마이크로비젼 기술지원팀입니다.
아래와 같이 설정하여 테스트를 진행해 보시길 바랍니다.
# make menuconfig
System Type --->
Support dynamic CPU Hotplug --->
[ ] EXYNOS Dynamic Hotplug
CPU Power Management --->
CPU Frequency scaling --->
[ ] CPU idle PM support
[ ] CPU Frequency scaling
위와 같이 설정한 후에 컴파일하여 생성된 이미지를 write하여 확인을 해보시기 바랍니다.
테스트한 출력 메시지
/ # mpstat -P ALL 1
Linux 3.0.15 (microvision.co.kr) 01/01/00 _armv7l_ (4 CPU)
00:00:16 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
00:00:17 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:17 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:17 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:17 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:17 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:17 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
00:00:18 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:18 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:18 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:18 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:18 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:18 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
00:00:19 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:19 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:19 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:19 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:19 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:19 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
00:00:20 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:20 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:20 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:20 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:20 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:20 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
00:00:21 all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:21 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:21 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:21 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
00:00:21 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00