On 09/17/2014 07:22 PM, Daniel Lezcano wrote: > On 09/17/2014 04:20 PM, Shilimkar, Santosh wrote: [...] >> Could you try a long run of this little program: >> >> https://git.linaro.org/power/pm-qa.git/blob/HEAD:/cpuidle/cpuidle_killer.c >> >> [Santosh] I am sure there will not be any issue with the long run test case here. >> Lets see if Nishant sees anything otherwise > > Ok. Make sure the cpu is effectively entering your C2 state with the > sleep duration in the test program. Test kernel: https://github.com/nmenon/linux-2.6-playground/commits/testing/tmlind-test-suspend-resume (I decided to merge in various send for pull branches from maintainers and apply cpuidle on top).. Controlled test run as follows on 4 different impacted platforms and 1 platform as legacy reference. What we are looking for is > cpu1_pwrdm (ON),OFF:0,RET:2677,INA:0,ON:2678,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 RET:2677 indicated CPU1 hit C2 > cpu0_pwrdm (ON),OFF:0,RET:2677,INA:0,ON:2678,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 RET:2677 indicated CPU0 hit C2 > mpu_pwrdm (ON),OFF:0,RET:2667,INA:0,ON:2668,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:2667,RET-MEMBANK2-OFF:0 RET:2667 indicates that CPU0 and CPU1 managed to achieve RET together, else by hardware constraints in place, MPU power domain will fail to transition. What I see in all cases below is that transitions do take place (C2 is successfully hit). Test #1: 120 seconds: CMD: set -x;uname -a;cat /sys/kernel/debug/pm_debug/count;sleep 1;./cpuidle_killer_120;sleep 1;cat /sys/kernel/debug/pm_debug/count;set +x OMAP4 Panda-ES: (2 a9) - not impacted as part of this patch - just base test vector http://fpaste.org/134547/14110454/ OMAP5 uEVM: (2 a15) http://fpaste.org/134546/10454181/ DRA74x: (2 a15) http://fpaste.org/134543/11045286/ DRA72: (2 a15) http://fpaste.org/134544/11045335/ AM572x(DRA74x variant): (2 A15) http://fpaste.org/134545/10453761/ Test #2: 1200 seconds: (http://fpaste.org/134564/47289141/) CMD: set -x;uname -a;cat /sys/kernel/debug/pm_debug/count;sleep 1;./cpuidle_killer_1200;sleep 1;cat /sys/kernel/debug/pm_debug/count;set +x OMAP4 Panda-ES: (2 a9) - not impacted as part of this patch - just base test vector http://fpaste.org/134563/41104728/ OMAP5 uEVM: (2 a15) http://fpaste.org/134562/47221141/ DRA74x EVM: (2 a15) http://fpaste.org/134559/11047098/ DRA72 EVM: (2 a15) http://fpaste.org/134560/11047151/ AM572x EVM: (2 A15) http://fpaste.org/134561/47189141/ -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
