Hi, (long e-mail, sorry ;-)) Last known good: 3.8.0 Short description: 1. On -rc3, after s2ram cpufreq does not set CPU on max frequency on high load (on battery). 2. On -rc4 (this is not real regression because I change config between -rc3 and rc4), "ondemand" does not work. Current frequency is 'strange' (792 MHz). Detailed description: 1. Kernel 3.8.0: I try: # cd /sys/devices/system/cpu # CPU_LIST="cpu0/cpufreq/ cpu1/cpufreq/ cpu2/cpufreq cpu3/cpufreq" # for i in $CPU_LIST; do echo -e "\n\n==================\n$i"; grep '' -R $i/*; done Output (show only fisrt CPU, others are same): cpu0/cpufreq/ cpu0/cpufreq//affected_cpus:0 cpu0/cpufreq//bios_limit:2200000 cpu0/cpufreq//cpuinfo_cur_freq:800000 cpu0/cpufreq//cpuinfo_max_freq:2200000 cpu0/cpufreq//cpuinfo_min_freq:800000 cpu0/cpufreq//cpuinfo_transition_latency:10000 cpu0/cpufreq//related_cpus:0 1 2 3 cpu0/cpufreq//scaling_available_frequencies:2200000 2000000 1900000 1800000 1700000 1600000 1500000 1400000 1300000 1200000 1100000 1000000 900000 800000 cpu0/cpufreq//scaling_available_governors:ondemand performance cpu0/cpufreq//scaling_cur_freq:800000 cpu0/cpufreq//scaling_driver:acpi-cpufreq cpu0/cpufreq//scaling_governor:ondemand cpu0/cpufreq//scaling_max_freq:2200000 cpu0/cpufreq//scaling_min_freq:800000 cpu0/cpufreq//scaling_setspeed:<unsupported> It is good: governor "on demand", frequencies also good (800MHz) CASE 1 Run in other consoles "while true; do echo -n; done" (four times), power on/off AC power, suspend to ram: cpu0/cpufreq/ cpu0/cpufreq//affected_cpus:0 cpu0/cpufreq//bios_limit:2200000 cpu0/cpufreq//cpuinfo_cur_freq:2200000 cpu0/cpufreq//cpuinfo_max_freq:2200000 cpu0/cpufreq//cpuinfo_min_freq:800000 cpu0/cpufreq//cpuinfo_transition_latency:10000 cpu0/cpufreq//related_cpus:0 1 2 3 cpu0/cpufreq//scaling_available_frequencies:2200000 2000000 1900000 1800000 1700000 1600000 1500000 1400000 1300000 1200000 1100000 1000000 900000 800000 cpu0/cpufreq//scaling_available_governors:ondemand performance cpu0/cpufreq//scaling_cur_freq:2200000 cpu0/cpufreq//scaling_driver:acpi-cpufreq cpu0/cpufreq//scaling_governor:ondemand cpu0/cpufreq//scaling_max_freq:2200000 cpu0/cpufreq//scaling_min_freq:800000 cpu0/cpufreq//scaling_setspeed:<unsupported> Still is good, governor works as expected. =============================================================================== Kernel 3.9.0-rc1 $ diff -uNr /boot/config-3.8.0 /boot/config-3.9.0-rc3 | grep -i CONFIG_X86_ CONFIG_X86_64=y CONFIG_X86_MPPARSE=y # CONFIG_X86_EXTENDED_PLATFORM is not set +# CONFIG_X86_INTEL_LPSS is not set CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y CONFIG_X86_MSR=m CONFIG_X86_CPUID=m CONFIG_X86_PM_TIMER=y +# CONFIG_X86_INTEL_PSTATE is not set # CONFIG_X86_PCC_CPUFREQ is not set CONFIG_X86_ACPI_CPUFREQ=m # CONFIG_X86_ACPI_CPUFREQ_CPB is not set CONFIG_X86_PLATFORM_DEVICES=y CASE 2 After boot: cpu0/cpufreq/ cpu0/cpufreq//affected_cpus:0 1 2 3 cpu0/cpufreq//bios_limit:2200000 cpu0/cpufreq//cpuinfo_cur_freq:800000 cpu0/cpufreq//cpuinfo_max_freq:2200000 cpu0/cpufreq//cpuinfo_min_freq:800000 cpu0/cpufreq//cpuinfo_transition_latency:10000 cpu0/cpufreq//related_cpus:0 1 2 3 cpu0/cpufreq//scaling_available_frequencies:2200000 2000000 1900000 1800000 1700000 1600000 1500000 1400000 1300000 1200000 1100000 1000000 900000 800000 cpu0/cpufreq//scaling_available_governors:ondemand performance cpu0/cpufreq//scaling_cur_freq:800000 cpu0/cpufreq//scaling_driver:acpi-cpufreq cpu0/cpufreq//scaling_governor:ondemand cpu0/cpufreq//scaling_max_freq:2200000 cpu0/cpufreq//scaling_min_freq:800000 cpu0/cpufreq//scaling_setspeed:<unsupported> (seems be ok) CASE 3 Run in other consoles "while true; do echo -n; done": cpu0/cpufreq/ cpu0/cpufreq//affected_cpus:0 1 2 3 cpu0/cpufreq//bios_limit:2200000 cpu0/cpufreq//cpuinfo_cur_freq:2200000 cpu0/cpufreq//cpuinfo_max_freq:2200000 cpu0/cpufreq//cpuinfo_min_freq:800000 cpu0/cpufreq//cpuinfo_transition_latency:10000 cpu0/cpufreq//related_cpus:0 1 2 3 cpu0/cpufreq//scaling_available_frequencies:2200000 2000000 1900000 1800000 1700000 1600000 1500000 1400000 1300000 1200000 1100000 1000000 900000 800000 cpu0/cpufreq//scaling_available_governors:ondemand performance cpu0/cpufreq//scaling_cur_freq:2200000 cpu0/cpufreq//scaling_driver:acpi-cpufreq cpu0/cpufreq//scaling_governor:ondemand cpu0/cpufreq//scaling_max_freq:2200000 cpu0/cpufreq//scaling_min_freq:800000 cpu0/cpufreq//scaling_setspeed:<unsupported> (still seems be ok) CASE 4 Disconnect AC adapter (the same as in 'CASE 3') CASE 5 Suspend to ram and resume cpu0/cpufreq/ cpu0/cpufreq//affected_cpus:0 1 2 3 cpu0/cpufreq//bios_limit:2200000 cpu0/cpufreq//cpuinfo_cur_freq:800000 cpu0/cpufreq//cpuinfo_max_freq:2200000 cpu0/cpufreq//cpuinfo_min_freq:800000 cpu0/cpufreq//cpuinfo_transition_latency:10000 cpu0/cpufreq//related_cpus:0 1 2 3 cpu0/cpufreq//scaling_available_frequencies:2200000 2000000 1900000 1800000 1700000 1600000 1500000 1400000 1300000 1200000 1100000 1000000 900000 800000 cpu0/cpufreq//scaling_available_governors:ondemand performance cpu0/cpufreq//scaling_cur_freq:800000 cpu0/cpufreq//scaling_driver:acpi-cpufreq cpu0/cpufreq//scaling_governor:ondemand cpu0/cpufreq//scaling_max_freq:2200000 cpu0/cpufreq//scaling_min_freq:800000 cpu0/cpufreq//scaling_setspeed:<unsupported> First error: frequency changed from 2,2GHz (maximum) to 800MHz (minimum), despite the high CPU load. CASE 6 Power on AC adapter: cpu0/cpufreq/ cpu0/cpufreq//affected_cpus:0 1 2 3 cpu0/cpufreq//bios_limit:2200000 cpu0/cpufreq//cpuinfo_cur_freq:2200000 cpu0/cpufreq//cpuinfo_max_freq:2200000 cpu0/cpufreq//cpuinfo_min_freq:800000 cpu0/cpufreq//cpuinfo_transition_latency:10000 cpu0/cpufreq//related_cpus:0 1 2 3 cpu0/cpufreq//scaling_available_frequencies:2200000 2000000 1900000 1800000 1700000 1600000 1500000 1400000 1300000 1200000 1100000 1000000 900000 800000 cpu0/cpufreq//scaling_available_governors:ondemand performance cpu0/cpufreq//scaling_cur_freq:2200000 cpu0/cpufreq//scaling_driver:acpi-cpufreq cpu0/cpufreq//scaling_governor:ondemand cpu0/cpufreq//scaling_max_freq:2200000 cpu0/cpufreq//scaling_min_freq:800000 cpu0/cpufreq//scaling_setspeed:<unsupported> (now back to normal, until AC is disconnected) =============================================================================== Kernel 3.9.0-rc4 I do some changes: $ diff -uNr /boot/config-3.9.0-rc3 /boot/config-3.9.0-rc4 | grep -i CONFIG_X86_ CONFIG_X86_64=y -# CONFIG_X86_INTEL_PSTATE is not set -# CONFIG_X86_PCC_CPUFREQ is not set +CONFIG_X86_INTEL_PSTATE=y +CONFIG_X86_PCC_CPUFREQ=m CONFIG_X86_ACPI_CPUFREQ=m # CONFIG_X86_ACPI_CPUFREQ_CPB is not set # CONFIG_X86_POWERNOW_K8 is not set CASE 7 (normal boot) CPU: cpu0/cpufreq/ cpu0/cpufreq//affected_cpus:0 cpu0/cpufreq//cpuinfo_cur_freq:792000 cpu0/cpufreq//cpuinfo_max_freq:2200000 cpu0/cpufreq//cpuinfo_min_freq:800000 cpu0/cpufreq//cpuinfo_transition_latency:4294967295 cpu0/cpufreq//related_cpus:0 cpu0/cpufreq//scaling_available_governors:performance powersave cpu0/cpufreq//scaling_driver:intel_pstate cpu0/cpufreq//scaling_governor:powersave cpu0/cpufreq//scaling_max_freq:2200000 cpu0/cpufreq//scaling_min_freq:800000 cpu0/cpufreq//scaling_setspeed:<unsupported> (regardless of the cpu load, power, suspend) 'ondemand' governor is not available. Config, dmesg: http://mrutecki.pl/download/kernel/3.9.0-rc4/cpufreq/ Regards -- Maciej Rutecki http://www.mrutecki.pl -- 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
