Android 开机的uart log解析

[feisonzl]

我在开机的uart log中看到如下log：
[ 9.223686].(1)[1:init]init: command r=0 ' chown root system /sys/module/lowmemorykiller/parameters/adj'

[ 9.225011].(1)[1:init]init: command r=0 ' chmod 0664 /sys/module/lowmemorykiller/parameters/adj'

[ 9.226246].(1)[1:init]init: command r=0 ' chown root system /sys/module/lowmemorykiller/parameters/minfree'

[ 9.227660].(1)[1:init]init: command r=0 ' chmod 0664 /sys/module/lowmemorykiller/parameters/minfree'

[ 9.229065].(1)[1:init]init: command r=-2 ' chown root system /sys/module/page_alloc/parameters/dump_order_threshold'

[ 9.230882].(1)[1:init]init: command r=-2 ' chmod 0664 /sys/module/page_alloc/parameters/dump_order_threshold'

[ 9.232401].(0)[1:init]init: command r=-2 ' chown root system /sys/module/page_alloc/parameters/log_order_threshold'

[ 9.233939].(0)[1:init]init: command r=-2 ' chmod 0664 /sys/module/page_alloc/parameters/log_order_threshold'

[ 9.235401].(0)[1:init]init: command r=-30 ' chown system system /system/lib/modules/gpiocontrol.ko'
这是在执行init.rc的过程，但是不明白command r=-2是什么意思，而且r的值也有不同，目前只能猜测0为执行通过的正常值，但是其他的值，目前还不知道，请大家讨论讨论。