Jianxin Pan 715be69c3d
debug: improve ftrace_ramoops for io trace [2/2] ...
PD#SWPL-6028
Problem:
improve ftrace_ramoops to debug bus hang
Solution:
1. in uboot
setenv initargs $initargs ramoops_io_en=1 loglevel=3;save;reset
2. in linux command line:
cat /sys/module/kernel/parameters/ramoops_io_en
to check if success.
3. after watchdog reboot, get trace data with:
cat /sys/fs/pstore/ftrace-ramoops-0
Verify:
TL1 x301
Change-Id: If1a2582b40a3ded31eedef5355eb0b8a5bf495c3
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com >
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