in EeePad: > *cpu dynamic hotplug* > <4>[104626.426957] CPU1: Booted secondary processor > <7>[104627.427412] tegra CPU: force EDP limit 720000 kHz > <4>[104627.427670] CPU2: Booted secondary processor > <4>[104628.537005] stop_machine_cpu_stop cpu=0 > <4>[104628.537017] stop_machine_cpu_stop cpu=2 > <4>[104628.537059] stop_machine_cpu_stop cpu=1 > <4>[104628.537702] __stop_cpus: wait_for_completion_timeout+ > <4>[104628.537810] __stop_cpus: smp=0 done.executed=1 done.ret =0- > <5>[104628.537960] CPU1: clean shutdown > <4>[104630.537092] stop_machine_cpu_stop cpu=0 > <4>[104630.537172] stop_machine_cpu_stop cpu=2 > <4>[104630.537739] __stop_cpus: wait_for_completion_timeout+ > <4>[104630.538060] __stop_cpus: smp=0 done.executed=1 done.ret =0- > <5>[104630.538203] CPU2: clean shutdown > <4>[104631.306984] tegra_watchdog_touch > > *G<->LP switch* > <3>[104666.799152] LP=>G: prolog 22 us, switch 2129 us, epilog 24 us, > total 2175 us > <3>[104667.807273] G=>LP: prolog 18 us, switch 157 us, epilog 25 us, > total 200 us > <4>[104671.407008] tegra_watchdog_touch > <4>[104671.408816] nct1008_get_temp: ret temp=35C > <3>[104671.939060] LP=>G: prolog 17 us, switch 2127 us, epilog 22 us, > total 2166 us > <3>[104672.938091] G=>LP: prolog 18 us, switch 156 us, epilog 24 us, > total 198 us > > Related codes don't exist in both http://nv-tegra.nvidia.com/gitweb > and kernel org, any people know the address to locate these kernel > source codes? You need to contact the manufacturer of the device to get the exact sources (I expect). That being said, from a quick glance I found code that prints out those messages on the freshest branch (named rel-14r7) at nv-tegra.nvidia.com's linux-2.6 repo. -Olof -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
