We want to dump some hns driver-defined information that belongs to a
process to keep track of current memory usage. For example, there is
a ucontext-level(process-level) memory pool to store WQE which is
shared by a lot of QPs, we want to record and query which QPs are using
this pool and how much space each QP is using.
rdmatool don't have a ucontext-level resource tracking currently, is it
ok to achieve that through debugfs?
This may looks like:
$ echo 1 > <dbgfs_dir>/hns_roce/hns_0/<pid>/qp
QPN Total(kB) SQ(kB) SGE(kB) RQ(kB)
110 6400 256 2048 4096
118 6400 256 2048 0
Or should it be achieved in rdmatool?