[ofa-general] [PATCH] IB/iSER: Add module param to count alignment violations
Pete Wyckoff
pw at osc.edu
Wed Apr 30 07:08:25 PDT 2008
rdreier at cisco.com wrote on Mon, 28 Apr 2008 08:51 -0700:
> > Add read only module param to count alignment violations.
>
> I don't think a module parameter is the way to report statistics from
> the kernel. Can't you just add a device attribute or something? Or
> stick a file in debugfs?
This is definitely a worthwhile change though. By monitoring this
statistic we were able to get good insight to what our apps are
doing to cause these alignment violations.
I have a hacky patch that tries to export it via sysfs, but it
doesn't clean up properly. The iscsi transport class defines the
sysfs tree and doesn't give hooks to a particular device to
add/change those entries, which is why this approach came out rather
ugly. Hope Eli is willing to do this the right way; maybe debugfs
is the way to go.
-- Pete
More information about the general
mailing list