RE: [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry

On Fri, Jan 8, 2021 at 11:52 AM Misono Tomohiro
[off-list ref] wrote:

quoted

This adds sysfs entry per CMG to show running barrier driver status
for debugging user application. The following entries will be created:

/sys/class/misc/fujitsu_hwb
 |- hwinfo ... number of CMG/BB/BW/pe_per_cmg on running system
 |- CMG0
     |- core_map      ... cpuid belonging to this CMG
     |- used_bb_bmap  ... bitmap of currently allocated BB
     |- used_bw_bmap  ... bitmap of currently allocated BW
     |- init_sync_bb0 ... current value of INIT_SYNC register 0
     |- init_sync_bb1 ... current value of INIT_SYNC register 1
     ...
 |- CMG1
  ...

If this is meant as a stable interface, it should be documented in
Documentation/ABI/

However, if it's purely for debugging and may not get maintained
forever, you might want to use debugfs instead.

As you guess this is only for debugging purpose, so I will try debugfs.

Thanks for review,
Tomohiro
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel